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Wiring subwoofers — what's all this about ohms?

How wiring affects your sub's output


Buck Pomerantz

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.

More from Buck Pomerantz

JBL GT5-2402BR

JBL GT5-2402BR ported enclosure with two 15" subwoofers

Confusion concerning watts, amps, and ohms has been around for as long as people have been putting subwoofers in cars. Watts and ohms are entangled in a series of mathematical formulas that link them intimately together such that when one of them undergoes a change in value, the other often does too.

Briefly, here's how it works

Amplifiers provide the electrical pressure in a circuit; ohms measure the resistance, or load, against that pressure; and watts measure how much power is released as work. So, using one of those math formulas, an amplifier that provides 100 watts of power through a 4-ohm speaker, will produce 200 watts through a 2-ohm speaker, because it's easier to push that reduced load.

Voice coil makes sound — amplifier pushes it

At the heart of every speaker and sub is a voice coil. This is the device that puts up the electrical resistance and performs the work. (The amplifier provides the power.) The resisting property of a coil is called its impedance and is measured in ohms. The lower a speaker's impedance, the easier it is for an amp to supply power to it. Problems arise when the amp's output meets very little resistance (low impedance) and it tries to put out more power than it was designed to produce. This leads to the amplifier overheating and then, hopefully, shutting down to protect itself from burning up.

You don't want the amp to over-do it

So the capability of an amplifier has to be considered before applying a load to it (hooking up a speaker). The manufacturer's specifications indicate an amp's minimum impedance requirements. Almost all amps can drive a 4-ohm load. Most amps can work with 2-ohm loads on each channel, but not when the channels are bridged together. Some amps can drive a load as low as one ohm.

Pioneer PRS-D800

The two channels of this Pioneer PRS-D800 compact amp can be bridged by wiring the sub as indicated (click to enlarge)

Wiring options change a sub's impedance

To add to the confusion, in multiple-sub systems, the total impedance depends on how the subs and their voice coils are wired together — in parallel or in series. Parallel wiring means that the connection ends of each device are connected to the same things — plus to plus, and minus to minus. Series wiring means that the devices are wired one after the other — a plus of one to a minus of another.

When speakers or voice coils are wired in series, you add their impedances together to find their total impedance. Two 4-ohm speakers wired in series have a total impedance of 8 ohms. When speakers or coils are wired in parallel, however, the formula for their total impedance is more complicated. When the impedances of all the devices are the same, their total impedance, when wired in parallel, is that impedance value divided by the number of devices. For example: four 4-ohm speakers wired in parallel have a total impedance of 1 ohm.

Rockford Fosgate T0D215 sub

This Rockford Fosgate DVC 2-ohm sub has a built-in jumper so you can choose whether it has a 1-ohm or a 4-ohm total impedance (click to enlarge)

Dual Voice Coils give you even more wiring options

Subwoofer manufacturers make subs with dual voice coils (DVC) to take advantage of this difference in wiring schemes, so the user has more freedom of system design. A DVC 4-ohm sub can be wired into a system as a 2-ohm or as an 8-ohm load. A DVC 2-ohm sub can have a total impedance of 1 ohm or 4 ohms.

An example using 4 subs:

If I wanted 4 subs in a system, I might consider using 4 DVC 2-ohm subs, each with their voice coils wired in parallel to make them each 1 ohm subs, and then wire the 4 of them in series so my amplifier could drive them as a single 4-ohm load. Or, I could wire the voice coils in series, making them all 4-ohm subs, and then wire the subs in parallel so the amp would see the total load as one ohm. It would depend on my particular amplifier — which load it would do the best with.

Match power to power — use RMS only

To make subwoofers sound their best, they should be powered by an amp whose RMS output rating comes close to or even slightly exceeds the total of all the subs' top RMS ratings. If you want to run three subs whose RMS ratings are 300 watts each, you'll need about 900 watts RMS of power to run them.

Underpowered subs won't sound good or play very loud. Then, if you were to turn up the input to compensate, the amp could end up sending out clipped or distorted signals that could damage the subs. It's okay to overpower your subs a little bit, as long as the signal's distortion-free, because they're made to withstand occasional peaks well beyond their normal RMS rating.

What's right for you?

The sub and amp you need depends on what you want to hear. If you plan on listening to music at moderate volume levels or have a smaller car, a subwoofer with a lower power handling rating, say 100 to 250 watts, and a matching amp is a good combo.

The ultimate goal is to have the amp send its full power to subs that can handle it. The object of using different wiring options to optimize the impedance is to get the most power out of the particular amp and subs you have at hand. This also happens to be the most efficient way of running an amp & sub system. For more wiring specifics, check out our subwoofer wiring diagrams.

If you want to get right into choosing a subwoofer, take a look at our top-rated and best-selling subs.

Last updated January 22, 2016
  • Andrew Maloch from United States

    Posted on 4/26/2015 3:35:10 AM

    i have a spl series 2 z2x-1600 1600 watt max mosfet 2 channel bridgable amp with 2 12"mtx thunder 4500 subs that are bridged. i just got a 3rd sub that has the same 225rms as the mtx's. how can i wire these with out damaging anything, paralell or series? And when i go to make my box for them should i port it or seal it? and should i have my angles facing outward(so the 2 outside subs face away from each other) or inward( so the 2 outside subs angle towards each other)?

  • Buck Pomerantz from Crutchfield

    Posted on 4/27/2015 10:25:46 AM

    Andrew, MTX Thunder 12" 4500 subwoofers came in two models - SVC 4-ohm and DVC 4-ohm. 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 all three of yours are SVC 4-ohm models, I know of no way to safely wire them to that amplifier. However, if all three of them are DVC 4-ohm subs, then they can safely get wired like this diagram. As far as sealed vs ported, check out this article for help deciding. That amplifier, however, does not have a subsonic filter, so it won't work well with a ported subwoofer enclosure. And there's no way to predict how angling the subs will affect the sound. Experiment and report back with the results.

  • Tom from Michigan

    Posted on 4/28/2015 9:09:35 AM

    I have a Rockford Fosgate Punch P500--4 marine amplifier that I would like to add a sub too. Do I need a separate amplifier, or can I add it to the P500 ?

  • Buck Pomerantz from Crutchfield

    Posted on 4/28/2015 10:57:53 AM

    Tom, It depends on what the amplifier is driving now. If it runs four speakers, one per channel, then you'll have to get a second amplifier to run a sub. If your amp powers only two speakers, then you could power a subwoofer with the spare channels bridged together. The owner's manual will have a diagram showing you how to hook that up.

  • MELISSA from perth

    Posted on 5/18/2015 2:56:01 PM

    How would a Mtx Thunder 1000.1 rms class D 1 channel amp go with a T9510-44 mtx Thunder 9500 10" DVC sub with mtx street wires ZN5K-00 1/0 AWG amp kit Also what watt speakers do I need to use please help

  • Buck Pomerantz from Crutchfield

    Posted on 5/18/2015 3:33:59 PM

    Melissa, That sub and amp will work well together - wire them like this diagram. By itself, that amp would only need a 4-gauge kit, but if you plan on adding another amp to the system, then installing the 1/0-gauge kit is the best way to ensure adequate power flow for the future. When you replace your full-range speakers, look for speakers that can handle 50-75 watts RMS, so when you power them with an amplifier they can keep up with the subwoofer.

  • Devon A from Saskatoon Sk.

    Posted on 5/21/2015 12:19:55 AM

    I have been given a Kenwood amp, I'm not too knowledgable of the specs besides the basic numbers i've come across. Max Power Output 800 W × 1 Rated Power Output Normal (4 O) (20 Hz - 20 kHz, 0.08 % THD) 150 W × 2 Normal (4 O) (DIN : 45324 , +B = 14.4V) 150 W × 2 Normal (2 O) (1 kHz, 0.8 % THD) 230 W × 2 Bridged (4 O) (1 kHz, 0.8 % THD) 460 W × 1. I have a alpine type S12 that says it runs 500w RMS (250 a coil) @ 4ohms. how would I make this work? is it possible?

  • Buck Pomerantz from Crutchfield

    Posted on 5/21/2015 12:22:47 PM

    Devon, Giving an amplifier's make and model number help identify it much better than a jumble of specs, but I think you're talking about a Kenwood KAC-7201 2-channel amplifier. And the sub - is it an Alpine SWS-12D4? If so, you have a classic case of trying to pair a 2-channel amplifier with a dual voice coil (DVC) 4-ohm subwoofer - they don't go together very well. The best you can do with that gear is to wire each voice coil separately to each output channel of the amp. Make sure you keep the polarity of the wiring straight, and feed each channel the identical signal for input.

  • Jason from Commerce, TX

    Posted on 6/1/2015 12:23:00 PM

    I just want to make sure I'm wiring everything up correctly. 2 Amps (Alpine MRX-F65, Alpine MRX-M110), 4 X Infinity Kappa 60.11CS 6-3/4" to each channel of the MRX-F65, Boss Audio 8 Farad Cap to the MRX-M110 and 2 X Kicker 40 CWRT101 (Wired in series to make a 2 Ohm Load on the amp in a sealed box). With a 0 Gauge OFC Dual Power Amp Kit and 12 Gauge OFC Speaker wire. My question is. Should the Cap be wired before all the Amps or just the one pushing the subs? And should I have a fuse near the amps in addition to the one near the battery? Here is a link to the wiring diagram I was thinking about. [Link removed]

  • Buck Pomerantz from Crutchfield

    Posted on 6/1/2015 1:08:24 PM

    Jason, That is not the way a capacitor gets wired into a system. Check out this diagram. The cap should be located nearest the subwoofer amplifier, where it can do the most good restoring energy to the system when needed. The cap's positive terminal connects to the amp's positive power line and the cap's negative terminal connects to ground. Be sure to follow the instructions that will come with your capacitor. As for fuses, in a multi-amp system, where the amps don't have their own onboard fuses, you should indeed fuse each amp's power line between the distribution block and the amp for safety. And by the way, those subwoofers are each DVC 1-ohm, and two of them can only get wired together to form a 1/4-ohm, a 1-ohm, or a 4-ohm load.

  • Jason from Commerce, TX

    Posted on 6/1/2015 4:06:28 PM

    Thanks Buck, yeah I have never wired a capacitor before and I have not received it yet (so I have not seen the install instructions yet). Good to know from a expert and I believe the amps do have on board fuses. So I may just go with those. Keep up the good work. You have answered a lot of questions for me.

  • Chris Miller from Dallas, TX

    Posted on 6/2/2015 11:14:22 PM

    I am also installing 2 X Kicker 40 CWRT101 (1 ohm dual voice coils) but I didn't realize they were dual voice coil. How would I wire these two subs to 1 channel so it will have a 2 ohm load?

  • Buck Pomerantz from Crutchfield

    Posted on 6/3/2015 9:41:42 AM

    Chris, As I told Jason, two DVC 1-ohm subs can only get wired together to form a ¼-ohm, a 1-ohm, or a 4-ohm load.

  • Chris from Sacramento

    Posted on 6/15/2015 3:12:23 PM

    I just received some free alpine subs model (swe-10s4 4 ohm). I was looking for an amp when a friend mentioned he had one lying around. I asked for it and it turns out its a pioneer model (GM-7300M). There are two subs for this one amp and, according to my understanding, I might need a stronger amp. I figured that this diagram might be a good option to wire them in. Would I be wrong in my assumption? That would make them 2ohm correct? I don't really know much about car audio and have only ever done home theater, so this is familiar but still unclear. Any and all suggestions help, thanks! [Links removed]

  • Buck Pomerantz from Crutchfield

    Posted on 6/16/2015 11:37:29 AM

    Chris, That is indeed the way to wire that gear together. The amp will be able to supply the subs with 72% of their preferred RMS wattage, which is a little low. But you should be alright as long as you don't burn up the voice coils by trying to play loud clipped and distorted bass.

  • Kierra from United States

    Posted on 6/17/2015 11:17:25 PM

    I recently just upgraded from two rockford fosgate punch 2 12" subwoofers to the punch 3 12" subwoofers. I also purchased the rockford fosgate 1200 watt prime amp. Abc warehouse installed all of this for me. They said they have it wired at one ohm. I am not familiar with how the ohms work. My issue is even with the bass turned all the way down I can barely hear the music and the bass is way too loud. Is there any way I can fix this?

  • Buck Pomerantz from Crutchfield

    Posted on 6/18/2015 1:19:30 PM

    Kierra, The best thing you can do in your situation is to return to your installer and have them adjust the bass to the level you like. They should be able to accomplish this by either lowering the subwoofer output of the receiver, or lowering the sub amp's gain, or both.

  • Rod from United States

    Posted on 6/25/2015 7:42:05 AM

    I have the Infinity's Kappa Series 62.11i 6-3/4" and I want to hook up the Diamond micro2 to to my Street Glide, but I am confused about the best way to install them.

  • Buck Pomerantz from Crutchfield

    Posted on 6/26/2015 3:49:14 PM

    Rod, Sorry, we don't have much information at all on motorcycle installations. You may do better asking on the Street Glide forum though. Good luck.

  • Travis from Gatineau Quebec Canada

    Posted on 6/26/2015 4:38:51 PM

    Hello there! My setup is special, i have a JL 3ohm SVC 12' 700watt rms i have a quantum 4 ohm 15' 1000 watt rms i have a DB audio 4ohm DVC (currently @2ohm) 12' 900watt rms i have a 1 Ohm stable amp to play around with 1550watts @1 ohm my question is.. when mixing ohms, (ie: 4 ohms + 2ohms = 1.333 ohms ) and running off an amp parallel... Would Speaker (a) and speaker (b) react the same as on a bridged stereo amp, as an already bridged monoblock?...or would You get different wattages out of the speakers ? 1550 watts amp @ 1.3 ohms (1200 watts) ie : (a) = 2 Ohm 900 800watts 600watts stereo brdiged or 2 ch bridged mono block (b)= 4 Ohm 1000 400watts 600watts is this diagram true? or will the amp do the same thing?

  • Buck Pomerantz from Crutchfield

    Posted on 6/29/2015 10:41:37 AM

    Travis, I think what happens when you hook up a 2-ohm sub and a 4-ohm sub together in parallel is that the 2-ohm sub will get twice the power of the 4-ohm sub. If your amplifier can put out 1200 watts RMS to a 1.3-ohm load, then the 2-ohm sub would get 800 watts RMS and the 4-ohm sub 400.

  • matthew brown from lockport ny

    Posted on 7/5/2015 4:32:54 PM

    i have pioneer amp 4ohm i have it bridged because i only have one speaker its 10 inch Pyle witch is also 4ohm its a duel voice coil i have it it on series now is that fine or should i wire it parallel

  • Chris Green from United States

    Posted on 7/6/2015 7:43:46 PM

    I have 2 dual 4 ohm 1500 watt subs. And a 2 ohm 1500 watt amp how would I wire them?

  • Kyle from South Africa

    Posted on 7/7/2015 5:36:01 AM

    Hi. I have recently purchase x2 Targa 12" DVC 650wRMSx2 4ohm subs, in a SPL box, wired to 2ohms. I am new to all of this sound stuff and I am wondering what amp to get to play them at their full potential. I was looking at getting the Targa Dynamite 2500wRMS Monoblock (2500wRMS @ 1ohm; 1700wRMS @ 2ohms; 1300wRMS @ 4ohms). What do you recommend is the best way to wire it to this amp or which is a better amp to get? Any help in this regard would be greatly appreciated.

  • Buck Pomerantz from Crutchfield

    Posted on 7/7/2015 12:06:08 PM

    Matthew, It sounds like you have your sub wired like this, with the voice coils wired in series. Seeing as very few 2-channel amplifiers are stable for a 2-ohm load when bridged, I think you should leave your sub wired as it is.

  • Buck Pomerantz from Crutchfield

    Posted on 7/7/2015 3:38:52 PM

    Chris, 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.

  • Buck Pomerantz from Crutchfield

    Posted on 7/8/2015 10:25:59 AM

    Kyle, Two DVC 4-ohm subs cannot get wired together to form a 2-ohm load - only a 1-ohm, a 4-ohm, or a 16-ohm load are possible. The good news is that amp would work well with those subs wired together like this diagram.

  • Dennis Mitchell from United States

    Posted on 7/9/2015 11:49:41 PM

    I have a Rockford Power 800.2 amp and a Pioneer TS-W304R 12" Subwoofer 4-ohm single voice coil design, 1300W maximum power handling (300W nominal). Do I need to get a 2-ohm sub instead? i don't have much trunk space so i am funning a single sub. I am considering a couple of shallow subs but for now running the pioneer. Thanks for your input.

  • Chris from Pennsylvania

    Posted on 7/10/2015 2:21:42 PM

    I have a Pioneer GM-A5602 amplifier (450w RMS bridge 4 ohm). I want to run my two old school 1994 JL 12W4-4 subwoofers. They are 200w RMS Single 4 Ohm Voice coil. I was wondering if I connected them in series to make an 8 Ohm load and bridged them on the amplifier that they would be receiving 225 watts total to the woofers and 112 watts to each subwoofer ? I could run them in stereo but I don't have a divided wall enclosure to separate them.

  • Buck Pomerantz from Crutchfield

    Posted on 7/10/2015 2:56:39 PM

    Dennis, Your 2-channel amplifier can put out 800 watts RMS to that 300-watt 4-ohm sub when bridged, which is enough to blow it to smithereens. But it will work if you keep the amp's gain set very low.

  • Buck Pomerantz from Crutchfield

    Posted on 7/10/2015 3:51:58 PM

    Chris, Actually, if you wired your gear this way, each sub would get 225 watts RMS, which would be perfect for them. I don't think your enclosure's lack of divider will affect the power to each sub being delivered by different amp channels.

  • kevin from cleaburne texas

    Posted on 7/11/2015 8:58:58 AM

    What would be the best way to wire 2 pioneer ts-w304r (12) and a nitro 1600 watt 2 channel bridgeable

  • Buck Pomerantz from Crutchfield

    Posted on 7/11/2015 12:44:10 PM

    Kevin, If you're referring to a Nitro BMW-484 amplifier, then you'd wire your system together like this diagram.

  • Jesus from Denver

    Posted on 7/12/2015 8:21:11 AM

    Hello every one so my friend give me a 15 inch 2500 watts boss's fanthom 2 voice coil each are 2 ohm and a armor amplifier 2000 watts 1 Chanel. How should I set it up to get the best sound?

  • Buck Pomerantz from Crutchfield

    Posted on 7/13/2015 3:01:15 PM

    Jesus, My research shows that the 15" Boss Phantom subwoofer is a DVC 4-ohm sub. If that's the case, you should wire it to that amp like this diagram. If your sub actually is a DVC 2-ohm sub, then you'd wire it like this instead.

  • Jesus from Denver

    Posted on 7/13/2015 9:02:51 PM

    Thanks man that really helped and it's awesome the you guys help us to figure stuff out thanks

  • Matt from Omaha

    Posted on 7/16/2015 2:42:11 PM

    I have a apline mrv m500 amp and a rockford fosgate p2d4 sub. This is my first system so I'm new to wiring. Should i wire it to 2 or 4 ohms? How does the wiring look, mapped out. The amp is 500 watts rms and the sub is 400 watts rms.

  • Buck Pomerantz from Crutchfield

    Posted on 7/16/2015 3:53:27 PM

    Matt, Wire that gear together like this diagram and rock on.

  • shawn from tallahassee

    Posted on 7/16/2015 4:11:14 PM

    I recently purchased 4 8inch Rockford Fosgate P2D2 subs along with a Rockford fosgate R1200-1d prime amplifier... My questioni is will I have enough power from the amp to push the 4 subwoofers?

  • Jordan from Charlotte

    Posted on 7/17/2015 3:45:25 AM

    I have 2 Kicker Comps VR 12 inch subs and a Brutus Hifonics bxi 1206d 1200 watts super d-class mono amp. What would be the best way to wire these? I am building a sealed enclosure for them. How should I wire the subs together inside the enclosure?

  • Buck Pomerantz from Crutchfield

    Posted on 7/17/2015 9:54:41 AM

    Shawn, Yes you do. Wire your gear together like this diagram and your amp will deliver up to 1200 watts RMS to those subs.

  • Buck Pomerantz from Crutchfield

    Posted on 7/17/2015 12:10:31 PM

    Jordan, Kicker Comp VR subs come in two models, DVC 4-ohm and DVC 2-ohm, so wiring yours will depend on which one you have. If you have the 4-ohm version, wire them this way. If they're the 2-ohm versions, like this.

  • steve from columbus

    Posted on 7/19/2015 8:25:09 PM

    I have 2 jl audio 10w6v2 d4 and 1200.1 watt kicker amp...dvc is wired up parallel when i turn my volume up it cuts out i dont know whats wrong i hooked other subs up and they didnt cut out...please help me

  • Buck Pomerantz from Crutchfield

    Posted on 7/20/2015 9:51:42 AM

    Steve, It sounds like you have your subs wired up to your amp as a 1-ohm load and your amp can't handle it. I'm afraid the only safe way to wire your gear together is like this diagram.

  • Zayjon Wilder from pleasanton

    Posted on 7/21/2015 5:20:25 AM

    Hey buck, I had four 12 pioneer subs (Ts-w310d4) Two has blown but I had an extra two kenwoods kfc-w3013ps 12 in subs laying around. All four are 4 ohms. I've replaced the two blown pioneers. The kenwoods are louder bass wise but has 200 less watts than the pioneers. Will there be any problems with the different brands? One box different ports.

  • Buck Pomerantz from Crutchfield

    Posted on 7/21/2015 2:47:30 PM

    Zayjon, The problem isn't that you have different brand subs, it's that you have two different impedance subs. A DVC 4-ohm sub can't have the same impedance and an SVC 4-ohm sub. You didn't mention how you're amplifying them, but you should never wire different impedance subwoofers together to the same amplifier. The lower impedance subs will get twice the power of the higher impedance subs, possibly under-powering one while over-powering the other. That's a recipe for blowing subwoofers. Get separate amps for your different model subs.

  • Jake from Redding

    Posted on 7/23/2015 4:11:00 AM

    Hey I have a question: is it safe to run a 4 Ohm DVC sub bridged along with 2 4Ohm speakers on a 4 channel amp that supports 50 RMS x4 at 4 Ohms, or 75 RMS x4 at 2 Ohms? For the sub does it need to be set up to be independent, parallel, or series?

  • Buck Pomerantz from Crutchfield

    Posted on 7/23/2015 1:02:16 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.

  • Mark from Harker heights

    Posted on 7/24/2015 11:54:24 AM

    Hi, I have a pioneer svc 800 watt 400 watt rms subwoofer in enclosure (don't know the model). I want to buy a alpine pdr m65 mono amp 450 watt rms. Is that a good solution?

  • Buck Pomerantz from Crutchfield

    Posted on 7/24/2015 12:17:43 PM

    Mark, If your SVC subwoofer has 4 ohms of impedance that amplifier will make a perfect match. Even if it's a 2-ohm sub, you can still use that amp with it, just be sure to set the amp gain low.

  • Travis from Crowley

    Posted on 7/27/2015 10:34:23 PM

    Hi, my name Tavis I need little help. I have a jl audio 750/hd mono with 2 4ohm Memphis m5's. How and what is the best way to wire these for best performance?

  • Buck Pomerantz from Crutchfield

    Posted on 7/28/2015 12:59:17 PM

    Travis, I think those subs are DVC 4-ohm subs and you should wire them to that amp like this.

  • kristen from stockton

    Posted on 7/29/2015 10:16:14 PM

    I have a JL AUDIO e6450 amp. I was wondering how many watts it is. Its a 6 channel amp. It says something like 75 or 100x 6 x 4ohms or 2 ohms.

  • Jimmy walker from Gretna

    Posted on 7/30/2015 2:27:00 AM

    I have 2 rockford p2 dual voice speakers , running off of a 1000 watt alpine amp with a sony expload radio , with rockford 6x9's and when i turn it up to a certain point my systems shuts off and i have to cut the radio off and back on for the system to come on , any suggestions on how to fix this

  • Buck Pomerantz from Crutchfield

    Posted on 7/30/2015 12:50:28 PM

    Kristen, That amplifier can put out 6 channels of 45 watts RMS when each channel is driving a 4-ohm speaker. It will put out 75 watts RMS per channel when attached to 2-ohm speakers. You can also "bridge" adjacent channels together and get 3 channels of 150 watts RMS at 4-ohms each. You can download the owner's manual from JL Audio's website.

  • Buck Pomerantz from Crutchfield

    Posted on 7/30/2015 3:31:08 PM

    Jimmy, Rockford Fosgate P1 subwoofers come in DVC 2-ohm and DVC 4-ohm models, and it sounds like that for whichever ones you have, they're not wired to the amplifier correctly and its shutting itself off for self-protection. If you bought your gear from Crutchfield, you could call Tech Support for free help troubleshooting your system. Their toll-free number is on your invoice. If you purchased your equipment elsewhere, you can still get expert Crutchfield Tech Support - 90 days-worth for only $30. Click on this link for details.

  • Bryson from Emden il

    Posted on 8/1/2015 1:23:43 AM

    I have 2 4ohm alpine type R's and a 3000 watt crunch mono block. What way should it be wired for max impedance

  • Buck Pomerantz from Crutchfield

    Posted on 8/2/2015 11:46:25 AM

    Bryson, I think you meant to ask how to wire your gear together for maximum performance, not impedance - the higher a sub system's impedance is, the lower amount of power the amp can put out. You'd do best by wiring your gear like this diagram.

  • Tree Dude from Chattanooga Tn

    Posted on 8/5/2015 6:42:30 PM

    I have a 9oo watt pioneer 2 channel amp that puts out 225 rms watts at 2 ohms x 2 , this amp is hooked up to 2 alpine swt-10s2 10" subs that are 350 rms watts at 2 ohms each. Are these 2 subwoofers to much for my pioneer amp that puts out 125 rms watts x 2 less than the 2 subs that are stated to being 350 rms watts x 2 at 2 ohms? I ask because my wishes are to not over heat my pioneer amp & burn it up?

  • Adolfo Iracheta Jr from Abbeville

    Posted on 8/5/2015 9:27:52 PM

    If I wired my dvc 4 ohm subs down to one ohm and connected them to one channel one my amp then took a single 2 ohm sub and wired it to 1 ohm and connected it to the other terminal on my amp would it be ok... I have a hifonics brutus monoblock 2100.1 which has 2 terminals but is a super class d monoblock amp

  • Buck Pomerantz from Crutchfield

    Posted on 8/6/2015 1:10:06 PM

    Tree, An amplifier is never endangered by the rating of the subs it runs. An amp will overheat and shut down if it's hooked up to an impedance load lower than it can handle. You should be fine hooking up one of your subs to each of that amp's channels.

  • Buck Pomerantz from Crutchfield

    Posted on 8/6/2015 3:38:05 PM

    Adolfo, If you were to attach a 1-ohm load to each of that amp's output terminals, the amp would see it as a total ½-ohm load, start to overheat, and then shut down in protection mode. The amp's 2 sets of speaker output terminals, are 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.

  • Brenda Flazer from Las vegas

    Posted on 8/8/2015 5:41:12 PM

    Hi Buck Pomerantz, I have a question regarding the amp/seb setup i have going on right now. I am working with a Insignia NS-A1200 amp which is a 1ohm mono channel amp. Using it to power 2 kicker CompR 12inch subs. Which are the dual coil 2ohm subs. They are capable of switching to either 1ohm or 4ohm impedance. I am not getting the kind of sound i am looking for and these are brand new subs. I am concerned i am highly unpowering the subs. Can you please help me out with how it should be wired or maybe a proper amplifier? Thanks a lot

  • Buck Pomerantz from Crutchfield

    Posted on 8/10/2015 11:30:49 AM

    Brenda, Two DVC 2-ohm subwoofers should get wired to a mono amplifier like this diagram. That amplifier will be able to put out only 225 watts RMS in this configuration, which is, as you noticed, woefully inadequate for two 500-watt RMS rated subs. You'd do better with an amp that can put out between 750 and 1500 watts RMS at 2 ohms.

  • Chad from Dover

    Posted on 8/12/2015 4:26:52 PM

    I'm really pushy of some buttons and knobs on a stereo and know I've got a better mind of it since I've purchased a scrap Sony str-dg800 a/v system and I'm not even smiling at it well I'm very happy I needed air in/out at elecctronic media at home, so as this fall comes from my patients I'm sitting tight on speaker purchase and I seen the ohm matter thinkable to such this artical means it reads well I'm questioning you then that my choice of mini speakers would effect the point I'm set on a speaker build of Soundstream 5.25" speakers on this as I see a lot of sales company competitors do only offer 4ohm sets I like this artical and I want to make sure I could double up 4ohm to an agreement of my 4 front speaker outputs of 8ohm.. I'm not at all shy of the load if I call it it's called new home stereo to me I'm ready..

  • Thomas from Hubertus

    Posted on 8/13/2015 1:24:14 AM

    Hello I have two 12 inch type s Alpine subwoofers that run at 4 ohms each as well as a 1500 watt peak and a 500 rms rating. I recently bought a PDX-M12 Amplifier which runs at 1200 rms and a 2500 watt peak is this too much power for my subs?

  • Buck Pomerantz from Crutchfield

    Posted on 8/13/2015 12:46:29 PM

    Chad, If you're asking if those 4-ohm car speakers will work with that home theater receiver, then the answer is no. You'd do much better looking for 8-ohm speakers designed for stereo or home theater use.

  • Buck Pomerantz from Crutchfield

    Posted on 8/13/2015 1:35:36 PM

    Thomas, When matching amps and subs, you should ignore peak ratings, which are worthless, and only use RMS ratings. Running two 500 watts RMS rated subs (1000 watts total) with a 1200 watts RMS amplifier will work just fine.

  • john from los angeles

    Posted on 8/13/2015 7:00:11 PM

    i have a 2003 bmw 3251 4dr. Running 3 amps Boss 200watt to run my front Kenwoods 51/2. i have a 1100watt/ 2 ohm stable mosfet boss amp running my 4 6 inch Lanzars at 300watts rms each running in series. hits great. missing that UMFFF factor. So i recently purchased a 3000 watt Lanzar Amp with 2 Lanzar pro 10" at 1200 max each. I forget the rms on them. i placed them in a ported box which took about half the space of my trunk A lot of rattling which shows its hitting but did not hear or feel a drastic change that i was expecting. im thinking that its inclosed in the trunk the 4 6inch Lanzars are located in the car, 2 took place in the rear speakers near the rear window. and 2 i had customized myself and placed them in the middle of the rear seats. What would be the best thing to do with all these since trying to make those 10's be heard would be slim to none because they are pretty much enclosed in the trunk. also. can you mix match speakers with different wattage but the same ohmage? in other words running a PUNCH, KICKER, and a JLaudio 12"?

  • Buck Pomerantz from Crutchfield

    Posted on 8/14/2015 12:20:00 PM

    John, Check out this video about subwoofer placement - it may help you improve the sound of your bass. And it's perfectly alright to have different brand speakers in the same system.

  • Rodney from Durban

    Posted on 8/15/2015 5:06:16 AM

    Hi I have 2 street series targa 12" subs 5000w max with a 650w x2 rms on each sub I'm currently running them off a targa warrior 6800w 2 channel class d mono amp but can't seem to get the boom out of them. Any suggestions on wiring them up or any kind of help would be appreciated

  • Buck Pomerantz from Crutchfield

    Posted on 8/17/2015 9:32:07 AM

    Rodney, If you have two DVC 4-ohm subs and an amp that can handle a 1-ohm load, you'll get the most output wiring them together like this.

  • andrew from lucedale, ms

    Posted on 8/18/2015 11:36:58 PM

    I have a pioneer dvc 2 ohm & a planet audio 4 ohm dvc can I hook them up to a Sony 1200 w 2ch bridgable amp

  • Buck Pomerantz from Crutchfield

    Posted on 8/19/2015 11:31:14 AM

    Andrew, You should not wire different impedance subwoofers together to the same amplifier channel because the lower impedance sub will get twice the power of the higher impedance sub, possibly under-powering one while over-powering the other. That's a recipe for blowing subwoofers. In your case, if that amp is a Sony XM-2200GTX, you could wire the DVC 2-ohm sub at 4 ohms to one channel of the amp, and the DVC 4-ohm sub at 2 ohms to the other. The DVC 2-ohm sub would receive 200 watts RMS and the DVC 4-ohm sub 250. Without knowing the RMS ratings of your subs, I can't tell you whether it would work or not.

  • Hunter from Stonewall

    Posted on 8/20/2015 5:40:12 PM

    So if I have 2 subwoofers ,12 inches each, at 4 ohms a piece ,what kinda of amps should I be looking at.

  • Ray from El Mirage, az

    Posted on 8/20/2015 9:33:02 PM

    I bought an Infinity DVC sub sealed in a box . No idea of internal wiring. Have a Sony Xplode 1000 watt ( I believe specs say RMS 400watt) I can only run this sub on one channel when bridged it gets extremely hot. Running one channel it still heats up but will work all day. I drive for a living and enjoy my system for hours at a time. Any idea why this would get so hot? Is there possible wiring issues ? It sounds awesome, just hot!

  • Ray from El Mirage

    Posted on 8/20/2015 9:38:52 PM

    Same question right email sorry. Infinity. 1200 watt DVC UNSURE of internal wiring sealed box. When I bridge the sony 1000watt xplode it gets super hot. When using one channel I still get plenty of heat but will run all day. Update I tested ohm from the speaker leads disconnected from the amp I get 2.6 ohms ???? What the hey? It sounds awesome I am just concerned about melting down something important . Yes I am running 4 gauge power and negative . And very heavy speaker wire. Ideas?? Changes? This is the same Ray from a previous question I forgot 1 digit in my email! Darn!!

  • Buck Pomerantz from Crutchfield

    Posted on 8/21/2015 1:08:14 PM

    Ray, It sounds like you have a DVC 4-ohm sub wired to 2 ohms connected to a 2-channel amplifier that is stable only down to 4 ohms when bridged. But without knowing what your equipment is exactly nor how it's actually wired, it's impossible to say for sure.

  • Hunter Brossette from Stonewall

    Posted on 8/22/2015 6:58:08 AM

    Excuse me I forgot to put the wattage *facepalm*. The subs are 12 in autotek street machines with 4 ohms at 700 watts max and I'm pushing two of them so what are some affordable amps that I might look into. Thanks in advance.

  • Buck Pomerantz from Crutchfield

    Posted on 8/24/2015 10:26:04 AM

    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 subs. For immediate help, you can contact them via phone or chat.

  • m from plymouth

    Posted on 8/29/2015 6:03:20 AM

    ''The ultimate goal is to have the amp send its full power to subs that can handle it. '' Says Who ?.... who wants to go deaf ? Do You ?

  • t

    Posted on 8/30/2015 5:00:49 AM

    Hi i have 2 - 10' kicker comp d's and an alpine pdx 1.1000 amp which is the best way to hook these up

  • Buck Pomerantz from Crutchfield

    Posted on 8/31/2015 11:00:47 AM

    M, No one's recommending playing music so loud as to cause hearing damage. The sentence you quote out of context is about system efficiency and matching an amp to a sub. For instance, wiring a 1000-watt amp so that it can only produce 500 watts is a waste of money.

  • Buck Pomerantz from Crutchfield

    Posted on 8/31/2015 11:46:24 AM

    T, If your subs are the DVC 2-ohm models, you should wire them together like this. If they're the DVC 4-ohm models, like this.

  • Rich from Raleigh

    Posted on 9/2/2015 10:10:15 AM

    I have a 2000 Toyota Avalon and the Subwoofer has now blown for the 2nd time. It's a pain and its expensive to replace the exact one as its 3.7 Ohms. Would it do harm to install a same size Sub at 4 Ohms? I could just buy another repair kit and do it again or purchase a new 4 Ohm. Thanks for your time and help!

  • Buck Pomerantz from Crutchfield

    Posted on 9/2/2015 10:36:08 AM

    Rich, You can indeed replace your blown sub with an aftermarket replacement. A single voice coil 4-ohm sub will work fine. Crutchfield carries quite a few that'll fit your vehicle. You will have to re-drill the mounting screw holes.

  • Jacob from Shreveport la

    Posted on 9/2/2015 1:28:29 PM

    I have two dvc power acoustik gothic 10" 1000rms 2ohm subs. and one power acoustik razor 1500 mono block class d amp. Should I wire them parrell or series

  • Buck Pomerantz from Crutchfield

    Posted on 9/2/2015 2:22:20 PM

    Jacob, You should wire your subs like this diagram. The terms sued to describe this kind of setup are series-parallel wiring. The voice coils of each sub are wired in series and the two subs are wired in parallel.

  • Phil from Lincolnton

    Posted on 9/2/2015 7:30:03 PM

    So if I am wiring 2 SVC 4ohm subs in prallel. Then my amp will power them as one 2ohm load right? If each sub has an RMS of 250watts, should I buy a 500 watt amp or a 250 watt amp. Thanks

  • Buck Pomerantz from Crutchfield

    Posted on 9/3/2015 9:41:43 AM

    Phil, An amp that can put out 500 watts RMS at 2 ohms will deliver 250 watts RMS to each of those subs, exactly their rating.

  • Michael from brookneal

    Posted on 9/6/2015 12:35:01 PM

    I have a kicker dx500.1 mono block amp hooked to 2-12 dvc 4 ohm boss phantom subs. My amp is 2 and 4 ohm stable. Right now I have the speakers wired to a 4 ohm load and trying to figure out how to wire them to a 2 ohm load so I can get more power to the speakers because my amp is not 1 ohm stable.So what are my best options?

  • Shawn from Brown Deer

    Posted on 9/6/2015 10:38:39 PM

    I just bought a mono rating at 2ohms is 2200W x 1 ch. So do I want 1 or 2, SVC or dvc, 2ohm or 4ohm subs. My amp is 1 ohm stable. Do I take advantage of this? Does 1 dvc 12" 2ohm sub sound same as two SVC 12" 4ohms wired parallel to 2ohm. this is so confusing. I have Boss AR3000D amp ran parallel to 2 12in. SVC 4ohm subs. Sounded real nice, but amp got hot. When I first put in amp I ran speaker outputs + to + and - to - ( 2speakers to one input) 4ohm load. Amp didn't even get warm. I thought amps work better with least resistance? ( lower ohms). Thank you very much. I hope to hear from you soon

  • Albert sanchez from San Diego

    Posted on 9/7/2015 4:57:13 AM

    I have a single 13w7 and have an amp that's is stable at 1ohm at 750rms I was wondering is it would be safe/a good idea to wire the sub down to 1.5 ohm and run it that way or to leave it at 3 ohm (amp is 2 and 4ohm stable also)??? Plz help

  • Buck Pomerantz from Crutchfield

    Posted on 9/8/2015 11:23:17 AM

    Michael, Two DVC 4-ohm subs can only get wired together to form a 1 ohm, a 4 ohm, or a 16 ohm load.

  • Buck Pomerantz from Crutchfield

    Posted on 9/8/2015 12:02:42 PM

    Shawn, An amplifier works harder, gets hotter, and puts out more power to a low impedance load than to a higher one. 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.

  • Buck Pomerantz from Crutchfield

    Posted on 9/8/2015 12:47:01 PM

    Albert, That subwoofer is a DVC 1.5-ohm sub. That means it can only get wired as a 0.75-ohm or a 3-ohm load. Sounds like you need to leave it at 3 ohms.

  • Drew Reynolds from San Carlos

    Posted on 9/15/2015 6:48:53 AM

    I have 2 of the power acoutstik mofo 122x subs and am planning on wiring them in series to a boss ar4000d amp. if i wire them in series they should give me an impedance of 2 ohms at which the amp can push 3000 watts rms. does that sound correct or am i doing something wrong?

  • Buck Pomerantz from Crutchfield

    Posted on 9/15/2015 10:28:31 AM

    Drew, I think what you're describing is called parallel-series wiring: each sub has its voice coils wired in parallel, making each sub 1 ohm, and then the two subs get wired in series, forming a total impedance of 2 ohms. You can achieve the same results with series-parallel wiring like this.

  • dave from walcott

    Posted on 9/15/2015 4:21:04 PM

    Hi I have a Memphis 15 pr12d4v2 12" dvc 4 ohm sub I have it wired at 2ohms and its bridged to my Memphis sr1.250 amp question is if this sub is at 2 ohms already and then bridged (doesn't the bridge lower the load again???) So would that be a 1ohm load in the end?

  • Buck Pomerantz from Crutchfield

    Posted on 9/16/2015 9:13:57 AM

    Dave, You bridge amplifier channels together, not subwoofers. That amplifier is a mono, one-channel amp so there aren't two channels to bridge together. If you wire the subwoofer's voice coils together to form a 2-ohm load and then wire the sub to your amplifier, the amp sees it as a 2-ohm load.

  • cody from springfield, mo

    Posted on 9/17/2015 4:12:40 AM

    I am wondering if you can wire a dual 4 ohm voice coil sub down to 1 ohm by wire it like this.. take + to +, - to - then taking a + to - then running the + and the - that hasn't been ran together to the amp which would be a + off one voice coil and the - off the other voice coil. thanks

  • Buck Pomerantz from Crutchfield

    Posted on 9/17/2015 9:41:31 AM

    Cody, A single DVC 4-ohm sub can only be wired as a 2 ohm or an 8 ohm load. Any wiring added to that shown in these diagrams will short-out the sub, and send the amp into protection mode.

  • Ben from Brainerd, MN

    Posted on 9/27/2015 11:51:32 PM

    Hi. I just bought an Alpine APCL-15001D amp and I have 2 Rockford Fosgate 12" Punch P3 ?-Ohm DVC Subwoofers and I'm not sure what ohms the subs are rated for as I bought them from someone w/o a manual. How would I be able to figure out the ohms of the subs? and how should I wire them once I figure that out?

  • Buck Pomerantz from Crutchfield

    Posted on 9/28/2015 11:04:51 AM

    Ben, Alpine doesn't make an APCL-15001D amplifier, but Audiopipe does. Your subwoofers should have their model numbers printed on labels on the back of the magnets, either P3D2-12 or P3D4-12. The number after the D is the impedance of the voice coils. If you have the DVC 2-ohm models, you'd wire them to your amp like this diagram. If you have the DVC 4-ohm subs, like this.

  • Yannick from Montreal / Canada

    Posted on 9/28/2015 12:32:04 PM

    Hi, which setup is most powerfull with that amp ; Sound Ordonance M-1500 (300 watts RMS x 1 at 4 ohms or 500 watts RMS x 1 at 2 ohms) 1- One 12" sub single voice coil 4ohms (thats mean speaker will received 300w RMS) or 2- One 12" sub DVC wired final at 2ohms (thats mean to me , each voice coil will received 250RMS). or 3- One 12" sub single voice coil 2ohms ( mean spk will received 500RMS) *Considering same brand and same watt speaker Is there a difference between number 2 and number3 ? Thanks!

  • Buck Pomerantz from Crutchfield

    Posted on 9/28/2015 2:25:24 PM

    Yannick, Your second and third options will be louder than the first - 500 watts will play louder than 300. Nominally, the second and third options should play the same - the amp sees a 2-ohm load and tries to output 500 watts through it - but the two subs may have different sensitivities. That's a specification that describes how loud a speaker plays with a standardized input. Two subs of the same brand and power rating may have different sensitivities and one will play louder than the other.

  • Zack

    Posted on 9/28/2015 11:10:40 PM

    Hi, I am wanting to run one Kicker 10CVX 15" subwoofer with dual voice coil overs would it be better to have a 2 ohm or 4 ohm sub and what size amp would I need to run this sub?

  • Buck Pomerantz from Crutchfield

    Posted on 9/29/2015 1:57:28 PM

    Zach, An easy way to do this would be to get the DVC 4-ohm model and plan to wire it to your amp as a 2-ohm load like this. Then look for a mono subwoofer amplifier that can put out between 750 and 1500 watts RMS at 2 ohms.

  • Andrew from Phoenix

    Posted on 10/1/2015 10:36:07 AM

    I have two alpine swr-12d4 12" subwoofers. They are dvc 4 ohm subwoofers. I'm having trouble matching to an amp that can power both of them. The rms is 1000 watts. I do not understand impedence and have read all about them. Any help appreciated.

  • Buck Pomerantz from Crutchfield

    Posted on 10/1/2015 11:34:07 AM

    Andrew, For those subs, look for an amp that can put out between 1500 and 3000 watts RMS at 1 ohm or at 4 ohms. Crutchfield carries a few that qualify, including the highly rated Rockford Fosgate Power T1500-1bdCP subwoofer amplifier.

  • john

    Posted on 10/3/2015 12:00:39 AM

    I have a volfenhag zx5162 1200w amp which is a 2 channel 2 ohm amp. I have 2 kicker cvr 12" subs and each one has a final impedance of 2 ohms. Looking at the manual that came with the amp, it says I can bridge the subs and it'll be stable between 4 and 8 ohms. Am I understanding this correctly?

  • Broderick from Fresno

    Posted on 10/3/2015 4:13:26 PM

    Hello Buck, I was hoping if you can help me clarify something. I brought the MTX Audio Terminator Series TNE212D 1,200-Watt Dual 12-Inch Sub Enclosure, Key Features Dual 12" Subwoofers Single 2O Enclosure 1200W Max Power, 800W Peak Power, 400W RMS it states 2 ohm and since it's two 12's i guess that's 2 ohm for each speaker?? I have a Majestic Electronics 1200 watt 2 channel bridgeable amp Specs RMS Power (Watts Per Channel)500 x 2 @ 4 ohms. Since my two 12's speaker box only has one power input port instead of two, can i run them with my 4 ohms amp and can i bridge them? Thanks for any feedback you can give.

  • Buck Pomerantz from Crutchfield

    Posted on 10/4/2015 10:27:35 AM

    John, I think your Kicker CVR subs are the DVC 4-ohm models, right? Crutchfield's Subwoofer Wiring Diagrams offer this way to wire that gear together, wherein each sub is wired as an 8-ohm load, and the two subs wired in parallel create a final 4-ohm load for the amp. And yes, the amp's instructions mean that when the amplifier gets bridged to one-channel mode, it can safely drive loads from 4- to 8-ohms.

  • Buck Pomerantz from Crutchfield

    Posted on 10/4/2015 10:53:51 AM

    Broderick, The specifications of that dual subwoofer is that taken altogether, measured at the one speaker-terminal, the final impedance is 2-ohms (total, not each) and the power rating is 400 watts RMS. That amplifier can't drive a 2-ohm load when bridged, but you may be able to rewire the subs so you can use the amp. If the two subs are SVC 4-ohm models, you can wire them to your amp like this diagram. If they're the DVC-2-ohm models, like this.

  • Broderick from Fresno

    Posted on 10/4/2015 12:46:53 PM

    Thanks for the response Buck, I appreciate it. So i can run the subs at a 2 ohm load unbridged on my 4 ohm amp? i don't know if its 2 ohm stable? I've tried to look up that specific info to no avail. Are most 4 ohm amps 2 ohm stable? Thanks again and have a Great Day!

  • Buck Pomerantz from Crutchfield

    Posted on 10/5/2015 12:12:24 PM

    Broderick, I also could find out nothing about that amplifier, but as far as I know, almost all unbridged car amplifier channels can drive a 2-ohm load.

  • John from Sacramento

    Posted on 10/7/2015 5:04:50 PM

    Hello Im still very new to wiring things correctly and what not. My question is how would I wire my Coustic 1200 Db D-block amp to my 2 sony xplod xs-L1200B 12" subs ( 200w , 800w peak power) ? Your a life saver if you can help.. thanks man

  • Buck Pomerantz from Crutchfield

    Posted on 10/8/2015 10:05:12 AM

    John, You should wire that gear together like this diagram. Wiring is only half the game: don't neglect setting the amp gain properly.

  • Steven ORiley from Lakeland

    Posted on 10/18/2015 9:35:27 PM

    Hello, I have been collecting items for a system. I currently have 2 MRX-M110 Alpine amps and one sws12d4. I have a box to hold 2 12s under the rear seat of a Silverado. Will 1 MRX-M110 be too much for the 1 sws12d4? I still haven't purchased the other sub, I am not opposed to purchasing 2 subs that would be compatible, but the box depth is only 6.25 I believe. Thanks for your help.

  • Buck Pomerantz from Crutchfield

    Posted on 10/19/2015 12:26:38 PM

    Steven, That amplifier may be a bit much for that one sub, but it will work, especially if you keep the amp gain set low. For running two subs, you'll find a better choice would be two SWS-12D2 DVC 2-ohm models wired like this.

  • Steven from Lakeland

    Posted on 10/19/2015 10:16:24 PM

    Thanks for the response. I am trying to understand ohm with the various wiring abilities. If I were to run 2 SWS-12D4s with only 1 of my MRX-M110 amps, what would be the correct way to wire that? What would the benefits be of running two 2 ohm subs vs two 4 ohms. Thanks again.

  • Buck Pomerantz from Crutchfield

    Posted on 10/21/2015 2:19:55 PM

    Steven, You can wire those two DVC 4-ohm subs to that amp like this, and the amp will be able to put out 800 watts RMS to the pair of subs. Two DVC 2-ohm subs wired to that amp like this, will get 1100 watts RMS. Amplifiers put out different amounts of power through different loads (ohms). The Alpine MRX-M110 amp actually lowers its output when confronted with a 1-ohm load, so a 2-ohm final load results in the most output power.

  • Dennis

    Posted on 10/31/2015 5:52:04 AM

    I have a Sony xplode hooked up to 1pioneer sub. Was working perfectly but got home and as I backed into the driveway the green light turned red.... What do I do? Is the amp fried? Or what could be the problem? PLEASE HELP!!!!

  • Larry navarette from Nutley nj

    Posted on 11/1/2015 2:40:04 PM

    Hi, I just bought a kicker compR dvc 4 ohm 800 watt max, 400 watt rms, and I bought a 1100 watt boss amplifier, how do I wire this and is the amp to big, it says that the amp puts out 413 rms watts at 4 oh

  • Buck Pomerantz from Crutchfield

    Posted on 11/2/2015 1:20:02 PM

    Dennis, First thing I'd do is check all the wiring for loose connections or shorts. If you bought your gear from Crutchfield, you could call Tech Support for free help troubleshooting your system. Their toll-free number is on your invoice. If you purchased your equipment elsewhere, you can still get expert Crutchfield Tech Support - 90 days-worth for only $30. Click on this link for details.

  • Buck Pomerantz from Crutchfield

    Posted on 11/2/2015 1:56:34 PM

    Larry, You can probably safely wire that gear together like this. Although that amplifier claims to be able to put out 825 watts RMS into 2 ohms, which may seem like too much for a 400 watts RMS rated sub, I think you'll be okay, especially if you set the amp gain for no distortion.

  • Brian tapanes from Hialeah

    Posted on 11/8/2015 12:27:53 PM

    Hey buck, I have a 3000 watt monoblock hifonics amp, I have 2 audio pipe 750rms/1500 subwoofers what how can I wite them even if it's pushing a little more then 750 that's fine! The amp keeps going to safe mode after 20 min thanks bud

  • Brian from Hialeah

    Posted on 11/8/2015 12:35:28 PM

    The amp is 3000 watts at 1ohm

  • Buck Pomerantz from Crutchfield

    Posted on 11/9/2015 4:02:19 PM

    Brian, Not knowing that amplifier's true RMS ratings at various impedances or those subwoofers' coil configurations and impedances 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.

  • Roberto Ortiz from Las Vegas

    Posted on 11/14/2015 12:02:23 PM

    Would I be able to run a Hifonics brutus brx 1100.1d to two kicker compr dvc 2 ohms 40cwr122 and change the impedance switch on the subs to 1 ohms? ? or can i use the hifonics brutus x1000.1d

  • Buck Pomerantz from Crutchfield

    Posted on 11/15/2015 4:43:26 PM

    Roberto, Those two subwoofers can only get wired together to form a total impedance of ½ ohm, 2 ohms, or 8 ohms. The amps you mention can both handle them wired as a 2-ohm load, but would probably overheat and shut down with the ½-ohm load. A 2-ohm load can be created by either wiring two 1-ohm subs in series, or two 4-ohm loads in parallel. If you aren't familiar with the difference between series and parallel wiring, just set those switches to 4 ohms and wire the subs like in the provided link.

  • alain from united states

    Posted on 11/19/2015 2:53:37 PM

    i have a sony XM-2200 GTX2 amp and a hifonics HFX12D4 single subwoofer, my buddy was able to "bridge" it for me, but I was wondering if there was any way possible for me to get more power out of my amp to sub ? I went to 2000 century here in akron and they said they were unable to help me due to the 2 to1 channel, is what they're saying true?

  • Buck Pomerantz from Crutchfield

    Posted on 11/19/2015 3:29:07 PM

    Alain, Not knowing exactly what your car audio dealership said nor exactly how your friend wired your system makes it hard to say what's going on. My guess would be they found the two amp channels bridged together and running that subwoofer wired at 2 ohms, and so rather than spend a lot of time and energy rewiring your system to operate safely but with no additional power possible, they deferred. The only way I can see to wire that gear together is to un-bridge the amp and run each of the sub's voice coils with an amp channel. That way, the amp could send the sub its RMS ratings - 200 watts per coil, 400 watts RMS total. Just make sure each channel of the amp gets the exact same input signal - use a Y-cord.

  • Rukudzo from Charlotte

    Posted on 11/27/2015 11:24:33 PM

    I have two JL W7-v3 12's rated at 3-ohm's each with a Memphis 16-st1500d amp (2-ohm minimum as labeled on amp). It is strongly suggested that that particular amp not be run any lower than 2-ohm.My question is can the two subs listed be run at 2-ohm? With said amp, I'd get the most power out of it.

  • Buck Pomerantz from Crutchfield

    Posted on 11/30/2015 1:05:47 PM

    Rukudzo, Two 3-ohm subwoofers can only get wired together to form a 6-ohm or a 1.5-ohm load.

  • aaron fries from Glen carbon il

    Posted on 12/3/2015 8:15:02 PM

    Okay I'm sorry im sure you have answered lots of these questions but i have one. I have two 4 ohm subwoofer svc. Rms is 250 peak is 500. They are Rockford fosgate. Have a mono amp 500.1 Rockford. At 4 ohms at the amp it pushes 300 watts at 2ohm its 500watts. What would be best?

  • Buck Pomerantz from Crutchfield

    Posted on 12/4/2015 10:49:21 AM

    Aaron, If the specs you quote are correct, you can wire your gear together like this. That way the amp will be able to put out 500 watts RMS total, 250 to each sub, which matches their RMS ratings exactly.

  • Scott from Chicago

    Posted on 12/4/2015 11:19:24 AM

    Hello my name is Scott and I don't know much about this stuff at all. I have bought a sub box with 2 10in pioneer TS-W252R already in the box and a boss 2 channel r6002 amp and not sure how to wire the box to the amp. And I have a pioneer radio to put in to and don't know how to wire the amp to the radio. Any help is appreciated. Thank you

  • Buck Pomerantz from Crutchfield

    Posted on 12/4/2015 2:38:55 PM

    Scott, The only way I can think of to safely connect your gear together is to open the sub box, disconnect the two subs from one another, and wire them to separate channels of the amp like this. Installing a new receiver and connecting it to an amp is a bit too involved to fit in this Comment section. If you bought any of your gear at Crutchfield, you could call Tech Support for free help installing your system. Their toll-free number is on your invoice. If you purchased your equipment elsewhere, you can still get expert Crutchfield Tech Support - 90 days-worth for only $30. Click on this link for details.

  • Zack

    Posted on 12/5/2015 1:08:33 AM

    Hi, I have 1 12 inch cvr compvr kicker (4 ohm model) and I have a "Planet Audio AC1500.1M ANARCHY 1500-watts Monoblock Class A/B 1 Channel 2 Ohm Stable amplfier" also I have a "hifonics BRX1116.1D Brutus 1100W amplfier" I was wondering which amp would be better to run this subwoofer and how should I wire it in? Thanks

  • Buck Pomerantz from Crutchfield

    Posted on 12/7/2015 9:56:12 AM

    Zack, In my opinion, the second amp you mention would match that sub better than the other. Wire it like this diagram.

  • Jag from Round Lake Beach

    Posted on 12/7/2015 12:04:27 PM

    Hello, I'm trying to decide between Ts-w3003d4 and the JL W1V3 subs. I'll be installing these in my existing 12" system. The subs are sitting coil up in my trunk in a custom moulding. No enclosure. What would be the best amp to drive these? I am thinking of wiring the 2 coils in series to make them 1 ohm subs while attaching to the amp in parallel, making the amp see them as 2 ohms. Can this work well? If my thinking is correct, I can get the max RMS power from my subs (as they will be running with 1 ohm resistance), while not trying to push the amp to handle 1 ohm but maybe an amp that can safely handle 2 ohms, 1000 RMS if i go with the pioneer and 600W RMS with the JL's (however, they are rated as 2 ohm 300W RMS subs). If my subs are rated as 2 ohm, can I safely connect them in series to make them 1 ohm? Does this double my RMS power handling? OR would it be safer to connect them in series as 2 ohms each and in parallel to the amp so the amp sees 4 ohm? Thanks for all your help!

  • Buck Pomerantz from Crutchfield

    Posted on 12/7/2015 4:34:53 PM

    Jag, I'm afraid you have the meanings of the terms "series" and "parallel" mixed up. When two inductors get wired in series (one after the other), you add the impedances; when parallel (positive to positive, negative to negative), you divide by two. Secondly, you're asking about two very different kinds of subwoofers which have very different requirements for amplification. The Pioneer sub is DVC (dual voice coil) 4-ohm rated for 600 watts RMS operation. That JL Audio sub comes as a SVC (single voice coil) 2-ohm or SVC 4-ohm model rated for 300 watts RMS. If you're choosing the subs before an amp, you'll have to settle on exactly which model and how many (two?) before being able to spec out which amp will work. This article should help.

  • Dennis from Florida

    Posted on 12/15/2015 7:28:59 PM

    Hello, I have a jl audio 500/1 and I have a kicker comp 12 in 500 watts subwoofer which I have to replace because my amp blew the last one I had but I'm afraid to put the new one on cause I was told I needed a dual coil subwoofer and the one I have is a single coil , I'm on the crutchfield sit to buy one but I don't know it buying a dual coil is going to solve my problem or not please help

  • Joe from Tupelo

    Posted on 12/20/2015 3:15:08 AM

    I have a db drive k9 12(1000w rms/2000w max) It's a 2 ohm dvc wired in series 4 ohm to amp. Or I can wire it parallel to 2 ohm to amp. Amp is planet audio 1500.1(700 rms) @ 4 ohm but is 2 ohm stable. Which wiring would be better?

  • q from hodges

    Posted on 12/20/2015 11:31:25 AM

    Is there a way to way to wire 2 d2 subs n a d1 sub on a monk block amp..

  • Buck Pomerantz from Crutchfield

    Posted on 12/20/2015 11:33:10 AM

    Joe, A single DVC 2-ohm sub can only get wired as a 4-ohm load or a 1-ohm load. That amp will work safely with the 4-ohm setup.

  • Joe from Tupelo

    Posted on 12/20/2015 5:56:42 PM

    Ok cool. Thanks Buck!

  • Buck Pomerantz from Crutchfield

    Posted on 12/21/2015 11:45:50 AM

    Q, Even without knowing what a d2 or a d1 sub is, I can tell you that connecting them together is probably not a good idea. When different impedance subwoofers are wired together to the same amplifier the lower impedance sub will get twice the power of the higher impedance sub, possibly under-powering one while over-powering the other. That's a recipe for blowing subwoofers. Use separate amps for your different model subs.

  • William from Jacksonville

    Posted on 12/27/2015 8:11:36 PM

    I have 4 8inch kicker comp s speakers... i have 2 wired series and the other 2 wired series and have them up to a pioneer gm -d 9601 mono class d.... with the 2 hooked up series its 8 ohm and the otber 2 the same.... can i wire them parallel and still be ok

  • Buck Pomerantz from Crutchfield

    Posted on 12/28/2015 3:33:35 PM

    William, If those subs are the SVC 4-ohm models, you can wire them all to that amp like this, where all four subs are wired in parallel together.

  • Jordan from Atlanta

    Posted on 1/10/2016 10:04:04 PM

    I recently bought a massive audio summo 12 dual 4ohm sub. Would the massive audio n3 have enough power for it? What about the n4?

  • Buck Pomerantz from Crutchfield

    Posted on 1/11/2016 2:17:11 PM

    Jordan, I can't recommend an amplifier I'm unfamiliar with which Crutchfield doesn't carry. While the N4 model may work with that sub wired like this, I'm not at all confident that it will be able to produce its claimed output power.

  • jmon from providence

    Posted on 1/17/2016 3:47:02 PM

    can you help me i have 2 of these with the 1 ohm 4 ohm switch on the sub the box says 40cwr122 its a dvc dual voice coil i need help finding an amp for these for around 200.00 i dont know what ohm and all of that i want a kicker or jl or good name brand i dont know if i need a special amp to run 2 subs []

  • jimmy mccarty from Dos Palos ca 93620

    Posted on 1/21/2016 2:53:32 AM

    Hey how's it going I have to earthquake 10 inch subwoofers they are 4 ohms and single coil I wired them down to 2 ohms to get more out of my amplifier because it is 2 ohm stable I did not really notice a difference though I think it could be my the battery or maybe I need to just do the big 3 upgrade my lights dim real bad too sometimes and I noticed my amplifier use to cut off on certain songs the amplifier would go into protect mode and that was 4 ohms now I have it at 2ohms

  • Buck Pomerantz from Crutchfield

    Posted on 1/21/2016 2:09:42 PM

    Jimmy, I can't give you a wiring recommendation without knowing exactly what amplifier you have. It sounds like you have a 2-channel amp bridged to a 2-ohm load and it can't handle it. (Just because an amp's specs say it's 2-ohm stable doesn't mean it's stable at 2 ohms when bridged - most 2-channel amps are not.) For headlight-dimming, check out this article for help with that.

  • Andrew M from Massapequa

    Posted on 1/25/2016 9:06:00 PM

    I'm a little confused... If I have 2 SVC 4ohm subs rated 275w RMS each..and my wiring options are 1) to a 2ch amp 4ohms each channel, the amps rms should be close to 275w.2)but on a single channel (mono/bridged) in paralell seeing 2 ohms. should the amp be rates 275W rms at 2ohms with both subs in parallel each seeing the same wattage, or do i need an amp capable of producing 550w on a single channel seeing a 2ohm load? I think I typed all that out correct haha. Im confused about what amp rating I should look for when wiring in parallel, normal rated rms for one sub, or double it. Thanks!

  • Royce from Abilene

    Posted on 1/26/2016 1:24:02 PM

    What amp would be best for a Kicker 15" CompVR?

  • Buck Pomerantz from Crutchfield

    Posted on 1/26/2016 2:11:53 PM

    Andrew, Two SVC 4-ohm subwoofers get wired to an unbridged 2-channel amplifier like this, because 2-channel amps are rarely stable for 2-ohm loads when bridged. They'd connect to a mono, 1-channel amp like this, where the two subs are wired together in parallel, halving the total impedance. Whichever way they're wired, each sub will receive one-half of whatever wattage the amp can put out. So if your amp has a total output of 550 watts RMS, each sub will receive 275.

  • Sebastian from San Antonio

    Posted on 1/31/2016 11:43:02 PM

    I have a 3000 watt audio pipe that pushes 2837 watts, close to rating. Any ways I had 2 12 L7, each 750 rms, thing blew, was thinking bout getting 2 15 L7s , since their rms is 1000 and peak 2000 each , was wondering if it was safe or if I should invest in louder subs , any suggestions

  • Buck Pomerantz from Crutchfield

    Posted on 2/1/2016 3:41:33 PM

    Sebastian, If you blew two 12-inch subs with that amplifier, I'm sure you can blow those 15-inch subs as well, although their power ratings match the amp better. You have to set the amplifier's gain properly to not allow distortion, in order to safely run subwoofers.

  • Marvin

    Posted on 2/2/2016 1:38:31 AM

    Hi. I have a wharfedale wh s10 home theater sub that just doesn't kick it for my setup.. Do u think it will handle a 4ohm replacement like jl 10w3v3-4? I'm still planning to use the amp built in to it.. Tnx n advanced

  • Buck Pomerantz from Crutchfield

    Posted on 2/2/2016 1:30:56 PM

    Marvin, That home theater subwoofer's internal amplifier is rated for 215 watts. If that's not loud enough for you with the driver it was designed to play with, then changing that driver out for one rated at 500 watts RMS will probably play even softer. Car audio and home theater gear rarely play well together.

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