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How to match subwoofers and amplifiers

Find the right amp for your sub or sub for your amp

Buck Pomerantz was born and raised in Philadelphia. His parents bought their first television set when he was born. He figured out how to run it by the time he was two. Besides athletics, his formative interests included electronics, amateur radio, music, and stage crew work. He got his BA in writing from Brown University. Then he joined a rock 'n roll band as their soundman and moved to Charlottesville, Virginia. After that venture failed, he spent time in Boston, New Orleans, and Berkeley. He worked in a music store in Austin manufacturing, installing, repairing, and operating sound systems for recording studios, clubs, and bands. He moved back to Charlottesville, ran a little recording studio and finally joined Crutchfield as a copywriter. He has 2 grown children and 3 grandchildren, but after a good nap he can still rock out.

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How to match subs and amps

In a Nutshell

A subwoofer has impedance (measured in ohms) which represents the "load" an amplifier will sense on its output. An amplifier will put out different amounts of power (watts RMS) based on the impedance load it "sees."

Getting the right sub for an amp, or the right amp for a sub, is like solving a puzzle where the amplifier's capabilities (X watts RMS into Y ohms) needs to match the subwoofer's specifications (Y ohms and can handle X watts RMS). Your goal is to get those two variables to match for both the amplifier and the subwoofer.

Full Story

The secret to great bass is making sure your subwoofers and amp are evenly matched and will properly work together. And this article will help you figure out how to do just that — match amplifiers and subwoofers. We cover the important basics of power-matching, impedance, and planning for the number of subs you want, and we approach the situation from both sides of the system:

  • Part A: You have the subs, which amp should you get?
  • Part B: You have the amp, which subs should you get?

Start with either part you want, but they're both worth a read.


Part A
You have the subs, which amp should you get?

The subs need to be the same
Multiple subs wired together must be the same coil type and impedance. If they’re not, the power won’t divide evenly between them, and some subs would probably be over-powered while others get under-powered. If you want to run different types of subs in a system, each type needs to have its own separate amp.

Step 1: How much power? Find out the “watts RMS” rating of the sub

Then, multiply the number of subs you have by the RMS rating of each, to get their total RMS rating. You want to make sure the amp you choose is capable of supplying from 75% to 150% of the sub system’s total RMS rating.

Step 2: What impedance? The results of combining coils and subs

Figure out the possible total impedance(s) that the subs can be wired together to form.
(SVC = single voice coil, 1 pair of terminals; DVC = dual voice coil, 2 pairs of terminals.)

  • 1 SVC 2-ohms can only have 2 ohms of impedance
  • 1 SVC 4-ohms can only have 4 ohms of impedance
  • 1 DVC 2-ohms can have 1 ohm or 4 ohms of impedance
  • 1 DVC 4-ohms can have 2 ohms or 8 ohms of impedance
  • 2 SVC 2-ohms can have 1 ohm or 4 ohms of impedance
  • 2 SVC 4-ohms can have 2 ohms or 8 ohms of impedance
  • 2 DVC 2-ohms can have 2 ohms or 8 ohms of impedance
  • 2 DVC 4-ohms can have 1 ohm or 4 ohms of impedance
  • 3 SVC 2-ohms can have 6 ohms of impedance
  • 3 SVC 4-ohms can have 1.3 ohms of impedance
  • 3 DVC 2-ohms can have 1.3 ohms or 3 ohms of impedance
  • 3 DVC 4-ohms can have 2.7 ohms or 6 ohms of impedance
  • 4 SVC 2-ohms can have 2 ohms or 8 ohms of impedance
  • 4 SVC 4-ohms can have 1 ohm or 4 ohms of impedance
  • 4 DVC 2-ohms can have 1 ohm or 4 ohms of impedance
  • 4 DVC 4-ohms can have 2 ohms or 8 ohms of impedance

 For more combinations of subs and their impedances, see Subwoofer Wiring Diagrams.

Step 3: Pick an amp that can do both — X watts at Y ohms

Look for an amplifier that can put out power within the RMS wattage range you’ve figured in Step 1, at an impedance load the subs can be wired to form, from Step 2.

Estimating amp power at the odd impedance values:

  • 8 ohms — figure on the amp putting out half the power it would at 4 ohms
  • 6 ohms — figure on the amp putting out three-quarters of the power it would at 4 ohms
  • 3 ohms — figure on the amp putting out the average of what it would at 2 ohms and at 4 ohms
  • 2.7 ohms — figure the same as for 3 ohms, and add a few watts
  • 1.3 ohms — use the 1-ohm spec and take away a few watts
Alpine Type R SWR-843D

Example:
You have two Alpine Type R SWR-8D4 8" subwoofers and you want the right amp for them.

They are DVC 4-ohm subs rated at 350 watts RMS each.

Two 350 watts RMS subs together need a total of 700 watts RMS, but an amp putting out from 525 to 1050 watts RMS will do. (75% of 700 is 525; 150% of 700 is 1050.)

Using the chart in Step 2, 2 DVC 4-ohm subs can be wired together to form a 1-ohm, a 4-ohm, or a 16-ohm load.

The last is too high a load to be practical, so you’ll look for an amp that can put out from 525 to 1050 watts RMS into either a 4-ohm load, or a 1-ohm impedance load:

  • 525-1050 watts RMS x 1 at 4 ohms, or
  • 525-1050 watts RMS x 1 at 1 ohm

Among Crutchfield’s selection of amplifiers you’ll find:

Any one of these high-quality amplifiers would work well with those subs. It doesn’t matter which impedance an amp plays through — 600 watts RMS through a 4-ohm load produces the same volume as 600 watts RMS through a 1-ohm load.  Notice that the Rockford Fosgate Power T1000-1bdCP can play that pair of subs at 700 watts RMS or 1,000 watts RMS, if you want it louder, just by wiring them together differently.

Rockford Fosgate T1000-1bdCP

Rockford Fosgate T1000-1bdCP subwoofer amplifier

The last amp listed above, the Rockford Fosgate Power P1000X2, is a 2-channel amp that happen to work with these two subs when bridged into 1-channel mode. But multi-channel amps are typically lower-powered than mono subwoofer amps, and usually can’t drive loads lower than 4 ohms when bridged.


Kicker 43CXA1200.1

Kicker CXA1200.1 subwoofer amplifier

Part B
You have the amp, which subs should you get?

Step 1: What can the amp do? Find the RMS ratings of the amp at different loads

Find the amp’s power, expressed in “watts RMS”, at 4 ohms, at 2 ohms, and, if it can, at 1 ohm. Pick the power you’d like to achieve. The load impedance (ohms) of that rating will be what you want your subs’ total impedance to be.

Step 2: How many subs do you want?

Divide the power you picked in Step 1 by the number of subs you want. This number is the target RMS rating for each of the subs you’ll choose.

  • Divide that target number by 1.5. This is the lowest RMS rating per sub that will work.
  • Divide that target number by 0.75 for the highest RMS rating per sub.

Step 3: What impedance does each sub need to be and how many voice coils?

Using the impedance you picked in Step 1 and the number of subs from Step 2, cross-reference the possible coil configurations that you can use: 

1-ohm 2-ohms 4-ohms
1 sub DVC 2-ohms SVC 2-ohms
DVC 4 ohms
SVC 4-ohms
DVC 2-ohms
2 subs SVC 2-ohms
DVC 4-ohms
SVC 4-ohms
DVC 2-ohms
SVC 2-ohms
DVC 4-ohms
3 subs (1.3 ohms)*
SVC 4-ohms
DVC 2-ohms
(3 or 2.7 ohms)*
DVC 2-ohms
DVC 4-ohms
(6 ohms)*
SVC 2-ohms
DVC 4-ohms
4 subs SVC 4-ohms
DVC 2-ohms
SVC 2-ohms
DVC 4 ohms
SVC 4-ohms
DVC 2-ohms
* Estimate amp power at the odd impedance values like in Part A, Step 3, above.

Step 4: Pick a sub that works for both — (SVC or DVC) X-ohms, Y watts RMS)

Look for subs that are rated within the wattage range you figured in Step 2, and are configured as you found in Step 3. This might sound confusing, so let's walk through an example and it'll make sense.

Memphis Audio 16-SRX500D.1

Example:
You have a Memphis Audio SRX500D.1 amplifier and you want it to drive two subwoofers

The amp is capable of 350 watts RMS x 1 at 4 ohms and 500 watts RMS x 1 at 2 ohms.

Let’s say you choose to maximize the amp’s potential and want the system to put out 500 watts RMS. This means your subs have to be wired to form a total impedance of 2 ohms.

Two subs on a 500 watts RMS amp will want about 250 watts RMS each.
250 divided by 1.5 is 167; 250 divided by 0.75 is 333. So you’ll look for subs each rated between 167 and 333 watts RMS.

Using the chart in Step 3, for two subwoofers, a final 2-ohm load can be achieved with either two SVC 4-ohm subs or two DVC 2-ohm subs.

So, you’ll look for two subs that are either SVC 4-ohms or DVC 2-ohms, rated between 167 and 333 watts RMS each:

  • 2 SVC 4-ohms, 167-333 watts RMS, or
  • 2 DVC 2-ohms, 167-333 watts RMS

Among Crutchfield’s selection of subwoofers you’ll find:

Kicker CompD 10"

Kicker CompD 10" component subwoofer

All these subwoofers will sound their best when amplified with the proper amount of power. Differences in size have more to do with tonal qualities and frequency response than with power performance. And optimizing performance is the point of matching subs and amps together.


Part C
If you have neither amp nor sub, and want help in deciding how to begin:

Check out our other article, All About Subwoofers.

Last updated July 18, 2016
  • Samy from Budapest

    Posted on 4/25/2015 4:35:40 PM

    i have recently bought a subwoofer 200 watt at 4 ohm , 19 cm . I have made by myself subwoofer box capable of adding at least 3 more subwoofers in it . My question is that is it possible to add other subwoofers at 2 ohm in case if i dont find 4 ohm . And if the total watt is around 800 watt , which amplifier is good ?

  • Buck Pomerantz from Crutchfield

    Posted on 4/27/2015 12:03:07 PM

    Samy, You should never connect subs of different impedances together to the same amplifier - the lower impedance subs will get more power than the higher impedance subs, resulting in unbalanced sound levels and potentially blown subs. If you do get four SVC 4-ohm subwoofers with the same 200-watt power rating, you can wire them together like this diagram. Look for a mono subwoofer amplifier that can put out from 600 to 1200 watts RMS at 4 ohms.

  • Robin

    Posted on 5/1/2015 10:17:50 PM

    I have 2 12" alpine 750 watts each subs. What size amp should I get for the most I can get out of the speakers and should I get a 2 channel or 1 channel and bridge them? Thank you

  • perry walters from kentucky

    Posted on 5/3/2015 7:45:25 PM

    Polk Audio db840DVC db Series 8" subwoofer with dual 4-ohm voice coils Im thinking of getting this sub and need a good priced amp for it and anything else as for wires and cross overs if needed ? your help on a decent set up for this sub would be great

  • Buck Pomerantz from Crutchfield

    Posted on 5/4/2015 9:57:24 AM

    Robin, Not knowing exactly what subwoofers you have (number of voice coils and impedance) make it impossible to give advice on how to wire them together. Also, I am not familiar with any Alpine subwoofer rated for 750 watts RMS, and suspect you've quoted a peak rating, which is useless for matching subs and amps together. There are no benefits in getting a 2-channel amp to drive a subwoofer system. Most 2-channel amps can't drive loads lower than 4 ohms when bridged, and don't have enough power to drive 2 subs. Mono, 1-channel amps are designed to work with a wider range of impedances, and have tone controls and filters specifically made to help reproduce bass.

  • Buck Pomerantz from Crutchfield

    Posted on 5/4/2015 9:58:00 AM

    Perry, I've forwarded your questions to Crutchfield's Sales Advisor Team, and a member will get in touch with you by email to offer suggestions and help you choose the right gear for you and your vehicle.

  • Gopinath from India

    Posted on 5/11/2015 12:38:03 PM

    9000watts pmpo equal to how many ohms

  • Buck Pomerantz from Crutchfield

    Posted on 5/11/2015 1:22:37 PM

    Gopinath, A watt is a measurement of an amplifier's output power; an ohm is a measure of a subwoofer's impedance; a number of one can't equal a number of the other - they're different things. They do have a mathematical relationship when the sub is hooked up to the amp. An amplifier's output power in watts will equal its output voltage squared then divided by the subwoofer's impedance in ohms. Also, you should never use peak ratings when matching amps and subs (PMPO stands for Peak Momentary Power Output, a worthless rating), always use RMS ratings.

  • Dylan

    Posted on 5/11/2015 2:07:56 PM

    I am looking at buying ONE sub which will best suite my amp. The amp I got is a Phoenix Gold Ti21600.5 (five channel amp) which can supply 500rms at 4 ohm or 800rms at 2 ohm to the sub line. The sub I am looking at buying is rated at 600rms and I have the option of taking it as a 2 ohm dual voice coil or a 4 ohm dual voice coil. Should I opt for the 2 ohm DVC or the 4 ohm DVC version of the sub?

  • Rajeev from UAE

    Posted on 5/12/2015 9:05:25 AM

    am planned to buy one sub woofer mono amplifier of kenwood 1000watts already i have the subwoofer box .my question is.if am putting the subwoofer and amplifer in my home how much ampere of power it need i mean 12 volt 10 amp or 20 amp..like that..please help me. my woofer is 4 ohm 10" 500watts

  • Buck Pomerantz from Crutchfield

    Posted on 5/12/2015 10:12:07 AM

    Dylan, If you want 500 watts of bass, get the DVC 2-ohm model and wire it like this diagram. If you want 800 watts of bass, get the DVC 4-ohm model and wire it like this. That sub should have no problems with that much power.

  • Buck Pomerantz from Crutchfield

    Posted on 5/12/2015 11:32:18 AM

    Rajeev, Car subwoofers are inappropriate in a home stereo system for a number of reasons. If you wanted to power your sub with just 500 watts RMS, the 12-volt power wires would need to be able to pass about 55.6 amperes of current. That large a power supply is rare and expensive. If a home theater subwoofer is not large enough for your planned system, try looking at a pro audio PA subwoofer. I don't know what pro audio equipment is available in your country, but an online search ought to bring up at least one pro audio dealership somewhere near you.

  • scott perez

    Posted on 5/13/2015 8:21:48 PM

    If I were to buy the Rockford Fosgate R500X1D Prime 1-Channel Class D Amplifier would I be able to connect it with 2 of these Pioneer TS-W304R 12-Inch Component Subwoofer with 1300 Watts Max Power?

  • Buck Pomerantz from Crutchfield

    Posted on 5/14/2015 9:47:14 AM

    Scott, That combination looks good to me. Wire them together like this diagram and rock on.

  • David from wallace

    Posted on 5/14/2015 10:15:54 PM

    I have 3 DVC 2 ohm 300 watt RMS each. I am looking to wire them to 3 ohm. Now here is my question...I am looking a amplifier to push these subs at its peak power. ( E8V3D2 Sundown Audio) Should i be looking for a 2 ohm stable amp with 600-1200 Watt RMS ? 1200 RMS being its peak?

  • Buck Pomerantz from Crutchfield

    Posted on 5/15/2015 10:04:46 AM

    David, Three DVC 2-ohm subwoofers can indeed present an amplifier with a 3-ohm load, wired like this diagram. The math for figuring what an amp will do with that impedance is a bit complicated and I won't go into it here. I will tell you that you should look for a mono subwoofer amp (2-ohm stable) capable of putting out from 1000 to 1500 watts RMS at 2 ohms. This should result in between 750 and 1125 watts RMS for the 3-ohm system - right on target. Avoid amps with regulated output power that is the same at all impedances - that won't work the same way.

  • Matt from St. Louis, MO

    Posted on 5/17/2015 6:31:06 PM

    I have a Rockford Fosgate Punch 400.4, 4 channel amp that's about 14 years old, and it was only used for less than a year. I was wanting to use it again, and was wanting to buy 2 subs. I know 4 channel amps are not ideal for subs, but it worked great for my last system years back. I guess bridging it to a 2 channel is what the installers did with it. On the amp, it says "50 X 4 Watts RMS into 4 Ohms with less than 0.05% THD from 20-20 KHz." It also states "100 X 4 Watts RMS into 2 Ohms with less than 0.10% THD from 20-20 KHz." What kind of subs would work with this amp? Or should I just not use this amp and buy a newer monoblock or 2 channel and wire that to 2 new subs? Thank you for any help!

  • damian from sydney

    Posted on 5/18/2015 1:34:22 AM

    Hi i have picked up some kicker CVR12 subs and they are wired at 1ohm so i have been told i have an RF P8002 amp can i use this amp they way they are wired if not how do i wire them? Yes old amp but never used.

  • Buck Pomerantz from Crutchfield

    Posted on 5/18/2015 10:02:05 AM

    Matt, If your amplifier is the old Punch 400.4, then here's a link to the Owner's Manual. To run two subs, you hook it up in 2-channel mono mode as shown on page 23. That way you can drive two subs with up to 200 watts each. Make sure the subs you get are each rated for between 150 and 300 watts RMS, and are either SVC 4-ohm or DVC 2-ohm models, so you can wire them to each bridged channel at 4 ohms.

  • Buck Pomerantz from Crutchfield

    Posted on 5/18/2015 10:26:42 AM

    Damian, Kicker CVR subwoofers come in DVC 2-ohm and DVC 4-ohm models. If by "some" subs you mean two, and they really are wired together to form a one-ohm load, then they're the DVC 4-ohm subs. For that amplifier, you need to re-wire them like this diagram.

  • Ben Marley

    Posted on 5/31/2015 11:41:35 PM

    I am looking at buying two 12" subwoofers that are 1150 RMS, 4 ohm impedance, and DVC. I would like an amp to match. I am using your walkthrough to try and figure out which amp to buy but I am just getting confused with the last step. So if you could tell me which type of amp I should get for my subs, it would be greatly appreciated.

  • Buck Pomerantz from Crutchfield

    Posted on 6/1/2015 11:01:15 AM

    Ben, Do you mean you want to run two DVC 4-ohm subs each rated for 1150 watts RMS, 2300 together? Then you'd look for a mono subwoofer amplifier that can put out between 1800 and 3500 watts RMS at 1 ohm or at 4 ohms.

  • Tom from Chicago

    Posted on 6/4/2015 2:06:13 PM

    In the example, with the Kenwood Excelon X500-1 amplifier "Two subs on a 500 watts RMS amp will want about 250 watts RMS each. 250 divided by 1.5 is 167; 250 divided by 0.75 is 333. So you'll look for subs each rated between 167 and 333 watts RMS." Why are you dividing by 150% and 75%. It should be a multiplication, resulting in 250*.75=187.5 250*1.5=375

  • Buck Pomerantz from Crutchfield

    Posted on 6/5/2015 2:34:59 PM

    Tom, When you try to find an amplifier to match known subwoofers, you multiply the sub's rating by 150% and 75% to get the power range of the amp needed. When you do the inverse, try to find matching subs to a known amplifier, you must also invert the mathematical operation. Using your math, you'll find that two 375-watt rated subs would hardly work with a 500-watt amplifier, which would only supply 67% of the subs' power rating.

  • Greg from phoenix, az

    Posted on 6/5/2015 8:51:19 PM

    I have a kicker amp with a 600 watt max and a 300 watt rms @ 2 ohms. I have one cerwin vega 8'' sub 250 watt rms dual voice coil with 2 ohms. Would my amp be powerful enough to power 2 of those subs?

  • Richard from CA

    Posted on 6/7/2015 4:46:30 PM

    I don't see why you would bother to bridge a two channel amp to drive a dual voice coil speaker. You would simply be driving the impedance of the individual voice coils by each channel of the amp. Somebody needs to review dual voice coil technology.

  • Buck Pomerantz from Crutchfield

    Posted on 6/8/2015 1:03:13 PM

    Greg, The short answer is no, your amp doesn't put out enough power for two of those subwoofers. In fact, it barely has enough power for one.

  • Buck Pomerantz from Crutchfield

    Posted on 6/8/2015 1:03:45 PM

    Richard, You are correct, Sir. DVC technology is difficult and confusing to understand. It was put in place to expand the wiring options for subwoofer systems, but made the actual wiring and impedance-matching more of a challenge.

  • Greg from phoenix, az

    Posted on 6/17/2015 2:26:49 PM

    I have one cerwin vega 8'' sub 500 watt, 250 watt rms dual voice coil with 2 ohms. I was looking at a 1200 watt cadence monoblock amp, 600 watt at 2ohms. Will that amplifier have too much power for my sub? If so how much power should I look for?

  • Buck Pomerantz from Crutchfield

    Posted on 6/17/2015 4:08:45 PM

    Greg, If that amplifier is the Cadence DAKOTA then it can put out 400 watts RMS to your 250-watt RMS rated sub, which should be just fine. Wire them together this way.

  • Ben N from United States

    Posted on 6/21/2015 9:27:06 AM

    Hello, I have two alpine 10's 4 ohms each, 250w each. Can I bridge it with an Autotek ATA1000.4 ? It says the max power is 500x2 bridged.

  • Buck Pomerantz from Crutchfield

    Posted on 6/22/2015 9:34:36 AM

    Ben, You don't bridge subwoofers, you bridge amplifier channels together. But yes, you can connect your gear together like this diagram. Don't expect 500 watts of power for each sub however. Those specs are "Max Power" ratings, which are exaggerated, misleading, and only used by manufactures for advertising.

  • Jake brown

    Posted on 6/23/2015 3:42:05 AM

    I just bought 2 twelve inch type s alpines. How big of watt would I need for the amp and the cords?

  • Buck Pomerantz from Crutchfield

    Posted on 6/23/2015 12:33:45 PM

    Jake, Alpine Type S subs come in two models: DVC 4-ohm and DVC 2-ohm. If yours are the DVC 4-ohm subs, then you should look for an amp that can put out between 750 and 1500 watts RMS at 1 ohm or 4 ohms. If you have the DVC 2-ohm subs, then you should look for an amp that can put out between 750 and 1500 watts RMS at 2 ohms. The size power and ground cables you'll need depend on which specific amplifier you choose and will be specified in the amplifier's owner's manual and specs.

  • Doyle

    Posted on 6/23/2015 9:52:23 PM

    I am thinking about getting two Memphis Power Reference 12" 4 OHM subwoofers (Part Number: 15-PRX12D4) and I'm not sure if i should get a Memphis Power Reference 1000 watts rms mono channel amp or a mono channel 750 watt amp (Part Number: 16-SRX1.750D). Which amp would work the best? And how does peak power rate when buying an amplifier?

  • Tom from California

    Posted on 6/23/2015 11:48:43 PM

    I have one dvc sub @ 4ohms and am looking for a monoblock amplifier. Should I look at the rms rated at 4 ohms on the amp or at 2 ohms?

  • Anthony from Louisiana

    Posted on 6/24/2015 4:18:42 AM

    I have 2 CompVR CVR102 2ohm DVC subs with 400rms each, Pioneer 4-way 6.5 door speakers front and back, what size or how many amps would I need?

  • Buck Pomerantz from Crutchfield

    Posted on 6/24/2015 10:24:54 AM

    Doyle, Both those amps will send the same amount of power, 400 watts RMS, to those two subs wired together like this. "Peak," "Max," and "Dynamic" ratings are exaggerated, misleading, and only used by manufactures for advertising their gear as being louder than the next guy's. Only use RMS specs.

  • Buck Pomerantz from Crutchfield

    Posted on 6/24/2015 10:34:38 AM

    Tom, You'll get the most bang for your buck spec-ing your amplifier for a 2-ohm load.

  • Buck Pomerantz from Crutchfield

    Posted on 6/24/2015 11:38:44 AM

    Anthony, For your subs, look for a mono subwoofer amplifier that can put out between 600 and 1200 watts RMS into a 2-ohm load. As for your full-range speakers, look for a 4-channel amp that can put out 75 to 100 watts RMS per channel at 4 ohms. Just give our advisors a call at the number on top of this page for help choosing the right amplifiers for your system. Car amplifiers happen to be on sale now at Crutchfield.

  • xxxtarheelxxx from north carolina

    Posted on 6/25/2015 7:52:59 PM

    I have 2 Infinity REFERENCE REF1262W 2400W 12" Dual 4 Ohm Subwoofers, what size amp do I need. Thx

  • Buck Pomerantz from Crutchfield

    Posted on 6/26/2015 4:40:45 PM

    Xxx, Look for an amp that can put out between 450 and 900 watts RMS at either 4 ohms or one ohm.

  • Justin rar from Wisconsin

    Posted on 6/27/2015 2:37:04 AM

    I have 1 diamond audio idk what the model is but its a 12 in at 500w rated power dvc running at 4ohms impedance is it safe to hook it up in any way to a Dual xpr520 400w bridgable 2channel amp i currently am running it with the hz all the way down, on low pass and gain all the way up when i get done with a 45 min drive its pretty toasty but doesnt go into protect mode

  • Buck Pomerantz from Crutchfield

    Posted on 6/29/2015 2:09:37 PM

    Justin, That amplifier's specs say that it can put out 150 watts RMS when bridged to a 4-ohm load. Not knowing exactly which sub you have makes it impossible for me to give wiring advice. I can tell you that you need to set your amp's low-pass filter and gain correctly. Check out this article for help doing that.

  • Jason

    Posted on 7/5/2015 11:30:34 PM

    If I were to buy a Pioneer GM-D8601 1600W Class D Digital Series Monoblock Amp, would i be able to connect it with a kenwood KFC-W3514DVC?

  • Bobby from St. John's, NL CAN

    Posted on 7/7/2015 3:53:52 AM

    I have an alpine pdx v9 5 channel amp, the sub channel is rated for 500 watts RMS. I am looking at mounting two 10" alpine SWT 10S2, rated at 350 watts RMS. this is a 2 ohm sub. Will my amp be good for these subs? It is also available in a 4 ohm option, should I look at that over a 2 ohm option? Or should I look at different subs altogether? Thanks

  • Buck Pomerantz from Crutchfield

    Posted on 7/7/2015 12:15:27 PM

    Jason, Sure can. Connect them like this.

  • Buck Pomerantz from Crutchfield

    Posted on 7/8/2015 10:04:58 AM

    Bobby, The subwoofer channel of the Alpine PDX-V9 will put out 500 watts whether to a 2-ohm or a 4-ohm load, so it really doesn't matter which of those subs you get. If you get the 2-ohm models, wire them together like this. If you get the 4-ohm models, wire them like this.

  • Jarrod

    Posted on 7/8/2015 3:20:58 PM

    I have the MTX TS82 8" full range truck boxes I bought from a friend. Your website sold them at one time and shows they have 100 watt RMS, but I don't know the rest to know how powerful of an amp to purchase. What do I do?

  • Edgar from Texas

    Posted on 7/8/2015 3:50:30 PM

    I have 2 Kicker 07CVR104 (10" 4 ohm) DVC and a Memphis PR 1.1000 (class D mono). Will my amp be appropriate to run the subs or is it being under/over used?

  • Buck Pomerantz from Crutchfield

    Posted on 7/8/2015 4:48:30 PM

    Jarrod, Look for a 2-channel amplifier that can put out between 75 and 150 watts RMS at 4 ohms.

  • Buck Pomerantz from Crutchfield

    Posted on 7/8/2015 4:56:29 PM

    Edgar, Wire them together this way and rock on.

  • Eric from Pennsylvania

    Posted on 7/9/2015 1:54:35 AM

    I got done installing two 12in Rockford Fosgate Series One subwoofers to a Pioneer GM-A5602, but unfortunately the subs were old and couldent handle the newer technology and blew out... so im now looking to but two new subs. The power rating for my amp is [150x2@4ohms / 225x2@2ohms] What power rating subwoofer should i be looking at?

  • Buck Pomerantz from Crutchfield

    Posted on 7/9/2015 10:43:43 AM

    Eric, You have a lot of options, but you'll get the best bang out of that amp if you get subs rated for between 150 and 300 watts RMS. They can be either DVC 4-ohm subs, or SVC 2-ohm subs.

  • Erick from Meriden, ct

    Posted on 7/9/2015 3:37:12 PM

    I have purchased Kicker DCompS12 Dual 12" Single-Voice-Coil 2-Ohm Subwoofers with Enclosure and I have them wired to a Boss Audio R1100M - 1100 Watt, Monoblock, Class A/B, MOSFET Amplifier With Remote Subwoofer Level Control. I don't know if it's because I'm used to a sealed box enclosure but the subs do not sound too great. Should I buy a different amp? Or do you have any suggestions on a sub, enclosure, amp combo to install in a 2012 Toyota Sienna SE.

  • mike from washington

    Posted on 7/10/2015 12:36:24 PM

    I have (2) SVC 12" subwoofer 875W max power 175W continuous power if the amp I want has these specs will it be good enough for lots of bass at high volume Maximum power output: 1200 watts Max power @ 2 Ohms: 600 Watts x 2 RMS power @ 4 Ohms: 200 Watts x 2 Frequency response: 9 to 50,000 Hz 200W RMS output

  • Buck Pomerantz from Crutchfield

    Posted on 7/10/2015 2:19:35 PM

    Erick, That amplifier will put out about 250 to 300 watts RMS to that subwoofer, which should be fine. Perhaps your system just needs a little tune-up. Check out this article for help with that.

  • Buck Pomerantz from Crutchfield

    Posted on 7/10/2015 3:28:24 PM

    Mike, First of all, you need to ignore max ratings, they are meaningless. Secondly, you didn't say what impedance your subs are, so it'll be a challenge to figure out which amp will be best for them. If they're SVC 4-ohm subs, look for an amp that can put out between 300 and 500 watts RMS at 2 ohms. If they're SVC 2-ohm subs, 300 to 500 watts RMS at 4 ohms.

  • Derek Sedgwick from Canada

    Posted on 7/13/2015 11:52:14 PM

    I have two 12" subwoofers (MTX Terminator dual 12") that has a peak power of 1200 watts. What amp wattage should I use to power all 1200 watts (peak power) of this dual subwoofer box?

  • Buck Pomerantz from Crutchfield

    Posted on 7/14/2015 1:21:46 PM

    Derek, If you're referring to the MTX TNP212D2 Dual Loaded Subwoofer Enclosure then you should first know that it's rated for 400 watts RMS. (You should never use peak specs.) In order to drive this sub, look for an amplifier that can put out between 300 and 600 watts RMS at 2 ohms.

  • Stacey from Miami

    Posted on 7/14/2015 4:01:47 PM

    I have a 900w pioneer amp pushing a 1300 watt pioneer sub. I've already fried 2 of the same subs. Do I need a higher watt on the sub ??

  • Buck Pomerantz from Crutchfield

    Posted on 7/15/2015 10:43:21 AM

    Stacey, I suspect that the specs you quote are peak ratings that have no real use in matching your amp and subs together safely. But not knowing exactly what amplifier or subwoofers you have make it impossible to give advice on how to wire them together. If you want a question answered about your system, you must identify your equipment by brand names and model numbers.

  • Thegan from Durban

    Posted on 7/16/2015 5:04:10 PM

    I have a 240W 12" jebson. Together with a 1900W 4ch starsound amp. Will this work. I'm looking for clear sound with good bass. Kindly advise. Thanks.

  • Buck Pomerantz from Crutchfield

    Posted on 7/17/2015 10:35:58 AM

    Thegan, You might be able to bridge a couple channels of your 4-channel amplifier together to drive your subwoofer, if it's 4-ohms, but generally speaking, it's better to use a mono subwoofer amp to run a subwoofer.

  • Anthony Walker

    Posted on 7/17/2015 3:41:26 PM

    whats the best amp to push 3 subs that are DVC 4ohm and 800 watts rms

  • Eriz

    Posted on 7/19/2015 1:08:19 AM

    Hey guys I bought 2 300 watt 12 inch kicker subwoofers and a 1100 watt BOSS amp riot edition how would the sound be like or what would it be like? Would there be a diffrence if the amp is more powerful?

  • Buck Pomerantz from Crutchfield

    Posted on 7/19/2015 11:10:04 AM

    Anthony, I recommend a Kicker 40KX2400.1 2400-watt amplifier for your setup. Wire it together like this.

  • Ricardo Walden from Dublin

    Posted on 7/20/2015 6:29:13 AM

    I recently brought a pioneer AVHX5700BHS h/u and a pair of alpine srp 68 and aAlpine KTP-445A Power Pack along with a alpine Mrv f300 amp with some Alpine SPR-10TW Type-R 1" Silk Dome Tweeters. Will both of my amps push the speakers and what should I expect as far as the system sounding awesome

  • Buck Pomerantz from Crutchfield

    Posted on 7/20/2015 9:00:44 AM

    Eriz, The Boss Audio R1100M amp will put out close to 400 watts RMS into 4 ohms, which should be enough power to run two 300 watts RMS subs. Of course, they will sound better with a more powerful amp, all subs do.

  • Nelson from cerritos

    Posted on 7/20/2015 9:31:30 PM

    hello I have a kicker zx750.1 and 3 kicker CVX DVC 4ohm rated at 750w rms 1500max, I want to run them all at 2ohm. is that a good idea and will the amp be able to power them without any problems. if not what do you suggest I should do

  • Buck Pomerantz from Crutchfield

    Posted on 7/21/2015 10:45:36 AM

    Ricardo, I'm not sure what you want to accomplish with two full-range 2- way coaxial speakers plus two tweeters in a system, but you can certainly run them with those amps. As to whether it'll sound awesome or not will be up to you. I'd expect it to sound a bit heavy on the high frequencies, but you may like it like that.

  • Buck Pomerantz from Crutchfield

    Posted on 7/21/2015 12:45:37 PM

    Nelson, One of those subwoofers wired to that amplifier like this would perfectly match the 750-watt amp with the 750-watt sub. You could wire three of those subs wired together to that amp like this, but then the amp would only be able to put out about 500 watts and those would be divided between the three subs. In order to maximize the potential of those subs you'd need a much more powerful amp, like the Kicker 40KX2400.1 for instance.

  • malaquiaz Rodriguez from san diego

    Posted on 7/22/2015 4:04:22 PM

    I have a rockford fosgate 700s amp can i run two rockford fosgate 8in p2s2 or p2d4 on it.

  • Jake from Redding

    Posted on 7/23/2015 3:17:25 AM

    I need help with a configuration I am wanting to do here soon: I have a 300 watt peak, 150RMS(approx) DVC subwoofer. I would like to get the alpine MRV-F300 4 channel amp (50 watts rms x4 @ 4ohms, 75 watts rmsx4 @2 ohms). it is bridgeable in the rear channel for a 2.1 channel (dual with sub) setup. What ohms speakers do I need, and do I need to set up my sub for series or parallel? Will this work? Please help! Thanks!

  • Buck Pomerantz from Crutchfield

    Posted on 7/23/2015 10:24:43 AM

    Malaquiaz, I don't know what a Rockford Fosgate P2S2 is - Googling it comes up empty. However, that amplifier will power two P2D4-8s just fine, wired together like this.

  • Buck Pomerantz from Crutchfield

    Posted on 7/23/2015 1:02:45 PM

    Jake, That amplifier should work fine with your speakers and sub. Figure 12 in the owner's manual shows how to hook it all up, with a speaker connected to channel 1 and one to channel 2 and a subwoofer connected to channels 3 and 4 bridged together. You'll need to wire the sub like this.

  • Andrew

    Posted on 7/25/2015 4:23:34 PM

    I have 4 15 inch subwoofers American bass XO 1000 watts max peak. 500 watt RMS I have connected to two Jensen power 760 amplifiers bridged my amps keep overheating and going into protection mode why is that?

  • Buck Pomerantz from Crutchfield

    Posted on 7/27/2015 8:25:58 AM

    Andrew, If your subs are Bass XO1544s, the reason your amplifiers are going into protect mode is that you probably have each sub wired as a 2-ohm load and your amps are only stable down to 4 ohms when bridged. The only way to wire your equipment together safely is like this. Unfortunately you won't get much bass out of it, seeing as each 500-watt sub will only be getting about 80 watts RMS.

  • Ryan Jenkins from fort sill

    Posted on 7/28/2015 12:06:59 PM

    I have a Powerbass 400.1 watt amp with 2 powerbass 12s rms 550 watts. I am looking to upgrade and have decided to go with 2 soundqubed hdc3 12s rms at 1500 watts a piece i believe. My concern is is the subs going to be to much power for my amp and eventually blow my amp up ? Some buddies of mine said i will need a new alternator or an extra battery along with a new amp to power subs like those. I already have a Cap but im still new at this and just need some advice.

  • Buck Pomerantz from Crutchfield

    Posted on 7/28/2015 3:46:40 PM

    Ryan, Trying to run two 1500-watt subs with a 400-watt amp won't blow the amp, but wiring them together incorrectly might. Seeing as SoundQubed HDC 12" subs come in DVC 1-ohm and DVC 2-ohm models it is crucial that you know which model you have in order to wire them safely to an amplifier. That 400-watt amplifier shouldn't stress the electrical system of whatever vehicle you have. But if you do put in a stronger amp and then your vehicle's lights dim when the music plays, then you might need to upgrade your electrical system.

  • Jason from Totowa

    Posted on 7/29/2015 11:14:00 AM

    I have a Rockford Fosgate Punch 400 x 4 Amp (200w x 2 @ 4 Ohms Bridged) and a JL Audio 10TW3-D4 (200-400w Dual 4 Ohm). Can I use this amp to power this sub? If so, how should I wire it? I'd like to Bridge the amp and run two channels, one to each VC. Concerned about the dvc ohm rating. Or should I get a new amp?

  • Buck Pomerantz from Crutchfield

    Posted on 7/29/2015 4:14:16 PM

    Jason, It's not the best of practices, but your scheme will work. Wire each voice coil to a pair of bridged amp channels. Use this diagram as a general guide, but pretend that instead of two subs, they're two voice coils on one subwoofer. That sub can easily handle the amount of power that amp puts out. The tricky part is that each channel must send the identical signal to its coil or the discrepancies will create distortion and may even damage the sub. You solve this issue by using a Y-cord to send the same signal to each amp channel.

  • CJ Melo from Whitakers

    Posted on 7/30/2015 4:39:12 PM

    My question: I have a Autotek 1050.2 series and I had MTX Terminator subs. The amp RMS is 250X1 channel 500X2 channel and subs are 4ohms 200 a sub. And I also have a single battery running to my system. So im wondering if I should take the battery off of it or buy better subs. Need suggestions

  • Buck Pomerantz from Crutchfield

    Posted on 7/31/2015 10:50:06 AM

    CJ, You didn't say how many subs you have, but I'm going to guess two. The best you can do with that gear is to wire it all together like this diagram. At a total potential output of 500 watts RMS, I see no need for a second battery in your system.

  • alex from tucson

    Posted on 8/4/2015 1:08:33 PM

    Hi....i have this 2 Kicker 10CVR102 CompVR 10" subwoofer with dual 2-ohm voice coil and i have the amp hifonics BRX2016.1D 2000 whatts super class d.....how i should wire the subs to conected to the amp and get all the max power? Thank you

  • John from Milwaukee

    Posted on 8/4/2015 3:45:34 PM

    I have an older MTX Thunder 5601 amp and I am looking to buy a new sub, I am looking at the RF T0D412 my amp says its rated 600x1 watts, will this amp work well with the sub?

  • Buck Pomerantz from Crutchfield

    Posted on 8/5/2015 10:44:06 AM

    Alex, It might not be such a good idea to run those subs with that amp - at the 2 ohms they can get wired at, each 400-watt rated sub could get up to 700 watts RMS, which is enough to blow it apart. You could get it to work successfully if you set the amp's gain down low enough so that it won't put out a dangerous level of power.

  • Buck Pomerantz from Crutchfield

    Posted on 8/5/2015 10:54:14 AM

    John, It sure will - set the sub's impedance to 2 ohms and rock on.

  • donnell from baltimore

    Posted on 8/5/2015 7:35:54 PM

    I have a kicker 2ohm 400w sub and a jvc 2ohm 400w amp. Do I need multimeter to adjust the gains ?

  • Buck Pomerantz from Crutchfield

    Posted on 8/6/2015 3:27:55 PM

    Donnell, Many people use a multimeter to set their amplifier gains, but it's not absolutely necessary. Setting gain using a AC volt meter to attain the RMS voltage for a targeted wattage depends on the meter's accuracy at the frequency played. And setting by number doesn't tell you if the signal's clipped or not. Check out this article, where I discuss a few ways to set amplifier gain properly.

  • eric from sheboygan

    Posted on 8/7/2015 8:23:11 PM

    I got 2 12 inch kickers 300 watts 4 ohm each and a 600 watt amp is that enough for it?

  • Buck Pomerantz from Crutchfield

    Posted on 8/10/2015 10:49:53 AM

    Eric, If both of those wattage ratings are RMS ratings, then yes, the amp can power both subs.

  • Joel from Ottawa

    Posted on 8/11/2015 12:01:18 AM

    reading all this confuses me a little, I have two amplifiers than can do 1ohm and want to connect a dual 4ohm subwoofer, would I be better with a different dual ohm subwoofer

  • Buck Pomerantz from Crutchfield

    Posted on 8/11/2015 12:35:08 PM

    Joel, Part of the complexity of matching subs and amps is that not only do you need to match sub impedance with amp capability, but you have to consider both of their RMS power ratings as well. Not knowing exactly what amplifiers or subwoofer you have make it impossible to give advice on how to wire them together. If you want a question answered about your system, you must identify your equipment by brand names and model numbers.

  • Viraat from New Delhi

    Posted on 8/13/2015 3:47:24 AM

    Hi Buck, Thanks for the great article. I have a just purchased a Hertz DS 30.3 Subwoofer which will be delivered to me this week. I got it for a steal, which is why I started my build with the subwoofer. It has a continuous program rating of 250 watts, and a peak of 500 W. Is the Blaupunkt EMA 455 a suitable amplifier (4 channel, 55 RMS)? It is available for under 70 USD here. I am looking at a 4 channel amp with a bridge so that I can power my front components (Blaupunkts, OE of the Skoda Octavia Mk1) through the amp as well. In the rear, I have a set of 4.25 inch coaxials (Stock location, Hertz, don't know the model) which I plan on running through the headunit directly. Which other amplifiers should I consider? Does the set-up seem okay? What kind of wiring do I have to do for this? These seem to be very naive or amateurish questions, but this is my first proper car audio system! Please help!

  • Buck Pomerantz from Crutchfield

    Posted on 8/13/2015 1:54:09 PM

    Viraat, Many people use a 4-channel amp the way you describe: front channels running front speakers and the rear channels bridged to run a subwoofer. The owner's manual for your new amplifier will include wiring diagrams to help you hook it up.

  • Robby Stewart from United States

    Posted on 8/13/2015 8:53:23 PM

    I am about to purchase 2 Kenwood Excelon KFC-XW1200F subwoofers. What amp would you recommend to push them both.

  • Damien Holley from appleton wi

    Posted on 8/15/2015 4:17:15 AM

    I have a pair of jl audio 12w3v3-2 what's size amp do u recommend I think the rims is 100-500 and the peak power is 1000... Plz help

  • Mark from Guthrie, OK

    Posted on 8/15/2015 11:37:18 AM

    will this combination work? I am keeping the stock radio(silverado crew cab 2008 LS without BOSE) and adding a PAC AOEM-GM1416 to it for the amp, I am thinking of going with a KX8005 amp, 2 kicker C12D4 subs and a kicker KQ5 Equalizer. I did a lot of research and I need a second opinion before I sink $1000 dollars into this my vehicle currently has 4 kicker CS67 door speakers I wanted to change the pillar tweeters and go with Kickers but I am not sure which ones will fit and still give it that decieving stock look which I like.

  • John

    Posted on 8/15/2015 8:49:39 PM

    I have an MRP-M500 alpine class D mono block 500watts RMS. I just blew my current 12 inch woofer, it was pretty old, and am looking for advice on a new one. I was thinking of the alpine SWD-12D2 type R 12" with duel 2 ohm voice coils. Would this be ok? I am pretty new at this stuff.

  • Kendall Davis

    Posted on 8/16/2015 7:37:33 PM

    So i have 2 pioneer TS-TRX60 subs, they each are 150 watts with a 4 ohm impedence each. What kind of amp do i need to power them both? (How many amps, channels, etc.)

  • Buck Pomerantz from Crutchfield

    Posted on 8/17/2015 11:00:19 AM

    Mark, I don't know anything about that interface harness, but judging by its customer reviews it ought to work fine with your factory receiver, that equalizer and amp. I do see that you chose two 200 watts RMS rated DVC 4-ohm subs. Seeing as they can only get wired together to form a 16-, a 4-, or a 1-ohm load, you won't be getting the amp's full subwoofer output, because the amp can't do 1-ohm and will only be able to put out 200 watts RMS at 4 ohms. You'd do better with two DVC 2-ohm subs wired like this.

  • Buck Pomerantz from Crutchfield

    Posted on 8/17/2015 11:54:51 AM

    Kendall, Pioneer TS-TRX60s are full-range speakers, not subs, and they have a 50 watts RMS rating, so any 2-channel amp that can put out around 50 watts RMS a channel will work fine for your pair.

  • Robert from Philo

    Posted on 8/20/2015 4:31:30 AM

    I have a pair of Pyle Audio 600watt 4 ohm subwoofers I am going to be building a box for and wanted some advice on what size amp to use for best sound.

  • marc from brisbane

    Posted on 8/20/2015 6:27:01 AM

    I have 2 Earthquake TREMOR-X124 12" 400rms 4ohm Subwoofers just wondering what amp would u run behind them I was thinking that the Rockford Fosgate Power T1000-1bdCP would do the job but I would like to stick with an earthquake amp anu suggestions ? thanks

  • Buck Pomerantz from Crutchfield

    Posted on 8/20/2015 10:26:33 AM

    Robert, Pyle Audio makes two kinds of 600-watt 4 ohm subs: dual voice coil (DVC) and single voice coil (SVC). If yours are the DCV 4-ohm versions, then you'd look for a mono subwoofer amp that can put out between 800 and 1500 watts RMS at 1 ohm or 4 ohms. If you have the SVC versions, then the amp should be able to put out 800 to 1500 watts RMS at 2 ohms.

  • Buck Pomerantz from Crutchfield

    Posted on 8/20/2015 10:38:30 AM

    Marc, I'm not familiar with that brand of sub and amp, nor what's available Down Under, but that Rockford Fosgate amp is a great amplifier and would provide those subs with enough power to sound great too.

  • michael from nauvoo, al

    Posted on 8/21/2015 12:16:25 AM

    I have a power acustiik 6000w amp 1900 @4 2500@2 3300@1 Was wondering if a pair of mofo 154x would be appropriate for this amp. Of if I should get a pair of 152x instead.

  • Buck Pomerantz from Crutchfield

    Posted on 8/21/2015 1:23:04 PM

    Michael, Either model will work, but you'll get more bang for your buck with the 154X DVC 4-ohm subs wired together like this.

  • William from Phelan, ca

    Posted on 8/22/2015 4:21:07 PM

    I have a semi technical question. I'm looking for recommendations for a 4 channel amplifier to power 4 4x6 speakers and a subwoofer. Thank you in advance

  • John dolencic from New Boston

    Posted on 8/24/2015 10:19:09 PM

    I have 2 12" Polk 4 ohm sub woofers what would be a good amp

  • jarrett bourgeois from Gulfport

    Posted on 8/24/2015 10:44:09 PM

    I have 2 10" kicker rw10sq rated at 400RMS EACH and 800 max EACH they are dvc 2 ohm stable subs in a ported box I have a price range 200-250 and I want them to sound as best as possible what amp should I get

  • jarrett bourgeois from Gulfport

    Posted on 8/24/2015 10:58:33 PM

    I was looking at the rockford fosgate prime series class d but I don't know weather to get the 1200.1 the 750.1 or 2 500.1 one for each sub

  • Brandyn from Durban

    Posted on 8/26/2015 3:19:49 PM

    Hey Buck. I've got a 12" DVC 4ohm sub that I want to buy. Its advertised as 650x2 RMS with 5000W max output. Will a 4 channel 6000W with RMS of 80x4ohm be suitable?

  • Buck Pomerantz from Crutchfield

    Posted on 8/26/2015 4:39:28 PM

    Brandyn, If you have a DVC 4-ohm sub rated for 1300 watts RMS, a 4-channel amp capable of putting out 80 watts a channel won't do it much good. For that sub, a mono, 1-channel subwoofer amplifier that can put out between 1000 and 2000 watts RMS at 2 ohms will work much better.

  • Beez from Grand Rapids, MI

    Posted on 8/27/2015 4:22:50 PM

    This was a gigantic help! So much wisdom in this article. Thank you for the examples--those really drove it home for me!

  • Joel from Yakima

    Posted on 8/28/2015 6:31:35 AM

    I have two 12" JL audio W0v3 subs. They are single voice coil rated at 300 RMS and 600 watt max. Your column was very helpful as I now understand why my 900 watt max Pioneer amp runs burning hot from the time I turn on my system and shuts off when I turn up my music too loud or a deep bass tone hits. I figured 900 watts would be enough for the subs but understanding how Amps and ohms work I know I need a bigger amp, a lot bigger. The two subs came together in a factory build JL Audio box. Can you suggest a new amp for me? I need to be able to enjoy my music for longer periods of time, as well as be able to knock my neighbors paintings off the walls from time to time too. Thank you.

  • Buck Pomerantz from Crutchfield

    Posted on 8/28/2015 10:51:53 AM

    Joel, I've forwarded your question to Crutchfield's Sales Advisor Team, and a member will get in touch with you by email to offer suggestions and help you choose the right amp for you and your subwoofers. For immediate help, you can contact them via phone or chat.

  • sahel from dhaka

    Posted on 8/28/2015 5:46:14 PM

    hi

  • James from Decatur

    Posted on 8/30/2015 8:42:00 PM

    I have two crown x4000 series amplifier operate at 1000w per channels at 8 ohm, I have tow 818 peavey subwoofer continue 300 watt do my amplifier have to much power for the sub if so how power should my amplifier power be this is for a church PA system, I want to run both sub on one amplifier channels 1 and 2 which will be 600 watt. Thank you

  • Alex from florida from greenacres

    Posted on 8/30/2015 11:51:07 PM

    I recently bought 3 Pioneer Ts-w3003d4 12" 2,000-watt  600rms subwoofers. What kind kind of amp(s) do i need and capacitor(s)? Also, what kind of subwoofer box is the best for it?

  • Buck Pomerantz from Crutchfield

    Posted on 8/31/2015 12:53:18 PM

    James, Just because you have a 1000-watt amplifier doesn't mean you have to send all 1000 watts to your subwoofer. You can limit the level your subs see by setting the amp gains low enough to never allow them to be overdriven.

  • Jaeden Hudson

    Posted on 8/31/2015 11:45:43 PM

    I want to get the MTX 5512-44 sub. My 6 ch amp can put out 180 watts rms bridged x2 into 4 ohms. So I know I would have to bridge each vc to get it to work but because this sub requires a minimum of 200 watts rms would I be doing anything bad to the amp and/or sub? New to all of this so I really don't know.

  • Buck Pomerantz from Crutchfield

    Posted on 9/1/2015 12:56:03 PM

    Jaeden, That DVC 4-ohm sub can only get wired as a 2-ohm or an 8-ohm load, so using bridged amp channels won't do much good - low power on the 8-ohm load and the amp can't handle a 2-ohm load when bridged. Maybe the DVC 2-ohm model wired to 4 ohms will work, but I don't know exactly what amp you have so I can't suggest which sub would work better.

  • Rico from Agana Heights

    Posted on 9/3/2015 2:27:14 AM

    I have a 10" Kicker 40CWRT101 1-ohm DVC and a JVC KS-AX3205D, both of which were put together by a crutchfield specialist. A friend and I DIY and hooked up only one side of the sub to the amp. We might have fried something because the sub won't work and it makes a pop sound and then nothing. What did we do wrong?

  • Buck Pomerantz from Crutchfield

    Posted on 9/3/2015 10:07:19 AM

    Rico, I can't imagine what you intended to accomplish by connecting a single voice coil of a dual voice coil sub to an amp. The amp, not stable for a 1-ohm load, tried to output over 300 watts RMS into a 1-ohm coil rated for 250 watts. Because you bought your gear from Crutchfield, you could call Tech Support for more free help troubleshooting your system. Their toll-free number is on your invoice.

  • Daniel Wise from Pueblo

    Posted on 9/3/2015 2:41:24 PM

    If I buy 1000w Rockford fosgate, will I be fine if I connect them to an 1100 watt boss amp?

  • Buck Pomerantz from Crutchfield

    Posted on 9/3/2015 4:43:08 PM

    Daniel, Not knowing exactly what subwoofers you have make it impossible to give advice on how to wire them together. If you want a question answered about your system, you must identify your equipment by brand names and model numbers.

  • Daniel from Pueblo

    Posted on 9/4/2015 9:28:02 PM

    Sorry sir, I have two Rockford fosgate 12's 500 watts each, and I'm wondering if an 1100 watt boss amp will be ok with them. If not, what should go to as far as watts in an amp for these speakers.

  • Buck Pomerantz from Crutchfield

    Posted on 9/5/2015 4:27:15 PM

    Daniel, You still haven't identified your gear well enough for me to give you advice on hooking it up. But, if the amplifier you're referring to is a Boss R1100M, I would suspect its 200-watt RMS output won't pose much of a threat to two Rockford Fosgate subwoofers, no matter what their voice coil configuration, impedance, or RMS power rating may be. However, you can burn up the amp by hooking up the subwoofers incorrectly.

  • Peter

    Posted on 9/5/2015 10:02:17 PM

    I wanna put in two 12s and a 15. Can I just use one amp? If so how big does it have to be?

  • Travis from Brady

    Posted on 9/6/2015 6:18:37 PM

    I have one Pioneer TS-W1207D4 (12in. 4 ohm sub) and looking for an appropriate amplifier. The Pioneer website states this sub is rated at 400rms. Not sure if that is at 4ohm or 2ohm. I'm looking at an MTX Audio Thunder 500.1 monoblock to power it. It has 4 terminals however (+,+,-,-). Minimum 2 ohm load and 500rms Confused and need help figuring out the following: 1)Is the Pioneer sub rated 400rms at 2ohm or 4ohm? 2)Is the MTX AUDIO Amp good to power this type of sub? 3)How should I wire it considering the 4 terminals? (++--) I think this amp is bridged internally

  • Sam Han from Las Vegas

    Posted on 9/7/2015 12:05:36 AM

    What about the amps classes? There is no mention of them. For example, most of the mono amps I see are Class D. Then there are other like BC or BD. Not entirely sure. But what are they and what are they good for?

  • malcolm from forest,ms

    Posted on 9/7/2015 9:00:55 AM

    I have the kenwood kac-7005ps amp rated 500wx1 at 2 ohms ant have 2 kicker c104 10 in. subs at 4 ohms the subs are rated at 50-150w rms if I wire the subs parallel pos to pos neg to neg changing them from 4 ohms to two ohms by my calculations the subs should be receiving 166w rms each would this be safe on the subs rated at 150 rms

  • Buck Pomerantz from Crutchfield

    Posted on 9/8/2015 11:00:04 AM

    Peter, You can run three subwoofers with one amplifier, but the subs would all need to have the same impedance and power rating. The amp would have to have enough power to accommodate the sum of the RMS power ratings of all three subs.

  • Buck Pomerantz from Crutchfield

    Posted on 9/8/2015 11:37:47 AM

    Travis, That sub is a dual voice coil (DVC) 4-ohm sub that can get wired as a 2-ohm or as an 8-ohm load and is rated for 400 watts RMS no matter which way it's wired. That amp will work fine wired this way. That mono, 1-channel amp has two sets of speaker output terminals, wired together inside the amp, for convenience when hooking two speakers in parallel.

  • Buck Pomerantz from Crutchfield

    Posted on 9/8/2015 12:40:40 PM

    Sam, Amplifiers are divided into different classes defined by how their internal circuitry works. Discussion of Amplifier Class is irrelevant in an article about matching amps and subs together - all amps get wired the same way no matter what Class they are. For more on that check out this FAQ answer.

  • Buck Pomerantz from Crutchfield

    Posted on 9/8/2015 12:56:57 PM

    Malcolm, 500 watts RMS may be a tad too much for those subs but you should be okay as long as you keep the amp's sub channel gain set low.

  • Cody from Rochester

    Posted on 9/9/2015 9:12:55 PM

    I have two Kenwood KFC 3013ps they have a combined rms of 800, can I use a 1200w amp? Specifically a soundstream 1.1200D and help would be greatly appreciated

  • clayton from columbia, mo

    Posted on 9/10/2015 12:14:12 AM

    I currently have an Autotek AT1000 power amp and am using a Bazooka BT6024DVC sub, because it fits the space well. The amp is set to mono and the sub's inputs are bridged. Am I hurting the amp or sub? Is there something sized similarly that would work better with this amp? it is in a station wagon and must fit between the second seat and the rear-facing seat when I carry passengers.

  • Michael from Georgetown

    Posted on 9/10/2015 1:02:44 AM

    I just purchased 2 of the kicker cvr 10's. I would like to match it with a kicker amp but not sure which one to go with. My dealer recommended the kicker 1200.1 but I think this is to much amp. They will be in my 16 year olds truck. With that said I want the right amp, not to much amp. Please help. Thank you.

  • Josh from Odessa

    Posted on 9/10/2015 12:00:21 PM

    Hi Buck, I have the setup in the first example with 2 Alpine SWR-8D4 but am using an Alping PDX-M6 amp to power them. I have them wired together for a 4 ohm load also. My question after reading a lot on OHM's law and setting the amp gain for lower RMS power subs is what is your recommendation on my amp's gain setting. If I go with everything I've read and watched on getting the right amount of voltage from the amp my gain setting is at 0. Of course having the 2 subs wired together at a 4 OHM load is like you said in your example, a 700 watt 4 ohm load so do I need to worry about the amount of volts I'm pushing to subs by increasing the gain on my amp? Thanks Josh

  • Buck Pomerantz from Crutchfield

    Posted on 9/10/2015 12:24:54 PM

    Cody, Yes, wired like this that amp should send those subs 700 watts RMS.

  • Buck Pomerantz from Crutchfield

    Posted on 9/10/2015 12:35:42 PM

    Clayton, It may seem like using a 1000-watt amp to run a 300-watt sub might endanger the sub, but if the sub's coils are wired in series like this, presenting an 8-ohm load to the amp, you should be alright. Especially if you keep the gain set low and don't play distortion.

  • Buck Pomerantz from Crutchfield

    Posted on 9/10/2015 12:59:17 PM

    Michael, Kicker makes two kinds of 10" CVR subs: dual voice coil (DVC) 2-ohm and DVC 4-ohm models. Which ones you have will affect what amp will work best. If you have the DVC 4-ohm models, you'll want an amp that can put out between 600 and 1200 watts RMS at 4 ohms or 1 ohm. If you have the DVC 2-ohm models, get an amp that can do 600 to 1200 watts RMS into a 2 ohm load. Kicker makes a few amps smaller than the 1200.1 that'll probably work, like their KX800.1 or CX600.1.

  • Buck Pomerantz from Crutchfield

    Posted on 9/10/2015 4:43:57 PM

    Josh, I'm not sure what your concern is about your gear - the amp can put out 600 watts RMS to those subs, which together have a 700-watt RMS rating. As for setting the amp's gain, check out this article for some better methods of doing that.

  • Joel

    Posted on 9/24/2015 9:13:17 AM

    I have two 4x6" SPS-406 speakers, two 6.5" SPS-610 speakers & two 12" SWA-12S4 subwoofers. If i buy a PDX-V9 5 channel amplifier, will this work & if so how would i properly do this? I'm pretty sure the amp will handle the power for all these speakers but i'm not sure if i can use the (one) sub channel for both subwoofers... I also have 4awg wire & an 80 amp fuse.. Will that be sufficient size wire & amp for this setup? One last question is would it be better to use a capacitator or just get a yellow optima battery to handle all this power? Thank you in advance...

  • Buck Pomerantz from Crutchfield

    Posted on 9/24/2015 2:00:13 PM

    Joel, Wire your two subwoofers to the sub channel of that amp like this, and they'll be able to receive 500 Watts RMS, perfect for two 250-watt rated subs. 4-gauge power and ground wiring are recommended for the amp. And I doubt you will need a capacitor or an extra battery for this setup.

  • Christopher L. Wright from Louisville

    Posted on 9/30/2015 6:24:02 AM

    Buck I have 4 Kicker 10C104 and was wondering if wired to a 4 ohm load could I use a Pioneer GM-A5602 2-Channel Bridgeable Amplifier.

  • Buck Pomerantz from Crutchfield

    Posted on 9/30/2015 10:56:50 AM

    Christopher, Yes, that amp can drive those subs wired that way - although those subs could handle an amp twice as powerful.

  • John

    Posted on 10/4/2015 8:05:19 AM

    2x Focal Sub P30DB - 12" Subwoofer - Dual Voice Coil Focal FPP1000 - 1/Mono Channel Amplifier Sub wirring? And would this be enough power to amplify 2 of these subs?

  • Buck Pomerantz from Crutchfield

    Posted on 10/4/2015 11:22:59 AM

    John, You can safely wire that gear together like this, although those subs can take twice the power that amp can put out.

  • John

    Posted on 10/4/2015 12:05:10 PM

    subs gives me 600rms and amp only 350rms at 4ohm load, as you saying i need twice more power from amp as you saying?

  • Micheal from evansville

    Posted on 10/5/2015 5:16:09 AM

    I am wanting to use a 15" boss phantom 2500 sub with a boss 5000w amp (sorry can't remember the model numbers because I haven't bought them yet), is this possible?

  • Buck Pomerantz from Crutchfield

    Posted on 10/5/2015 12:05:31 PM

    John, Sorry if I was confusing. Your gear will work perfectly fine together. I was just pointing out that if you wanted to, you could upgrade to a stronger amp. You don't have to, but you could if you want.

  • Buck Pomerantz from Crutchfield

    Posted on 10/5/2015 4:57:06 PM

    Michael, That gear probably can get wired together safely, but without knowing the model numbers, I can't tell for sure.

  • leo m

    Posted on 10/12/2015 8:25:21 AM

    I currently have a kicker mono dx 250.1 wired with 8 guage wiring and a kicker comp 10 svc in a truck box in the back of my car. The specs for the amp are 150rms @ 4omhs and 250@ 2omhs. The specs for the sub are 150 rms @ 4omhs. They don't sound as loud and would like to get out as much of it as possible. I had this set up in a truck previously. Would it be better to get a bigger box for the sub? If I do get a bigger box, should I get ported or sealed? I listen to all types of music ( rap, rock, Spanish). Or could i add another kicker comp sub with the same specs and a dual box? Also how big of an amp can I put on 8 Guage wiring? Thank you!

  • Drew2849

    Posted on 10/13/2015 1:31:18 PM

    I just purchased a HO-110-w6v3 subwoofer/enclosure from Crutchfield. I've tried doing a lot of research for powering the sub which handles 600W RMS at 2 ohms. I already owned a JBL GTO-751EZ amplifier which puts out 750W RMS at 2 ohms. I know this article says it would be safe to power the sub with that amp because of the 75%-150% range, but I really don't want to damage the sub and I'm nervous about setting the gain properly. My buddy owns a SMD-DD1 distortion detector that I could use to set the gain of the amp but wouldn't that put maximum power (without distortion) to the subwoofer? Should I use Ohm's Law instead, to put the proper voltage to the speaker from the amplifier so it is only getting 600W?

  • Buck Pomerantz from Crutchfield

    Posted on 10/13/2015 3:34:55 PM

    Leo, If 150 watts RMS to a sub rated for 150 watts isn't loud enough, you need another sub and a stronger amp. 8-gauge power wiring will support up to about 350 watts of amplification. Your choice of a ported or sealed enclosure entirely depends on your taste for bass. Check out Sealed or ported for help in deciding.

  • Buck Pomerantz from Crutchfield

    Posted on 10/13/2015 3:44:55 PM

    Drew, If you want to set the gain of your amplifier so that it can only put out up to 600 watts RMS clean, then, after disconnecting your sub and playing a 40 or 60 Hz, 0 dB test tone, set the gain so the output voltage reads 34.6 VAC RMS on a multimeter.

  • jurgis andrijauskas from Poole UK

    Posted on 10/23/2015 9:26:58 AM

    hi Buck i have a Focal SBP30 subwoofer its rated 300 watts at 4ohm and the woofer inside is SVC (just checked) i have amp 500 watts at 2ohms rated (Focal FPP1000) so if i buy another box and wire subs directly from box to box to create this diagram am i right?

  • Buck Pomerantz from Crutchfield

    Posted on 10/23/2015 1:25:15 PM

    Jurgis, Yes, that should work well.

  • Gernot Winkler from Miami

    Posted on 11/1/2015 4:46:38 PM

    Excellent article. Explains perfectly the science behind a great sound. SUPER!!!

  • Matt from Ohio

    Posted on 11/9/2015 4:22:00 PM

    So if my math serves me correctly I should be able to pair aa single Pioneer TS-W3003D4 wired at 2-ohms (600 continuous) with a Pioneer GM-D9601 which is rated at 800 x 1 @ 2 ohms. Or is that amp to powerful for that single sub? Also if that amp is indeed to powerful would the GM-D8601 be a better fit with a 500 x 1 @ 2 ohm output? Trying to plan ahead if I ever decide to get a second sub so I would really prefer the GM-D9601 for the versatility to add to the system if decide to do so. Thanks

  • Buck Pomerantz from Crutchfield

    Posted on 11/10/2015 12:04:40 PM

    Matt, That amplifier and subwoofer make a great match - just be sure to set the amp's gain so that the sub never distorts. Then, when you add the second sub, you can wire it with the other gear like this. The amp is stable for the 1-ohm load and will be able to put out up to 1200 watts RMS, 600 for each sub.

  • Jake from Ballarat

    Posted on 11/19/2015 9:23:11 PM

    Hey mate just wondering if you could give me a hand picking a amp i have dual 10" comp r kicker subs in the ported enclosure 40DCWR102

  • Buck Pomerantz from Crutchfield

    Posted on 11/20/2015 9:18:00 AM

    Jake, I assume you're in Australia. Unfortunately, we're only licensed to sell gear in the United States and Canada. I don't even know what car stereo equipment is available in your country. An online search ought to bring up at least one car audio dealership somewhere near you. Look for a mono subwoofer amp, with a subsonic filter, that can put out between 600 and 1200 watts RMS at 2 ohms.

  • Ace from San angelo

    Posted on 12/27/2015 4:04:31 PM

    I have 4 15-pr12d4v2 subs and I want to know if I can put all 4 on a power acoustik razor RZR1-2500 class D mono block

  • Buck Pomerantz from Crutchfield

    Posted on 12/28/2015 2:54:56 PM

    Ace, I don't see a Power Acoustic RZR1-2500 amplifier anywhere, just the RZR1-1500 and RZR1-2300 models. But either amp will drive those four subs wired like this.

  • Justin from Rochester

    Posted on 12/30/2015 2:47:07 PM

    I have a 2300 watt boss sub and currently using a rockford fosgate R500-1. It's wired at 2ohms and its clipping and randomly going off when I turn it up. Any idea why? Is my set up wrong?

  • Buck Pomerantz from Crutchfield

    Posted on 12/31/2015 10:32:31 AM

    Justin, Even without knowing the exact subwoofer you have or how it's wired to the amplifier, I can say that clipping is usually the result of an improperly set gain. If you continue sending a clipped signal to your sub, it will burn out. Check out this article for help on how to set amp gain properly.

  • Robert E.

    Posted on 1/21/2016 12:18:40 AM

    Hey Buck, I have 2 Alpine SWR-1243D's that have just been sitting for a couple years and would like to reconnect them. However, I am unsure of what current model or even a past model amp that would take full advantage of their capabilities. Any suggestions; I would prefer an amp that is also Alpine.

  • Buck Pomerantz from Crutchfield

    Posted on 1/21/2016 11:03:35 AM

    Robert, A great amp for those subs would be the Alpine PDX-M12. Wired like this diagram, the amp will be able to feed those subs 1200 watts RMS, 600 each, exactly their RMS rating.

  • jose from arlington

    Posted on 1/24/2016 6:06:18 PM

    i have 2 12' kicker comps the watts are 300 ive been using a sony xplode amp 1000 watts i took it to get it wired but it cuts off my brother said they weren't bridge how do i bridge them? and im looking at upgrading so what amp do u recommend a kicker 750 watt amp how would i bridge them then?

  • Buck Pomerantz from Crutchfield

    Posted on 1/25/2016 1:50:43 PM

    Jose, Not knowing exactly what amplifier or subwoofers you have make it impossible to give advice on how to wire them together. Kicker Comp subs come in SVC 4-ohm and DVC 4-ohm models. Sony makes a few amps that claim to make 1000 watts. If you want a question answered about your system, you must identify your equipment by model numbers as well as brand names.

  • Randy Bagby from kokomo

    Posted on 1/30/2016 9:11:25 AM

    I read through your "how to match subs to an amp" and can't believe a company the size of yours with the resources you have, have it so wrong. Wattage ratings on subwoofers are virtually meaningless. How much power a sub will handle and perform with is solely dictated by the excursion demands imposed by the enclosure. As long as you're not exceeding the mechanical limits of the driver you can basically give it as much power as you want. The more headroom the better. We listen to music, which is dynamic, so your sub will never see maximum power for more than split seconds. The only way to know how much power you need is to model the driver into an enclosure using the T/S PARAMETERS, but no mention of those whatsoever. Anything else is just a guess. Maybe an educated guess, but proper modeling takes 100% of the guesswork out of the equation. It's not hard, but it's the CORRECT way you should be educating people. Going by your recommendations my pair of 8"subs rated at 130w each should be on an amp of about 400w, but I know that in the enclosure they're in exactly what frequency they will exceed x-max and the db level that will occur, and they will handle just over 1000w. But in an IB configuration they will exceed it with less than rated power. What you're teaching will generally work, but why not teach people the CORRECT way to do things from the beginning.

  • Buck Pomerantz from Crutchfield

    Posted on 2/1/2016 12:11:03 PM

    Randy, If we were to include in the article the information you discuss, 99% of our customers would not understand it, and so the article wouldn't help them very much with matching subs and amps. The subject's complicated enough. One thought they might walk away with would be your statement that: "As long as you're not exceeding the mechanical limits of the driver you can basically give it as much power as you want." Only understanding the second part of that sentence, most people would blame their blown drivers on bad advice, and want warranty replacements or repairs. Reputable subwoofer manufacturers not only rate each of their products with a specific and useful RMS power rating but also state what kind of enclosures it will work in. If someone goes ahead and installs a sub in an infinite baffle (IB) arrangement that it wasn't designed for and blows it giving it its "rated power," they themselves would be responsible for the mis-application and damage, and wouldn't receive any warranty consideration. A sub designed to work in free-air or IB setups will be guaranteed to safely work at its rated RMS level.

  • Shawnderick from Santa Rosa beach

    Posted on 3/11/2016 1:31:14 AM

    I'm trying to see what's the best amp to push my 2 12" Rockford fosgate p2D4-12 Cause I have a 800 watts pioneer amp but I'm trying to see if it a great amp or not and if not what will be the best amp for them.

  • Buck Pomerantz from Crutchfield

    Posted on 3/11/2016 1:16:23 PM

    Shawnderick, For a bunch of power at a great price, check out the Rockford Fosgate R1200-1D subwoofer amplifier. Wired like this diagram, it'd send those subs up to 1,200 watts RMS.

  • Chris from Detroit

    Posted on 3/11/2016 1:16:55 PM

    Hello, and firstly let me thank you for the wealth of information your site, and this thread in particular have provided me. I am looking to purchase 2 of the pioneer shallow mount 10" woofers (TS-SW2502S4) rated 300w/RMS (1200max) @ 4ohms. I intend to run them with a pioneer GM-D8601 rated 300w@4ohm, 500w@2ohm, or 800w@1ohm (all RMS). My question is; what would be the proper way to wire this amp for 1ohm allowing 400w RMS to each woofer, given that this amp has outs for 2 speakers already (+-.+-) not simply one set of outs (+-). Or would it be best to simply wire each woofer to each output, and would that essentially be running each at 2ohm (250w each speaker)? The two sets of outputs has me confused a bit I suppose. Thanks again for your help!

  • Buck Pomerantz from Crutchfield

    Posted on 3/11/2016 3:19:22 PM

    Chris, Those subwoofers are SVC (single voice coil) 4-ohm subs and two of them can only get wired together as an 8-ohm or a 2-ohm load. That mono, 1-channel amplifier has two sets of speaker output terminals, wired together inside the amp, for convenience, and if you hook a speaker to each terminal it would result in the two speakers being wired in parallel, cutting the total impedance in half. For your set-up, that's exactly what you can do: Wire a 4-ohm sub to each terminal, and the amp sees 2 ohms as its total load. It's electrically the same as in the diagram in the link.

  • Kenny from Montgomery

    Posted on 3/14/2016 12:26:23 PM

    I have 1 kicker compr 12 dvc, if I have it set to 1 ohm what amp would be best

  • brian linge from wells

    Posted on 3/16/2016 10:43:00 PM

    hello i have just purchased two volfenhag 2500w max 12" zx-4812dvx subs i cannot find anything about what ohms they are so i know how to wire them. i have a class d ssl 5000watt 1ohm amp i thought this would be a good combo but i cant find the impedence for the subs please help ps the subs were made in 2007

  • Buck Pomerantz from Crutchfield

    Posted on 3/17/2016 12:21:22 PM

    Brian, I'm unfamiliar with those subs and an internet search came up empty, so I can't help with finding their specs. I suggest you contact Tech Support through the Volfenhagaudio website and see if they can help.

  • Jeff from high springs

    Posted on 3/17/2016 9:29:37 PM

    I was looking at buying a rockford fosgate r2s 1x10 subwoofer with a 100-200 watts rms (400 watts peak power) and wanted to know if The BOSS Audio R1100M RIOT Series 1100W Mosfet Power Monoblock Amplifier would be a good fit.

  • Buck Pomerantz from Crutchfield

    Posted on 3/18/2016 10:47:29 AM

    Jeff, I'm unfamiliar with that amplifier and can't find its RMS power specification at 2 ohms, which that subwoofer is, but it will probably work just fine.

  • John from Sooke

    Posted on 3/20/2016 12:58:55 AM

    Hi Buck, I have 1 Polk Audio db1040DVC 10-Inch Dual Voice Coil Subwoofer and a Kenwood KAC-7005PS amp. the amp puts out 500 watts RMS x 1 at 2 ohms but the sub is 270 watts. Will I be ok with this setup or should I concider a differant sub?

  • Buck Pomerantz from Crutchfield

    Posted on 3/21/2016 12:10:42 PM

    John, Just because an amplifier can put out 500 watts doesn't mean you have to always play it that loud. You should be fine using that amplifier with that subwoofer, as long as you set the amp gain low enough to never distort the sub's sound.

  • John from Sooke

    Posted on 3/21/2016 9:36:11 PM

    Thank you Buck. I have dug a little deeper and figured out the ohms law stuff and will use a multi meter and 50hz tone to set the gain so I don't blow up :-)

  • Chris Norris from Titusville

    Posted on 3/25/2016 12:16:42 AM

    This is the best site I've seen by far your great. I don't know a lot about this stuff an I see u give people diagrams with your answer. I have a amp an sub in my car already but I want to replace it I have the sub just need the amp. I have one pioneer TS-W3003D4 sub it's a dual 4 ohm 600w rms dvc. I only need a amp for this one sub an would like to safely get the most out of it. Could you give me a few amps that would go great with this sub an fall between $150 to 250 give or take. Thanks for any info an the time u take to help others.

  • Buck Pomerantz from Crutchfield

    Posted on 3/25/2016 10:54:40 AM

    Chris, Thanks for the kind words. I've forwarded your question to Crutchfield's Sales Advisor Team, and a member will get in touch with you by email to offer suggestions and help you choose the right gear for you and your vehicle. For immediate help, you can contact them via phone or chat - just click on the phone icon at the very top of this page.

  • Mark from UK

    Posted on 4/3/2016 5:04:23 PM

    Hi. If I wire this amp [Vibe Lite Box Bass 1 Mono Amp] to this sub [Helix Esprit E10W 10" DVC 2-ohm subwoofer] using your diagram like this would that be OK? I figure it should give me 300watts rms throughout?

  • Buck Pomerantz from Crutchfield

    Posted on 4/3/2016 6:12:22 PM

    Mark, I'm not familiar with that gear, but it appears they should work together quite well. And wired the way you suggest.

  • Ryan from Toronto

    Posted on 4/20/2016 4:21:53 PM

    Hello, 3 questions...currently i have an MTX JH600 mono-block amp and a single Infinity Kappa 102.7w. It is a switchable 1 or 4 ohm model...not sure if its svc or dvc... 1. can i match this sub with a current model such as the kappa 100.9w 2. will my amp have the power to drive both and how should it be set up. 3. Ported or sealed box...its going into a trunk.

  • Buck Pomerantz from Crutchfield

    Posted on 4/21/2016 12:51:34 PM

    Ryan, Those two subwoofers will work together just fine. Set both their switches to 4-ohms and wire them to that amp like this diagram. In this configuration, the amp will be able to put out 600 watts RMS total, 300 to each sub. As for ported versus sealed enclosures, that's a choice you'll have to make based on your tonal preferences and the style of the music you listen to. Check out this article for help deciding that.

  • tyler

    Posted on 4/21/2016 11:14:48 PM

    I have 2 sundown audio E10's 500 watt RMS and a oxygen audio air t700. Would this amp be good for these sub's?

  • Buck Pomerantz from Crutchfield

    Posted on 4/22/2016 11:07:57 AM

    Tyler, I can't recommend wiring together gear I'm unfamiliar with which Crutchfield doesn't carry. In order to tell if that amp will run those subs successfully depends on the subs' coil configurations, impedance, and RMS power rating - and I can't find that information even with a web search. Perhaps you could contact the vender you got your gear from and find out their specs.

  • Rylon from Greenwood

    Posted on 4/29/2016 2:23:30 AM

    I have 2 sundown audio e10s which are 500 rms each. what amp would you recommend pairing with them?

  • Zach from Corinne

    Posted on 5/2/2016 6:32:25 PM

    I have 2 kenwood kfc-w3012's. the back of each sub says 400w rms and 4 ohm impedance. I can kinda figure out which amp would power these, but I'm looking for an amp that would that will push them to their full potential. which amp would you recommend for me to help these subs perform their best?

  • Greg from New Zealand

    Posted on 6/3/2016 11:03:02 PM

    2 12" pioneer subs tsw309d4 DVC 4-ohm 400rms each. What amp do i need?? Help me

  • Buck Pomerantz from Crutchfield

    Posted on 6/6/2016 2:25:48 PM

    Greg, An amp like Alpine's MRX-M110 would be able to supply those two 400 watts RMS rated subs with 800 watts RMS total, a perfect power match. Wire them like this diagram.

  • JImmy from Glendale

    Posted on 6/11/2016 2:49:57 AM

    Buck, thanks in advance for any advice you can offer. I have a RF Prime 300.4 amp with a build sheet rating of 403 watts. What I want to do is run two rear 6.5 speakers off my head unit and run the door 6.5 speakers from two channels of my amp, with a sub (10in ?) off of the other two amp channels bridged. I looked at the wiring diagram in my RF manual and it looks like I will need a SVC 4 ohm sub. But at what power rating will the sub need to be? 200W?

  • Buck Pomerantz from Crutchfield

    Posted on 6/13/2016 8:51:37 AM

    Jimmy, Look for a SVC 4-ohm sub or a DVC 2-ohm sub (wired like this) rated between 100 and 200 watts RMS. Rockford Fosgate's R2SD2-10 shallow-mount sub might be perfect for you.

  • Felix Medrano from San Antonio

    Posted on 6/30/2016 2:20:28 PM

    I received a 10" 400W Kicker CompRT, will my Kicker amp that does 300w X 1 @ 2ohms be OK for it ? Are the 300w achieved at max gain setting on the amp or will I have to tune it to 300W?

  • Buck Pomerantz from Crutchfield

    Posted on 6/30/2016 4:54:03 PM

    Felix, Not knowing exactly which subwoofer you have makes it impossible to give advice on how to wire it. Kicker makes 10-inch CompRT subs in a DVC 1-ohm and a DVC 2-ohm model. If you want a question answered about your system, you must identify your equipment by model numbers as well as brand names. As for amp gain, it is not for achieving maximum output. It is to match the input sensitivity of the amp to a receiver's output. Check out this article for help setting amp gain.

  • Randy Bagby from Kokomo

    Posted on 7/6/2016 3:30:49 PM

    You would think a company the size of crutchfield would employ engineers that know how this works and give proper answers. Quite frankly, I have lost respect for your company. The amount of power a subwoofer cab handle is dictated by excursion demands imposed by the enclosure. The only way to know is to middle it using the T/S PARAMETERS and a good modeling program. In reality, subwoofer wattage ratings are the most worthless spec the company gives you. Who cares how much heat it can handle, we listen to music, which is dynamic. A driver in a small sealed box might take 3X's it's rated power to achieve x-max whereas the same in an IB alignment may pass it's mechanical limits on a third of what the company recommends. All you're doing is guessing at what might work, but have absolutely no way of knowing without knowing what enclosure the driver is going in. Please research this subject do you can inform your potential customers the correct way to pick an amp.

  • Buck Pomerantz from Crutchfield

    Posted on 7/6/2016 4:40:14 PM

    Randy, It sounds like you know a lot about subwoofers, but probably not so much about customer service and warranty returns on products, which is what those power ratings are for. That's one reason you've resubmitted this comment from one you made last January. I urge you to reread my answer to you from then - it still applies.

  • Josh from San Antonio

    Posted on 7/7/2016 1:28:41 AM

    I was wondering what amp I needed if I were to buy two JL Audio 12TW3-D4 12" 400W Dual 4 Ohm thin-line subwoofers. I did the math on 75%-150% of 800watts RMS and it's 600-1200 watts rms for the amp but I don't know what amp to get. Does the amp need to be a 4ohm amp with 1200 watts rms? Or anything in between 600-1200 watts rms? If it's a 900 watt rms amp will I not get the full power of my subs?

  • Buck Pomerantz from Crutchfield

    Posted on 7/7/2016 9:27:52 AM

    Josh, You're correct as to how much power you'll need for that pair of subs. The other part of the equation is at what impedance does this power need to be delivered through? Two DVC 4-ohm subs can only get wired together to form a 16-ohm load, a 4-ohm load, or a 1-ohm load. So, you'd get an amplifier that can output 600 to 1200 watts RMS at one ohm or at four ohms. Check out Pioneer's GM-D8601. It could feed those subs a total of 800 watts RMS, 400 each, which is exactly their top RMS rating.

  • Josh from San Antonio

    Posted on 7/9/2016 2:07:26 AM

    Hey Buck, thanks for helping me out but I have one more question. Someone said on another thread, "IF you connected a sub running at 8 ohms, to an amp running at 4 or 2, the resistance would be great and the amp would run hot. When this happens it over heats and eventually shuts down resulting in returns. If the amp is running at 4 ohms and the sub is running at 1 or 2 then the sub gets pushed harder to compensate and the voice coils will generate more heat and lock up." If I use the two 400watt rms 4ohm subs with a 1ohm amp, will I be pushing the amp harder or do the subs get turned INTO a 1ohm load, by wiring them how you said, and then become equal when connected with a 1ohm amp? I just don't want to burn/blow anything up since there is a lot of money involved.

  • Buck Pomerantz from Crutchfield

    Posted on 7/11/2016 9:41:09 AM

    Josh, That someone on another thread is spouting absolute nonsense, and has confused your situation. For instance, if you connect an 8-ohm sub to an amplifier, the amp sees an 8-ohm load, and can't be "running at 4 or 2" like that person said - that's impossible. Subwoofers have impedance, measured in ohms, and are the "loads" the amp "sees" on its output. Amplifiers output different amounts of power (watts) through different impedance loads.

  • Josh from San Antonio

    Posted on 7/11/2016 8:00:07 PM

    Thanks for clearing that up Buck and thanks a lot for the help. Now I know my setup is gonna be more than good and now I'm confident!

  • Jaeden L Hudson

    Posted on 7/17/2016 3:02:26 PM

    I have an MBQUART RM 1000.1 that can do 1000 watts into 1-ohm, 700 into 2-ohms, and 500 into 4-ohms. I have an MTX 5512-44. Dual voice coil at 4 ohms each. Will my amp hurt the sub being as it will see 2-ohms and provide 700 watts into a 400 watt sub?

  • Felix M Medrano from San Antonio

    Posted on 7/18/2016 8:50:16 AM

    Josh.... That guy couldn't be more wrong. An amps impedance rafting, means if you run an sub impedance below that rating, it's no bueno for the amp. You can run a higher impedance, but it's optimal to run an impedance that matches the amps rating to reach its true RMS rating..

  • Buck Pomerantz from Crutchfield

    Posted on 7/18/2016 12:07:44 PM

    Jaeden, Although that amp is capable of overpowering that sub, you should be alright as long as the amp gain is set low enough to never allow loud distortion to play.

  • Sal G

    Posted on 7/21/2016 4:56:31 PM

    the complicated thing about selecting/wiring an amp is finding out where the amp is more stable, at a given impedance (load), without making the amp "clip". one reason why I don't like having an amp 'run' with an 1-ohm load

  • Andrew from Roanoke

    Posted on 7/22/2016 11:37:17 PM

    I just bought a 600 watt Planet audio amp. it's says it's 225w x 2rms at 2ohms, 113w x 2rms at 4ohms and 450w x 1 rms bridged at 4ohms. I need a sub to match as I have a sealed box already. I am still sort of lost. I'm looking at driving 1 sub and not looking at a super expensive sub, but I listen to dubstep and rap mainly so I want some bass. please help me with any good choice. I'll post back a sub I'm looking at In a little while.