Skip Navigation

Car amplifier buying guide

Get the wattage and number of channels you need

In the 1950's, I'd take the family television's vacuum tubes down to Willow Grove Radio and TV Repair, check them with the giant tester machine, buy new replacement tubes, and reassemble the repaired television, so my mom and dad could enjoy their precious, respectively, Dean Martin and Red Skelton shows. In the 1960's, I studied radio and electronics at the Franklin Institute in Philadelphia. After college, in the early 70's, I joined a rock 'n roll band as the soundman, learning how to operate the electronics that make music sound good. Then, I worked in a music store in Austin manufacturing, installing, repairing, and operating sound systems and components for recording studios, nightclubs, and touring bands. I moved back to Charlottesville permanently in 1984 and opened a little demo recording studio. I also attempted to put to practical use the creative writing degree I had picked up along the way. In 2006, I finally came to my senses and got this job at Crutchfield where they actually pay me to ramble on, rant, and explain the things I love about music, electronics, and getting good sound.

More from Buck Pomerantz

Helix A2B

The Helix A2Br amplifier delivers competition-level power with style

Why add an amplifier?

If you want your music to be loud, amplifiers are definitely part of the picture. But whether you run your system wide open or softly enough for conversation, a power amplifier will breathe life into your music, bringing out all of its excitement and detail. Here are a few of the main benefits of adding an amp:

  • Better sound quality — Adding an amplifier gives you a clean power source that can drive your speakers without straining. Unlike an amplifier built into an in-dash stereo, an external power amp isn't limited by the space available — it can be designed without compromises. That means your music will sound cleaner and more defined at all volume levels.
  • Power for upgraded speakers — A factory system or an in-dash receiver may not do justice to your upgraded speakers. If you're adding high-quality aftermarket speakers or component systems to your vehicle, they may require more power for peak performance than your existing in-dash receiver can provide.
  • Powering a subwoofer — Subwoofers require significantly more power than a brand-name or factory in-dash receiver can provide. A separate amp is a necessity.
Sound Ordnance M100-2

The compact Sound Ordnance M100-2 amplifier fits almost anywhere.

I want to add some oomph to a factory system

Standard factory car stereos usually have no more than about 10 watts RMS maximum output power per channel, in spite of what the car dealers advertise. That's usually not enough power to overcome road noise without sounding shrill. A great way to upgrade your sound system without changing the factory look of your vehicle is to get a factory system upgrade. Each of these systems include an amplifier and other sound processing gear custom-designed for your specific vehicle that will vastly improve the sound and leave the interior looking stock.

A more economical way to upgrade your sound system without changing the factory receiver or speakers is to get a compact 4-channel amp to boost the power for your front and rear speakers. The Alpine KTP-445U Power Pack and the Clarion XC1410 4-channel amp are two examples of amplifiers that are small enough that they can be installed behind many dashboards and powerful enough to dramatically increase the quality and clarity of your sound. Both of these amps, as well as many others available at Crutchfield, feature inputs that can handle the high-level signal from the vehicle's factory speaker wiring. Look for an amplifier with "speaker-level inputs" as one of its features if you want to add it to a factory system.

DIY Installation Help

Amplifiers don't come with the wiring you need to connect them to your stereo.

Wiring kits provide everything you need to send signal and power to your amp.

You'll also need speaker wire to send signal from your amp to your existing speakers.

A capacitor stores reserve power and delivers it when your amp needs it most.

And don't forget the extra hardware you might need for a truly professional installation: battery terminals, power distribution hardware, fuses, etc.

I want my aftermarket speakers to really sing

All aftermarket speakers, especially component sets, benefit from being fed more power than what a factory or even an aftermarket receiver can put out. Among a speaker's published specifications you will find its RMS (or "continuous") power rating, usually as a range — "5-60 watts RMS power range" for example. The higher number represents the approximate driving power at which the speaker will play at its fullest and best according to the manufacturer. Actually, most speakers get rated very conservatively and can take a lot more power than their rating (as much as 150% of the rating is usually safe). But they really won't sound good unless they're able to get at least 3-quarters (75%) of that power rating.

So, if you already have aftermarket speakers, find out their top RMS rating. Pairs should be the same, but if your front and rear pairs are slightly different, it's okay — use the lower rating. Multiply that number by 75% (0.75) — this is the minimum RMS wattage the amp you're looking for should have per channel. Now, multiply that rating number by 150% (1.5) — this is the maximum output power per channel you'll want for your amp. Don't worry if you can't find an amp small enough to match speakers with low power ratings. You can always set your amplifier's gain low enough that it won't ever attain its full power, so your speakers will be safe.

Many people like their music with a strong front stage and don't even use rear speakers. A 2-channel amplifier will be the practical solution when you only need to power a single pair of speakers. But if you like rear-fill sound in your car and want to retain front-to-rear fade control, get a 4-channel amp — one channel for each speaker.

There are some other amp configurations to consider for when you want to include a subwoofer in your system. A 3-channel amp can take care of a single pair of speakers plus a sub quite effectively. A 4-channel amp can also be employed to run a pair of speakers and a sub — two channels bridged together to run the sub and the other two to drive the speakers. This gives you the option for future expansion of your system, allowing you to later change the amp over to run four speakers and add a separate amp for the sub.

Alpine PDR-V75

Alpine's PDR-V75 5-channel amp can power your front and rear speakers along with a sub.

You may want to consider a 5-channel amplifier that can power your entire system from one convenient and compact package. Some manufacturers offer 6- and 8-channel amps. These were designed to run 3- and 4-way active systems, with amplifier channels dedicated to one driver each, like a tweeter or a midrange speaker, and a couple channels bridged together to run a sub.

I plan to get new speakers along with my new amp

When building a system from scratch, one of the first questions you should ask yourself is, "How loud do I want this to be?" Car audio systems don't necessarily need massive amounts of amp wattage to sound loud, but having a lot of power available is good for the "headroom" of a system, the ability to deliver an emotionally impactful burst when the music asks for one. There's also the interior size of your vehicle to consider.

Sound Ordnance M4050

A Sound Ordnance M4050 4-channel amp is an economical way to amplify your system.

If you drive a compact coupe or hatchback, a sports car, or a small-cab pickup, for instance, a 50 watts RMS per channel, or smaller, amp will probably do fine, overcoming road noises and adding clarity to your music. Look for speakers with a top RMS rating of at least 35 watts RMS (using the 75%/150% rule) to go along with the amp.

For larger vehicles and for those who just want more volume, you should step up to at least a 75 watts RMS per channel setup. A difference of 5 or 10 watts either way won't make any difference and probably can't even be heard. Matching speakers will need to each have a top RMS rating of 50 watts RMS or more.

Those of you who want even greater impact and eye-popping volume out of your system will want to go for an amp with 100 watts RMS or more per channel. Get speakers or component sets rated for at least 75 watts RMS each.

I'm just adding a subwoofer

Bass is much harder to amplify than the rest of the spectrum of sound — that's why there are so many large and beefy subwoofer amplifiers out there dedicated solely to reproducing bass. Mono, 1-channel amps are designed for subwoofers, will work with a wide range of impedances, and have tone controls and filters specifically made to help reproduce bass. Although many 2- and 4-channel amps can be bridged to increase their power enough to run a sub, they often then can't handle the sub's low impedance, and overheat or go into protect mode.

You want the bass to musically blend and be well-balanced with the rest of your system, so, here's a good rule-of-thumb guide to sub power:

  • If you're using your car's factory stereo — 50 to 200 watts RMS of power for the bass will do nicely.
  • An aftermarket receiver — you might want 200 to 300 watts RMS of power for your sub.
  • Amplified speakers with around 50 watts RMS per channel — plan on 250 to 500 watts RMS for bass
  • A 100 watts RMS or higher per channel system — you'll want at least 1,000 watts RMS for your sub.
JL Audio XD600/1v2

JL Audio's XD600/1v2 subwoofer amp puts out up to 600 watts RMS for bass.

You'll need to impedance match your sub amp and sub. It would be a shame and a waste of money to buy a couple of subwoofers and an amplifier, for instance, only to find out that the amp can't run the subs because wired together, their impedance would be too low for the amp to run without overheating. Remember, if you're adding a sub to a factory system, get a subwoofer amp with speaker-level inputs, so it can get its signal from the factory speaker wires.

Need more help?

Browse our entire selection of car amplifiers. If you need more help, give our Advisors a call at 1-888-955-6000. They have the knowledge and experience to help you find an amp that will meet your needs.

  • Debbie Parrott from Issaquah, WA

    Posted on 4/25/2015

    Replacement amplifier for a 2004 Lexus ES 330 Mark Levinson sound system with navigation?

  • Buck Pomerantz from Crutchfield

    Posted on 4/27/2015

    Debbie, Crutchfield does not carry a direct replacement for that factory amplifier, nor a harness to bypass it. Our research shows that the Mark Levinson amplifier connects to the vehicle's databus, so if an aftermarket amplifier were installed with all new wiring, you'd probably lose features like door chimes and navigational audio. You can call and check with one of our expert sales advisors to see if there is a solution out there for you, but I don't know of one besides getting a replacement amplifier from Lexus. Sorry.

  • Byron from PA

    Posted on 5/4/2015

    My amp in my 2007 Jeep Commander quit working. As I was replacing the head unit anyhow, I didn't have the amp replaced but it was bypassed and now only the rear speakers work. It still sounds good, but I am a sucker for good sound! It has the Bose system in it - six speakers (4 front, 2 rear). Can anyone tell me what amp is included with the market Bose sound system? I am trying to figure out a price to have it replaced as well as what amp to get.

  • Buck Pomerantz from Crutchfield

    Posted on 5/4/2015

    Byron, Your vehicle's electronics and factory sound system are intricately connected. Replacing the stereo requires a specific combination of wiring interfaces in order to keep everything working right, and the loss of your front speakers could be a side-effect of that. If you have the info, find the model numbers for all the installation hardware and harnesses used to install your new stereo, then give our advisors a call. Even if you don't have all those details, they probably can help you get what you DO need to get everything working again.

  • LB from nevada

    Posted on 5/10/2015

    i have an after market Beats speakers with a sub, i would like my music to be loud and clear can i just and an amp to it.

  • Buck Pomerantz from Crutchfield

    Posted on 5/11/2015

    LB, If you are talking about Bluetooth speakers, then no, you cannot add an amplifier. If you are talking about car speakers, then it would depend on the year, make, model, and quality of the stock system (whether it's premium or not). Some vehicles may require specific factory system bypass harnesses in order to work, but generally speaking adding an amplifier to a car audio system makes the music louder and clearer.

  • Phillip Easterday from Knoxville, TN

    Posted on 5/20/2015

    Please educate me!?.... I am planning on putting a fairing on my Vulcan 1600 motorcycle...the fairing has 4, 4" holes for speakers and a single din space for a stereo... the radio I would like to get is a SONY MEX-M70BT which indicates 55 watts x 4 channels peak and RMS 17 watts x 4 channels... I am discovering I am limited on speaker selection by the size of the hole...4".. but I have found Boss CH4230 3 way speakers that indicate 225 watts peak and 115 watts RMS.. If I go by the math 17 x .75=12.75 & 55 x 1.5=82.5...which seems low for these speakers... but 115 x .75=86.25 & 225 x 1.5= 337.5.. which means I guess I need an amp that ranges from 86.25 to 337.50 watts? the amp cant raise the wattage anymore than it is rated...so say a radio that puts out 20 watts and a amp that puts out 50 watts, means you get 50 watts.. not 70 watts...correct? So, can you please tell me what rating of amplifier I need or if I need one at all... because my head hurts from trying to see through this, thank you for your time Respectfully Phillip

  • Buck Pomerantz from Crutchfield

    Posted on 5/21/2015

    Phillip, You don't necessarily need an amplifier - you may find the receiver's output power adequate for those speakers. If you do want more volume, I would suggest looking for a marine or other power sport-suitable 4-channel amplifier with no more than 100 watts RMS per channel. Only use RMS specs. "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.

  • Randi from Columbus, Ohio

    Posted on 5/27/2015

    The amp in My 07 Acura TL with Navigation keeps cutting out, is there a replacement amp for this unit?

  • Buck Pomerantz from Crutchfield

    Posted on 5/27/2015

    Randi, Crutchfield doesn't carry replacement gear for factory equipment like the amplifier in your Acura (which has 6 channels running 8 speakers). An Acura dealership would probably be able to provide one, but it would also probably be very expensive. I would advise you to search local salvage yards or online for a used Acura amp. My Google search turned up three for sale on ebay right now.

  • Ericthebear from Triangle, Va

    Posted on 6/8/2015

    I have an upgraded factory audio system. It has a factory amp under the passenger seat. I have two 3.5" speakers in the dash, a 6x9 speaker in each door (4 total) and a subwoofer. I want to add a new five channel amp to drive the door speakers and subwoofer, but keep the factory amp to drive the dash speakers, so each speaker has its own channel. The new amp would accept speaker level inputs. The current amp has not low or high pass settings, control was accomplished by having the various speakers have the appropriate pass. Is this a crazy idea? Most installers I have spoken with are downright resistant to this plan. Also, I have replaced all of the factory speakers with 2.3 ohm speakers like the originals. Most installers seem adamant at running the new amp at four ohms, even after I point out the speakers are all 2.3 ohm, including the sub. One last Question, would you have any idea as to the mounting depth/width limits on a 2015 Dodge Journey Crossover with the Alpine sound system

  • Buck Pomerantz from Crutchfield

    Posted on 6/9/2015

    Eric, Without knowing the power ratings of your aftermarket speakers, amp, and sub, I have no way of knowing whether or not they'd work together. Identifying the gear by brand names and model numbers helps. Perhaps those installers didn't want to put in a mismatched amplifier that could possibly blow your speakers. Your premium audio system's amplifier would normally get bypassed with a harness when installing an aftermarket amp - but I don't think there is one for your vehicle. This makes connecting your 5-channel amp's inputs a bit problematical, but a line output converter (LOC) that can handle high-level inputs should solve that.

  • BearmeatDC from Triangle, VA

    Posted on 6/9/2015

    I had the amp questions last evening. The speakers are now (4) JBL 963's at 2-100 rms 300 peak, (2) JBL GTO 329's, and planning on a JVC KS-AX3205 amp that provides 50 watts/4 ohm or 65 watts/2 ohm per channel and 300 watts at 2 ohms for the sub. The sub specks are unavailable. If it blows I can replace. Actually I would be ok running it off the factory amp if this is a big issue. I just thought with two amps, every speaker would have a channel. The factory amp is 368 watts total, which drove all six speakers and the sub in the original configuration. So knowing this are my ideas for two amps, at 2 ohms crazy? The new amp has high level inputs so I had thought if the out puts for the four door speakers from the factory amp went to the new one, and the dash speakers ran off the factory amp - all would have a channel. As for the sub in my plan it could move to the new amp or stay with the old one.

  • BearmeatDC from Triangle VA

    Posted on 6/9/2015

    The factory amp does not filter the singles, in the original set up, the door speakers were low pass and the dash speakers high pass.

  • ErictheBear from Triangle VA

    Posted on 6/9/2015

    The JBL GTo329's are 5-25 rms 75 watt peak

  • Buck Pomerantz from Crutchfield

    Posted on 6/10/2015

    Eric, I see no reason why that amplifier won't work with those speakers, though it probably will overpower the factory subwoofer. Again, you will have a problem getting input to your new amp, unless you use a device like an AudioControl LC6i to lower the factory amplifier's output to line level for the new amp's input.

  • Pete Martinez from Humble TX

    Posted on 6/14/2015

    hello I have a Kicker Comp shallow (Kicker 40CWRT121) mount speaker installed in my truck. I am using a Rockford Fosgate amp P500.1 which is a mono amp. I keep blowing my sub. This is the third sub I had to replace. I am wanting to know help on selecting a different amp. I know the amp I currently have installed is a little too much for this sub. Could I get what is best amp to help me push this subwoofer. Thanks in advance

  • Buck Pomerantz from Crutchfield

    Posted on 6/15/2015

    Pete, I'm not sure exactly which amplifier you have, but if it's a Rockford Fosgate Punch P500-1bd, then it's capable of putting out 400 watts RMS to a 2-ohm load. That subwoofer is a DVC 1-ohm model that can only be wired as a ½-ohm or a 2-ohm load, and is rated for 800 watts RMS. The amp is not too powerful for that sub, in fact the opposite is true. I suspect what's happening to you is that you're under-powering the sub and driving the amp into clipping trying to get loud bass out of your system. That's what's blowing your subs, I think. A better amp to drive that sub would be the Rockford Fosgate Prime R1200-1D, which would deliver 800 watts RMS to the 800-watt rated sub when wired to 2 ohms.

  • Buck Pomerantz from Crutchfield

    Posted on 6/22/2015

    Brandon, In my opinion, the simplest and most cost-effective way to add bass is to get a powered subwoofer with speaker-level inputs and just add it to an existing system. As for your other questions, 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. For immediate help, you can contact them via phone or chat.

  • Jose from Bradenton fl

    Posted on 7/10/2015

    I have some 12' prv midrange speakers they're 1000rms 2000max which amp would be best for them i have 8 of them

  • Buck Pomerantz from Crutchfield

    Posted on 7/11/2015

    Jose, If this is for a PA system, then a couple of Crown XTi 6002 power amplifiers will do nicely. Wire two speakers in parallel per channel. If it's for a car however, I don't know of any vehicle electrical system that could support such a high power requirement (over 700 amperes), even with extra batteries and high-current alternators.

  • Carlos Gonzales from Kenosha, Wi

    Posted on 7/11/2015

    I want to hook up a sub with 2 10in speakers and I have a 4 channel 400 watt amp,and my car has a 4 speaker system. What do I need to hook this up?

  • Buck Pomerantz from Crutchfield

    Posted on 7/13/2015

    Carlos, Not knowing exactly what amplifier or subwoofers you have make it impossible to give advice on how to wire them together. Most people use their 4-channel amps to drive their four car speakers and get a separate subwoofer amp to run that.

  • Zeyad from Middle East

    Posted on 7/18/2015

    Hello, I'm planning to buy two of P126DVC Phantom 12-inch 2300-watt subwoofer, and i don't know which amplifier should i buy for the subwoofers. Please help

  • Buck Pomerantz from Crutchfield

    Posted on 7/19/2015

    Zeyad, I was going to recommend the Rockford Fosgate T2500-1bdCP, but I see that you're not in the U.S. and I don't know what amps are available in your country. Crutchfield is only licensed to sell gear in the United States and Canada. Sorry

  • George Spotts from Jenkintown, PA

    Posted on 7/24/2015

    Hello. PLEASE HELP!!! I have 6.5" (180 watt peak) infinity reference speakers in my front doors and 6x9" (300 watt peak) infinity reference speakers in the rear deck. Would the Rockford Fosgate R400-4D (400 watt) amplifier be too big?? I don't want to damage my speakers. Should I have purchased a smaller amp? Thanks for your help.

  • Buck Pomerantz from Crutchfield

    Posted on 7/24/2015

    George, That amplifier is not too strong for your speakers. Almost every aftermarket speaker can take 50 watts RMS. You should never use peak specs - always use RMS numbers.

  • robert L henry jr from lancaster

    Posted on 7/25/2015

    can you mix brands say i have pioneer everything but then use a boss amplifier or can that effect quility

  • Dustin Berrong from Fort Walton Beach

    Posted on 7/26/2015

    I am trying to make an ammo can boombox, and am having a little trouble. What kind and size of amp should i run if i plan on using 4 6inch kicker speakers? i am using battery power if that matters.

  • Buck Pomerantz from Crutchfield

    Posted on 7/27/2015

    Robert, Although some manufacturers claim that their components work best with each other, I don't think there's any evidence for that, and mixing brands will be okay.

  • Buck Pomerantz from Crutchfield

    Posted on 7/27/2015

    Dustin, Check out this article to see how we made a boombox in a cooler. Your project should be very similar. You'll need to pick an amp that'll fit in your ammo can and fortunately for you Crutchfield has a good selection of compact 4-channel amplifiers to choose from.

  • Mike from Fairfax Station VA

    Posted on 8/1/2015

    I want to replace the amp on my 2001 BMW X5. Is this something a DIY guy can do with miminal wireing experience?

  • Buck Pomerantz from Crutchfield

    Posted on 8/2/2015

    Mike, If you have minimal experience with car wiring, you should consider having a professional installer replace your BMW's factory amp with an aftermarket amp. There is no amplifier bypass harness available and seeing as the factory amplifier runs 10 speakers, you'll probably need multiple amps being fed from multiple outputs from the factory receiver.

  • carl from cincinnati

    Posted on 8/5/2015

    I was wondering i wanna buy a amp and subwoofer and I believe if im reading right that a mono amp would be best to power that subwoofer however i have two subwoofer speakers in one speaker box so would that mean i need a two channel amp to power both speakers? thats in the one box? and one more question i believe my regular car speakers are good since there bose so i wouldnt need them for bass since i got the sub woofers i could just use them for high frequencies sounds so basically they could just be hooked up to my receiver and they will be fine? and the reason why I ask that is because I want good hard hitting shake a building bass but I also wanna hear my music clearly through the bass I hope I explained my question im not the best writer thank you

  • Buck Pomerantz from Crutchfield

    Posted on 8/6/2015

    Carl, A mono amplifier can run as many subwoofers as it has the power for. If you already have two subwoofers and want to get an amplifier for them, you must first identify each sub's coil configuration, impedance, and RMS power rating, before figuring out what amp can run them. And only after you install it will you know whether or not the bass you like will overpower the rest of your music.

  • Brian from United States

    Posted on 8/8/2015

    I got a Dual media marine head unit with two 6.5 speakers 240 watt system what size amp should i use

  • Kyle Fulkerson

    Posted on 8/9/2015

    The Kenwood amp I'm looking at has 40w RMS per channel with 4 channels and then a fifth channel at 500w for a sub. I am not getting a sub yet so I'm assuming I disregard the fifth channel. The front and rear Kicker speakers I want are 75w Nominal and 100w nominal, respectively. Will this amp provide enough power for the four speakers? (All RMS ratings are for 4ohm)

  • Bryan from Somers

    Posted on 8/9/2015

    Hello, I'm planning on getting 2 alpine type r 12 inch subs @ 1000rms max each, now I'm looking at amps and I found a pyramid amp 2ch 1500wmax per ch. Now this amp is 500rms peak over the rated 1000 of the sub now I'm not sure if it is this amp is cea certified or not. Do you guys think this amp will be too much for those 2 subs?

  • Buck Pomerantz from Crutchfield

    Posted on 8/10/2015

    Brian, Generally speaking, any aftermarket speaker will sound good when driven by a 40 to 50 watts RMS per channel amplifier. If you like your music loud, go with an amp that can put out 75 to 100 watts RMS per channel

  • Buck Pomerantz from Crutchfield

    Posted on 8/10/2015

    Kyle, That amp should be fine with those speakers. If it proves to not play as loud as you want, you can always upgrade to a more powerful amplifier.

  • Buck Pomerantz from Crutchfield

    Posted on 8/10/2015

    Bryan, When you plan a system, you need to use the RMS wattage ratings only, never peak ratings. It does seem like a 3000-watt amp should overpower two 1000-watts subs, but the first number is a peak rating and the second is an RMS spec. In reality, that 75 watts RMS per channel amplifier will severely under-power those 1000 watts RMS subs.

  • Mervin from Trinidad

    Posted on 8/23/2015

    I interested in the orion hcca 2000 series amplifiers. The 2000.2 and 2000.4 a four and two channel amp. Please reccommend if these amps deliver what they promise and would you reccommend them or another brand.

  • Buck Pomerantz from Crutchfield

    Posted on 8/24/2015

    Mervin, Crutchfield doesn't carry that brand of amplifier and I don't know of anyone who's tested one to see whether it made rated power or not.

  • Partha sarma from Hyderabad

    Posted on 8/27/2015

    HI,I am planning to buy aftermarket speakers for my suzuki swift, India version. I am planning to get the JBL -GXA644SI amplifier and JBL GTO 950 SI in the rear tray and Infinity PR6500CS as the front door speakers. Can you please help me my telling whether the amp will be able to support the set up?

  • Buck Pomerantz from Crutchfield

    Posted on 8/28/2015

    Partha, That amplifier's 60 watts RMS per channel should work fine in your vehicle with those speakers.

  • Loupua from lahaina

    Posted on 9/1/2015

    I have a 2015 Nissan Frontier. Do I have to change my radeo to a deck in order to hook up a subwoofer? Or can I just leave it as it is because it sounds really great

  • Buck Pomerantz from Crutchfield

    Posted on 9/2/2015

    Loupua, A great way to improve the sound in your ride is to add a powered subwoofer that has speaker-level inputs. That way, you can get the sub's input signal from the rear speaker wires and won't need an aftermarket receiver to get your bass.

  • Boogy512 from Austin

    Posted on 10/12/2015

    I want to replace the factory speakers in my 2012 Chrysler 200 sedan (with Boston Acoustic Speakers) with JBL GX series speakers. Do I need an amp? What type of amp should I get?

  • Buck Pomerantz from Crutchfield

    Posted on 10/12/2015

    Boogy512, You can certainly replace your speakers without adding an amplifier - your car's Boston Acoustics system already includes a 6-channel amplifier. You can further improve the sound later by adding a stronger amp. I suggest leaving your dash 3.5" speakers run by the factory amp and getting a 4-channel amplifier with speaker-level inputs to run the other speakers. When you're ready for that upgrade, give us a call and one of our Advisors will help you get the right amp for you and your car.

  • Brad from Loveland

    Posted on 11/3/2015

    I'm Looking t upgrade my system. Im thinking the Alpine MRX-M110 amp with two Rockford Fosgate P3-2X12. I can wire each individual sub to one ohm, will i be able to wire them into series as well to get up to the two ohms that the amp is rated for for 1100watts. Do you think that is going to be enough power for the two 600rms subs?

  • Buck Pomerantz from Crutchfield

    Posted on 11/3/2015

    Brad, The Rockford Fosgate P3-2X12 is a dual enclosure loaded with two P3D4-12 DVC (dual voice coil) 4-ohm, 600 watts RMS rated, 12" component subwoofers, wired together for a total 1-ohm impedance and 1200 watts RMS rating. Two DVC 4-ohm subs can only get wired together to form a 1-ohm, a 4-ohm, or a 16-ohm load, so you can't rewire them to 2 ohms. That amplifier has a current-limiting feature that allows it to only output 800 watts RMS when wired to a 1-ohm load, a bit too little for that sub, but it'll work. Another amp to look at would be the Rockford Fosgate R1200-1D, which would be able to put out 1200 watts RMS to that subwoofer. However, if you actually were looking to power two P3-2X12s, then you'd need an amp at least twice as powerful as that.

  • Chandan from Mumbai

    Posted on 11/17/2015

    Hi. I have Blaupunkt Helsinki 220 Bt HU in my hatchback. Could you please suggest a compatible Amp and Speakers? Thanks.

  • Buck Pomerantz from Crutchfield

    Posted on 11/17/2015

    Chandan, Unfortunately, we're only licensed to sell gear in the United States and Canada. I don't know what car stereo equipment or even what kind of vehicles are available in your country. An online search ought to bring up at least one car stereo dealership somewhere near you. Sorry I can't help.

  • Selrisitai from Livingston

    Posted on 11/22/2015

    I have 150 RMS, 300 watt peak power speakers. Would an amplifier with LESS than 150 RMS work, or does it have to be at least 150 RMS?

  • Buck Pomerantz from Crutchfield

    Posted on 11/23/2015

    Selrisitai, Speaker RMS power specifications (never use peak ratings) are there for you to use as a general guideline so you won't damage the speaker by sending it too much power. Your 150-watts RMS rated speaker will work best with an amp that can give it between 100 and 200 watts RMS, but you won't hurt it by giving it less.

  • graham weis from boise

    Posted on 11/27/2015

    Alright so im entirely new to this whole subwoofer installation process and before I but my own I was wondering what channel amp I would need for my car. I have a 2002 jeep liberty with an aftermarket radio and 4 kicker speakers that replaced the stock ones in the doors. Im interested in buying a 12' subwoofer for the back of the car, and need an amp for it. My question is do I need a 4 channel amp for each of the speakers plus the sub, or can I get a monoblock amplifier for the sub only since I've replaced the speakers/ radio? I would love to have some advice on this as I'm hoping to buy my subwoofer fairly soon. Thank you.

  • Brandon from Ashland, KY

    Posted on 11/30/2015

    I have a Wet Sounds Ultra 10 Speaker Bar and a Wet Sounds SS65 Sub. I need a cost effective waterproof amp for the sub. It is 4 ohm impedance, 250 RMS, 500 Max. What are my options? Thank you.

  • Alexander Hrabe from Crutchfield

    Posted on 11/30/2015

    Graham, you certainly can just add a monoblock amp to power the sub. If you need any recommendations, just give us a call, and take a look at this article about pairing amps and subs.

  • anthony santos from myrtle beach

    Posted on 11/30/2015

    I have (2) 250watt audiopipe Mid Frequency Car Loud Speakers along with a random 1000 watt subwoofer what kind of amp should I run with them

  • Brandon Bland from Independence

    Posted on 12/9/2015

    I have a 97 civic sedan. I just want two twelve inch subs. What amp and speaker combo would be good for at least 1000 watts. I also want an amp on my 6.5 and 6x9 inch speakers

  • Jesus from Elgin

    Posted on 1/24/2016

    I have one pair of Infinity REF-075TX 3/4 Inch Textile Dome Tweeters. In the front doors JBL GTO628 6.5-Inch 2-Way Loudspeaker and in the rear a pair of JBL GTO928 6-Inch x 9-Inch 2-Way Loudspeaker. Will a 4 ch amp be enough power. Havent installed the speakers yet need to know asap. I already have 2 ch amp kenwood 1000W powering 2 12in Kenwood Kfc-w3013ps 12" 4 Ohm Performance Series Car Subwoofer with 2400 Watt Peak / 800 Watt RMS. Not really sure how to run two amp on one car would 5 or 6 ch amp be my best shot?

  • Nasir Malik

    Posted on 1/24/2016

    I have Rockford Fostgate T1693 coaxial for rear and Polk Audio DB 6501 components at front in my corolla 2013. I I want to Install Memphis MR 480.4 amp or cerwin wega v 6000.4. Is that sounds OK ? Please suggest which amp is better between these two.

  • Buck Pomerantz from Crutchfield

    Posted on 1/25/2016

    Jesus, You certainly could use a 4-channel amplifier to drive your rear speakers with two channels and the front speakers and tweeters wired in parallel to the other channels. Especially if you don't try to send them crazy amounts of power. Those tweeters are only rated for 45 watts RMS. You could also do the same with a 5-channel amp, using the 5th channel for your subs.

  • Buck Pomerantz from Crutchfield

    Posted on 1/25/2016

    Nasir, Sorry, I can find out nothing about those amplifies, and I won't recommend any amplifier I'm unfamiliar with which Crutchfield doesn't carry.

  • Miranda from Tucumcari

    Posted on 1/27/2016

    Hello. I have two JL Audio 12" subs (W0v3) in my 2007 Ford F150 single cab. I have a Pioneer amp that says 1000 Watts. I'm really looking into getting a better amp from JL Audio. Which one would you recommend? Thank you.

  • David farer from Margate

    Posted on 1/30/2016

    I'm upgrading my speakers in my 15 Ram 1500 crew cab. Can you help me figure out what I need? I'd like to keep my stock (non alpine) stereo and add an app or two and two subs. I've already replaced the dash speakers with... kicker Dsc35 (80w/20rms) And the rear doors with.... Kicker Dsc693 (360w/90rms) And going to replace front doors with kicker ds65. What size kicker amps and subs would I need for a nice clean sound with hard deep bass? Would you also know the wire harness that I need to hook an app or two to the factory head unit? Thanks.

  • Mike from Aurora

    Posted on 1/30/2016

    I have chosen 2 front 80 watt RMS 4 ohm speakers. I possibly will be adding rear speakers (same RMS) at a later time. Would a 4 channel amp supplying 75 watt RMS @ 4 ohm per channel be sufficient? My other 4 ch amp choice would be a 150 watt RMS @ 4 ohm per channel, is this too much? Basically comes down to price, the setup will be on a motorcycle as well. Thanks.

  • Buck Pomerantz from Crutchfield

    Posted on 2/1/2016

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

  • Buck Pomerantz from Crutchfield

    Posted on 2/1/2016

    Mike, Either amp will probably work fine - it really depends on how loud you want to play your music. Whichever amp you get will have to have its gain set properly to not allow distortion, so even that higher-powered amp will be okay to use.

  • ambrosia from lakeland

    Posted on 2/6/2016

    I have KICKER C15 15" 1200W Dual 4-Ohm Subwoofers Vented Sub Box , BOSS PV3700 Phantom 3700-W Class A/B 2-8 Ohm Stable 5 Channel Amp and Kenwood Digital Media Receiver with Built-in Bluetooth. For a 2006 cobalt lt (no steering wheel controls) what amp,subwoofer wiring kits would you recommend?

  • Buck Pomerantz from Crutchfield

    Posted on 2/8/2016

    Ambrosia, If you had purchased your gear from Crutchfield, you would have been advised what amp kit to get before completing the sale. That amp's specs call for a 4-gauge amp kit.

  • Chris from plymouth

    Posted on 2/8/2016

    hi there, slightly comfused to say the least, i have a two pairs of speakers that have a rating of 115w/speaker. i am going to use a 4 channel amp so i can wire a pair in the front doors and apair in the rear. what size amp do i need? i have come up with the figures, 115w x 0.75 = 86.25 86.25 x 1.5 = 130w does this mean i need an amp with 4x 130w? cheers

  • Buck Pomerantz from Crutchfield

    Posted on 2/8/2016

    Chris, If each of your speakers has a rating of 115 watts RMS (not peak) you'd figure the smallest power requirement as 75% of 115 for 86.25 watts RMS, and the highest as 150% of 115 for 172.5 watts RMS. What this means is that for best performance, these speakers could use an amplifier with between 86 and 173 watts RMS output per channel. But this is just a guideline for not over-powering your speakers - any amp under 175 watts RMS per channel will work fine.

  • David farer from Margate

    Posted on 2/11/2016

    I have a 15 ram 1500 cc. The box that fits under the back seat only has .65 cu ft of a/s. The app I have is a powerbass Asa3 1000rms.X1@1ohm,700@2 & 400@4. What would be the best speakers between (from my calculations,which could be wrong)350 & 550rms that will give me the deep,clean bass I'm looking for with such a small amount of a/s? I've tried the cvt but it sounded bad. Is this because the minimum a/s for the cat is 1 cu ft and only has .65 before dropping the speaker in?

  • Jerry from East Wenatchee

    Posted on 2/14/2016

    Can I run 2 Lightning Audio LT 1/2" Mylar balanced dome tweeters, 2 MTX Terminator522 Terminator Series 5-1/4" 2-way car speakers and 2 MTX Terminator653 Terminator Series 6-1/2" 3-way car speakers off a 4 Chanel amp

  • Buck Pomerantz from Crutchfield

    Posted on 2/15/2016

    Jerry, Without knowing what amplifier you have, I can't tell if you can safely use it with your collection of speakers or not. A 4-channel amplifier with 50 watts RMS per channel output would probably work, with each channel driving a full-range speaker and the tweeters wired in parallel with whichever of those are the front speakers. Amplifiers with higher output ratings would probably end up damaging your speakers.

  • Samuel

    Posted on 2/19/2016

    Hello there, I have component speakers morel maximo. It is rated 90watt RMS. Which is better between amp with 66 watss RMS per channel or 80 watts per channel (4 Ohm)?

  • Buck Pomerantz from Crutchfield

    Posted on 2/19/2016

    Samuel, Your component speakers will probably sound better with the stronger of those amplifiers.

  • john farley from Dunlap

    Posted on 2/23/2016

    I was wondering if BOSS AUDIO BR1000 Marine Weather Proof 1000-Watt Full Range, Class A/B 2-8 Ohm Stable 4 Channel Amplifier with Remote Subwoofer Level Control would be good for 4) New Kicker 41DSC6934 D-Series 6x9" 720 Watt 3-Way Car Audio Coaxial Speakers.and do I need another amp to run 2 6.75 subs or a 8 inch sub

  • Buck Pomerantz from Crutchfield

    Posted on 2/24/2016

    John, It sounds like you should call us (toll-free number at the top of this page) and talk to a Crutchfield Advisor in order to pick out the right gear for yourself and your particular application and vehicle. And help you choose a subwoofer as well. If you're unfamiliar with the products it really helps to talk to someone who is and who will make sure you get the gear that will fit in your car as well as satisfy your audio needs and make you happy.

  • derrik from west liberty

    Posted on 2/29/2016

    I have a 14' civic si sedan w/navi. I was wanting to get some bass in there and was wondering what would be best and if i could keep my stock radio in there seeing how i have the navi?

  • Chris Ramirez from Los angeles

    Posted on 3/13/2016

    Lets sayy I have kicker ks and 150 rms each speaker but my aml channels only give out 65 per channel will if be fine or i get a differenf amp that gives 100 rms per channel is that fine for my speaker and amp and sounds?

  • Buck Pomerantz from Crutchfield

    Posted on 3/14/2016

    Chris, You'll be fine sending those speakers 65 watts RMS. All that 150 watts RMS speaker spec tells us is that you shouldn't try and send the speaker much over 150 watts or it may get damaged. Low power doesn't hurt a speaker.

  • Chad from Mooresboro

    Posted on 3/20/2016

    Hello, I have a "Power Acoustik" 800/2 Amp. Full Mosfet,Bridgeable,Crossover, HPF/LPF,2 ohm Stable. 800 watt. It's an older amp but still works as it should. I have a Crew Cab Silverado truck with limited space under my rear seat. This amp used to push a 12" sub that I can't use now. From what I've researched,this amp can push three speakers. With limited space I am considering three 6x9 speakers to place under the rear seat in addition to the factory system I already have. Could you please suggest a configuration that would offer a quality sound with a nice bass to compliment. Thank you in advance for your input.

  • Buck Pomerantz from Crutchfield

    Posted on 3/21/2016

    Chad, I know of no safe way to connect three SVC 4-ohm speakers to a 2-channel amplifier that's only stable down to 4 ohms when bridged. Sorry.

  • Chad from Mooresboro

    Posted on 3/26/2016

    Thank you Buck. Then what would you suggest I use with this particular amp?

  • Alex from Woodbridge

    Posted on 3/26/2016

    Hello, I have a Pioneer sub TS-W301R 12. What kind of amp would I need? Or would be best?

  • Nick

    Posted on 4/3/2016

    Hi. I'm currently on the market for an amplifier with good quality as well as decent to good power. I really want to turn up my music loud with no distortion and maintain the mid-bass from the speakers. I have an aftermarket in-dash deck (Pioneer x3700bhs) and a pair of Infinity Reference 6502ix speakers that are each RMS 60 watts on the rear deck, factory doors in the front, and alpine tweeters with a crossover in the dash. I eventually will get component speakers in the front if I can find a pair that produces really good mid-bass like my factory speakers. I'm looking at the Alpine MRV-F300 and Rockford Fosgate R400-4D amplifiers. Which one would overall suit my needs? Any other suggestions pertaining getting different speakers, component speakers and other amplifiers is fine. Thanks.

  • brad from Abbott, tx

    Posted on 4/6/2016

    I have a 2009 single cab Chevrolet work truck we have updated the receiver with Sony XAV-68BT A/V Receiver with Bluetooth, with JL Audio Evolution C2-650 6.5" Component Speaker System in the doors and Infinity Kappa 462.11cfp 4x6" Coaxial Speaker Pair in the rear, I would like to add a sub and an amp, but not sure the best way to configure. Would a 5 channel amp be best or possible a powered sub and a 2 or 3 channel amp for other speakers, the sound is very hollow now no bass at all and there is a lot of road noise in the truck partly because it has plastic flooring and door panels, would it be worth the money to add dynamat in the doors, floor and behind the seat,or possibly just dynamat the speakers thanks, Brad

  • Buck Pomerantz from Crutchfield

    Posted on 4/7/2016

    Brad, 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. For immediate help, you can contact them via phone or chat - just click on the phone icon at the very top of this page.

  • Jonah from Evansdale

    Posted on 4/14/2016

    I have a 2002 beetle gls with the monsoon system (Btw the oem rear speakers ARE NOT 4 ohms when i pulled them out to replace them they were infact 2 ohms according to the sticker on the speaker) The speakers i have installed in the front door and rear are 4 ohms the lowest one in power handling is the front speakers 40 watts rms and the rear ones are 50 watts rms. My questions are 1. Can i leave the factory amp to power the ones in the dash and piller and have another amp power the rear and front speakers im looking at one thats 70 watts rms 4 ohms 4 channel (Don't worry i wont let the amp blow my speakers lol) 2. Then i plan to add another amp power a subwoofer that will use the preamp output on the 4 channal amp for signal Im looking at a 500 watt one at 2 ohms and i am curious if this is possibly without overloading the battary/alternator. Also some dude who works in the car audio kind said only 70 watts? like that was a bad thing for a compact car? the factory amp only outputs 25 watts per channel and its loud enough anyway is this possible

  • Buck Pomerantz from Crutchfield

    Posted on 4/15/2016

    Jonah, Your plans for improving your audio system sound okay to me, especially if your car's factory amplifier drives your new speakers with enough volume for your taste. Adding another amp of the size you indicate shouldn't cause issues with the charging system, just make sure you use large enough power and ground wires that are securely connected. (The guy who thought 70 watts per channel wouldn't be enough power in a VW Beetle was probably all ready to sell you a larger amp - four channels of 70 watts plus a 500 watt sub ought to get plenty loud in your car.)

  • Kathryn from Seattle

    Posted on 4/27/2016

    I recently upgraded the factory speakers and HU of my 2012 Forester with mixed results, and I'm looking for some advice, please. I have the Pioneer AVH-X5800BHS HU (built-in amp of 50W x 4), combined with JBL 6.5" Component speakers (Front: 70W RMS, 2.3 ohms - Rear: 60W RMS, 2.3 ohms). I love loud, well-defined sound with good bass, so to add a little kick the sales rep recommended the Alpine KTP-445U Power Pack (up to 45W RMS @ 4 or 2 ohms ). The end result is very disappointing (except the HU). First off, there's HUGE white noise. The installer said it's normal with the Alpine Power Pack, and the only way to get rid of it is to replace my radiator (???) - it seems like a grounding issue. Speakers have no power at all - I can't get past volume like 10 or so out of 30 before distorting the sound. I have good highs, but very poor mid, lows and bass. The speakers sound "boxy." I have a feeling the Power Pack is what's causing the issue here. From what I read above, it sounds like it's not powerful enough to power my 60W/70W speakers, and the 45W Power Pack may actually be weaker than the HU 50W power? What about the white noise, is he right about that, that it's normal? I mean it's loud, I can't imagine anyone would deal with it. How do I correct this install? And what would be a more appropriate Amp if I wanted to give the sound a boost to be able to take full advantage of the speaker power, assuming the HU doesn't have power enough on its own for the speakers? Thank you!!!

  • Buck Pomerantz from Crutchfield

    Posted on 4/27/2016

    Kathryn, It sounds to me that either you're misunderstanding what your installer said or he's doing you a great disservice by not correcting a poorly-executed installation. That power pack should not make any noise - if it does, the installer needs to correct that situation without bringing up nonsense about the car's radiator. That has absolutely nothing to do with the audio system.

  • Kathryn from Seattle, WA

    Posted on 4/27/2016

    Buck, thanks for the answer. More importantly, I was hoping to get some insights on whether the amp is the right one to use with the speakers per the specs I provided? If not, which amp would you recommend that you carry?

  • Buck Pomerantz from Crutchfield

    Posted on 4/28/2016

    Kathryn, That amplifier should work fine for those speakers. I think you've been confused by the Pioneer receiver's claim of a 50-watt output. That's a peak specification, which is useless for system-planning - always use RMS ratings only. That receiver's built-in amp can put out 14 watts RMS per channel. The Alpine power pack more than triples that, and should have plenty enough power to drive your speakers. Again, it seems to me that you need to get your installer to correct a faulty installation. His mention of the radiator affecting the audio should send up a huge red flag that something's not right.

  • Anthony from San Diego

    Posted on 5/3/2016

    Buck, I have a 2001 Toyota 4runner that currently still has stock everything. More than anything else I want to hear the bass in my music as this model was before Toyota put stock subs in 4runners. This car has 2 front tweeters, 2 front door speakers and 2 rear door speakers. I'm a little confused on the specs of the of amp I need (how many channels, and wattage/voltage i will need to make my speakers, tweeters, and the two sub woofers i want to add work? Any help?

  • Anthony from San Diego

    Posted on 5/3/2016

    For clarification I plan on putting 2 12' subwoofers in the car, and i know i need a deck as well.

  • Issac Lopez from Northglenn

    Posted on 5/10/2016

    Will a Alpine PDX at 100rms 2 ohm to infinity kappa components sound better than a cheap rockford amp at 100rms 2ohm. I currently have a cheap rockford amp to my speakers not really happy how they sound, is a better quality amp and maybe more power going to help with sql.

  • Buck Pomerantz from Crutchfield

    Posted on 5/12/2016

    Isaac, I seriously doubt you will be able to hear any differences between two different brand amplifiers of the same wattage, especially in a car. Again, adjusting your receiver and amplifier's gain, and tone controls and filters will do more to improve the quality of your sound than replacing an amp. Unless it sounds bad due to damage.

  • Ron from Dallas

    Posted on 6/20/2016

    Have a 4 Channel stereo need a amp with with a added sub output (just small bass) will a 5 Channel amp power a sub with only front and rear rca`s from deck ???

  • Buck Pomerantz from Crutchfield

    Posted on 6/21/2016

    Ron, Some 5-channel amps, like the Rockford Fosgate R600X5, have an input selection switch, so you can get five outputs (fronts, rears, and sub) using just two or four inputs.

  • Patric from Honolulu

    Posted on 7/9/2016

    I want to replace my current amp with a bigger better one. The sub and amp I have now came together. It's a 8" sub bass tube and a 60 watt amplifier mounted on the sub. So if I want to change amps but keep the same sub, and I already have my whole car wired. Do I basically just disconnect the old amp and connect my new one?

  • Ivanuclear from Garden Grove

    Posted on 7/11/2016

    Hello was wondering if i can get helped for this. I have an amp that says that at 4 ohms it produces 170watt rms x 2 does that mean it is 170 watt rms or 340 watt rms thanks

  • Buck Pomerantz from Crutchfield

    Posted on 7/11/2016

    Patric, Not knowing exactly what amplifier or subwoofer you have make it impossible to give advice on your system. If you want a question answered, you must identify your equipment by brand names and model numbers. I would assume that if your sub and amp came together they match for power handling and impedance capability, and another amp probably would not.

  • Buck Pomerantz from Crutchfield

    Posted on 7/11/2016

    Ivan, That spec means that you have a two-channel amplifier, with each channel capable of driving a 4-ohm load with up to 170 watts RMS of power. The amp probably has a larger total output, driving two 2-ohm loads or a 4-ohm load when bridged for instance, but without knowing the make and model number of the amp, I can't say what.

  • Akasha from Aurora

    Posted on 7/20/2016

    The owners manual for my 3 way component speakers gives a rather vague numerical value for their power handling. 20W-500W RMS /Per Channel, with a nominal impedance of 3Ohms. If I go by the numbers used in this article, I would need ~375W-750W per channel. :-0 Are there amplifiers in production today that could provide that kind of power and still retain a certain value of quality dynamics?

  • Buck Pomerantz from Crutchfield

    Posted on 7/20/2016

    Akasha, The specifications for your speakers tell you that the manufacturer recommends no less than 20 watts RMS and no more than 500 watts RMS for the speakers to play well and sound good. The power amp you choose should depend on how loud you want your sound to be. If you want the speakers to play at their loudest, you'd aim for that 375 to 750 watts RMS per channel amp. Rockford Fosgate's P1000X2 is an excellent example of an amp that'll work well for this application, producing around 400 watts RMS per channel at 3 ohms.

  • howard from Ferndale

    Posted on 7/21/2016

    I recently purchased a Kenwood KAC-9106D mono amp and 2 Rockford Fosgate dual 2ohm 12s, When connecting the amp I used the speaker level connections, from the left back speaker, and right back speaker. When I tested out the sound I was disappointed it played but wasn't very loud, until I messed with the balance, 1 tick to the right speaker and the bass was insane, or 1 tick towards the left speaker and the bass was insane, but with the head unit balanced in the center, I get not much. Should I have only used 1 pair of inline connections, not left and right?

  • Buck Pomerantz from Crutchfield

    Posted on 7/22/2016

    Howard, Try reversing the polarity of one of the speaker wire input connections. It sounds like whenever the two channels play identical signals, they cancel each other out due to a phase difference.

  • Lokesh Raj from Kanchipuram

    Posted on 7/25/2016

    I bought a sony cdx 1150u system for my sedan model car, it say on paper that it has a 55w x 4 channel output i am confused in buying the correct rated speakers. What power rating should i choose for buying the speakers.

  • Buck Pomerantz from Crutchfield

    Posted on 7/25/2016

    Lokesh, That power specification is a peak wattage rating that is basically meaningless for planning a system. Sony receivers typically put out a maximum of about 17 watts RMS. Any aftermarket speaker will work with that receiver, although speakers with lower ratings will work better than those rated higher.

  • Glenn Sieja from Fisherville

    Posted on 8/17/2016

    Buck, I have a rockford pbr300x4 running 2 Alpine SPS- 510 (55 Watt, 87dB, 5.25") speakers in a motorcycle fairing. The sound quality is ok but I don't get enough volume on teh highway. If I turn the gain up, the speakers clip. That doesn't make sense to me because at 75W RMS per channel from the amp, the 55 Watt speakers should be fine right?? Are the speakers good for this amp? If not how do I spec upgrades in terms of power and sensitivity. Thanks!

  • Buck Pomerantz from Crutchfield

    Posted on 8/17/2016

    Glenn, A signal clips when a receiver's output stage is over-driven, or when an amplifier's input stage is over-driven, and has very little to do with the absolute wattage involved. You can easily blow 55-watt rated speakers with clipped 75-watt signals. You should never use an amp gain to increase volume, it should be set so no clipping can ever occur. If your system isn't loud enough for you, get a more powerful amp and speakers. The PBR300X4 isn't bridgeable, so you're wasting two of its channels anyway, driving only two speakers with a 4-channel amp.

  • kenneth

    Posted on 8/27/2016

    hi I have a Sony head unit Model # CDX-GT510 and bought 300W kicker CS65 if I install 4 speakers will I need to add an amplifier to achieve standard sound from the speakers? the specs on the head unit says 23.2W per channel @ 4 ohms and my speakers have 100 RMS and 300 peak power. I tried testing the sound quality and the bass sounds like its distorted/weak when I turn to a higher volume..

  • Buck Pomerantz from Crutchfield

    Posted on 8/29/2016

    Kenneth, Those speakers don't absolutely need an amplifier to work properly, but will sound better when amplified. And if you want bass in your sound, you'll do better by adding a subwoofer to your system than by turning up the bass volume.

  • Oscar from San Antonio

    Posted on 9/7/2016

    My amp keeps shutting off, jl audio 500v2 I have an pioneer head unit, some aftermarket speakers, I believe a 10in sub the previous owner installed. The amp is powering 2 12 inch subs at 400rms each, I know the amp shuts off when there is less than 10v but are the subs too big or is the amp not getting enough power?

  • Buck Pomerantz from Crutchfield

    Posted on 9/7/2016

    Oscar, Amplifiers turn themselves off for protection against low voltage and low impedance loads. Not knowing exactly what gear you have or how it's wired make it impossible to give troubleshooting advice. 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.

  • Ashleeeeee from Adelaide

    Posted on 9/11/2016

    Hi, I have a MB Quart DSC 1000.1 running at 1 ohm: 1000 watts x 1 chan. Powering a alpine type R 12D2. - 1 ohm. Also have a 480w pioneer 4 channel amp (GM-A4604) powering 4 x 80w rms Alpine type S speakers - 4 ohm. Is that okay!?

  • Buck Pomerantz from Crutchfield

    Posted on 9/12/2016

    Ashlee, It looks like that gear matches well together and if it sounds good to you that's all that counts.

  • Will Ballard from Houston

    Posted on 10/20/2016

    Hello, I have a 2007 Ford Taurus SE with 4 Infinity Kappa 682.11cf speaker in it along with the Soundstream SDR-342B which I plan to change out for the Pioneer DEH-X6900BT. I want to purchase an amp for my Rockford fosgate Punch P1S4-10 subwoofer. I'm pretty new to the whole car sound system thing and I am wondering if I need to get an amp to power just my sub or one that could do my subs and speakers? Also, what am would be recommend? price isn't too big of an issue, but I'd like to keep it on the low side.

  • Buck Pomerantz from Crutchfield

    Posted on 10/21/2016

    Will, Those aftermarket speakers will sound better amplified than not, and the sub needs an amp to play. A great way to take care of both would be with a 5-channel amplifier, like the Soundstream Picasso Nano PN5.640D.

  • Mike from Auburn

    Posted on 10/30/2016

    I'm going to be running 2 12 inch Kicker compR subs, 2 rear door kicker 6.5 speakers and 2 front door Kicker 6.5 with tweeters and a pioneer avh-4200nex head unit. I currently have a Kicker 800w 5 channel amp. Would that amp be enough for what I want to run?

  • Buck Pomerantz from Crutchfield

    Posted on 10/31/2016

    Mike, Kicker makes two versions of their CompR subs: 2-ohm and 4-ohm. If you have the 2-ohm version, one of them could get powered by that amp's subwoofer channel (300 watts RMS at 2 ohms). However, two 500 watts RMS rated subs, 1000 watts total, will sound much better with a more powerful amp driving them.

  • Jesus from Juarez

    Posted on 12/1/2016

    Hey buck the kenwood kac-6014d, i see two channels on it but it says its a mono amp and it dosent indicate which chanels you use to brigde, can you tell me which channel or which ports i need to use?

  • Buck Pomerantz from Crutchfield

    Posted on 12/2/2016

    Jesus, Your mono, 1-channel amplifier has two speaker output terminals that are wired together inside the amp. The second speaker output terminal is there 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 the amplifier sees in half. In your case, just wire one plus and one minus terminal to your sub, it won't matter which.

  • Alperen from sarajevo

    Posted on 12/4/2016

    Hello, I have JBL GTO 1260br and i am thinking of buying this Alpine MRP-M500 . My radio is not so good ( Kenwood KMM-257 ). Can I run these troublefree or do I need anything like harness? I read somewhere that this amp needs harness. Can this amp work for this setup? I will be waiting for your reply. Thanks. [Link to KMM-257 removed]

  • UrKungFuNoGood from Roseville

    Posted on 12/4/2016

    I have a 1998 Jeep Grand Cherokee Lmtd ZJ with a ten speaker 180 watt Infinity system. There are speakers in the dash corners, both front and rear doors, and a sound bar on the roof near the lift gate with 2 speakers each side left and right. I have two ideas floating around to replace the factory system. get a four channel amp and add four 3-way door speakers and a sub or the more difficult part which is why I'm writing: Place woofers in the back doors, mid-range in the front doors and swap out the dash tweeters and add a sub. (both sub options will be a compact sealed enclosure to go under rear passenger seat). But with the second option I'm not sure how to plan the amplification side. It doesn't need to be ear splitting loud, but I do like to have it loud often. As I understand you need different power levels for 3-way systems? Like the tweeters don't need as much as the mids, the mids don't need as much as the bass and the bass don't need as much as the sub? What RMS ratings would you recommend for each setup? I am going to remove and sell the rear sound bar in both setups as I don't need it.

  • Buck Pomerantz from Crutchfield

    Posted on 12/5/2016

    Alperen, You can use RCA cables to connect that receiver to that amplifier. Set the preamp output of the receiver to "subwoofer" in its menu.

  • Buck Pomerantz from Crutchfield

    Posted on 12/5/2016

    Ur, When you physically separate the highs, mid-range, and mid-bass drivers, it stretches the sound field between them and ends up with a smeared image and soundstage. You'll get a more coherent sound using four full-range coaxial-type speakers and a sub. But if you still want to go active and power a 3-way system (actually 4-way with sub) with separate amplifiers, you'll need to use the tweeter and speaker specs to get a ballpark estimate on how large an amp to use for each. Then, you'd use crossover settings and amp gains to smooth the response over the whole sonic spectrum.

  • Alex from Charlotte

    Posted on 12/11/2016

    I have a 2000 Jeep Wrangler with a 200 watt Hi Fidelity Ultimate 6-Speaker Overhead Soundbar and two front 4" by 6" kickers and it sounds horrible. All the sound becomes distorted when ever the base comes in even though the sound bar is disingenuous to distribute the sound evenly. When there's little to no base it sounds great. I think putting in a sub and an amplifier will solve the problem but as I'm researching I have become thoroughly confused on what to buy. Could you shed some light on what will work with my current sound system and make it actually sound good?

  • Buck Pomerantz from Crutchfield

    Posted on 12/12/2016

    Alex, Crutchfield has a vehicle profile of your Jeep that offers many suggestions on how to improve the sound. After reading about all the possible solutions, give us a call and talk to an Advisor about what would work best for you.

  • Alex from Charlotte

    Posted on 12/12/2016

    Thank you for giving me this link. It helped tremendously. I know exactly what I need to do now. Thanks again, Alex

  • Joan

    Posted on 12/27/2016

    I bought two set of kicker speakers. One 6 1-2 100 RMS 300 Peak Power and the other 6x9 150 RMS 450 Peak Power. What RMS per channel 4 channel amp should I buy that would power both set of speakers Efficiently

  • Buck Pomerantz from Crutchfield

    Posted on 12/28/2016

    Joan, For speakers with those kinds of specs, almost any 4-channel amp will do. If you like it loud, check out Pioneer's GM-D8604. It'll send those speakers up to 100 watts RMS each.

  • Riley from Jerome

    Posted on 1/28/2017

    I just upgraded my speakers. I bought 2 Kenwood 3 ways with 80 watt RMS and 360 watt max. I'm also running 2 Kenwood components with 80 watt RMS and 280 watt max. My deck puts out 80 watts x4. Do I need an amp, and if so how big?

  • Buck Pomerantz from Crutchfield

    Posted on 1/29/2017

    Riley, A typical factory receiver puts out a total of about 10 watts RMS per channel, and a typical aftermarket receiver puts out about 20 watts per channel, in spite of all their published ratings (which are useless peak ratings). You don't absolutely need an amplifier for your speakers, but I'm willing to bet they'll sound a lot better with an amp running them. Maybe a compact power pack like a Clarion XC1410 will work for you.

  • MPH from Beaverton

    Posted on 1/30/2017

    Hello Buck, I have a '08 Touareg w/Dynaudio. I bought 2 Kicker 6.75" subs 40cwrt672 150 rms 300peak to put in front doors and am looking at the same style kickers in the 8" subs for rear doors. I like that they have shallow mounting depths for the doors as I do not want a subwoofer in the trunk. I would like to keep the stock amp to power everything but these Kickers. Any recommendations on Amps or problems I may encounter doing this? 4 channel the best way to go? I need some bass in my life.

  • Buck Pomerantz from Crutchfield

    Posted on 1/31/2017

    M, If you plan on those rear subs being Kicker CWRT81s, then they will together want an amplifier that can send them around 600 watts RMS at 1- or 4-ohms, while your front subs will work best with about 300 watts RM\S at 2-ohms. The only amp I know of that can do both (approximately) is a Helix Competition A2, which could send 270 watts RMS to the front subs and 395 watts RMS to the rears. A less expensive solution would be to get a couple of Rockford Fosgate P500X1bd mono subwoofer amps.

  • Sal from Chicago

    Posted on 2/27/2017

    I have two 12in subs wired to 2 ohm with an rms of 400 watts each. I have an amp that's putting out 1000 watts rms but I'd like to know if I can go higher.

  • Buck Pomerantz from Crutchfield

    Posted on 3/1/2017

    Sal, If playing 1000 watts RMS through two 400 watts RMS rated subs isn't loud enough for you, you can replace the amp with a more powerful amp and replace the subs with subs that can take that larger amount of power. Give us a call, and an Advisor will help you choose the right gear.

  • Keith from Altamonte Springs

    Posted on 3/23/2017

    I am planning on installing 4 new speakers (2 components: Polk DB6501 and 2 coaxials: JBL GTO638) and one 10" subwoofer (JL 10tw3-d4) in my 2015 Nissan Frontier. I am trying to be somewhat budget friendly between $700-900, but I still want to get a good quality system for all types of music. My main concern is whether the 5 channel amplifier I picked out (Pioneer GM-D9605) will power the whole system properly for casual listening. Also, is it okay to mix and match the brands of each component the way I have? Any help and advice would be greatly appreciated!

  • Buck Pomerantz from Crutchfield

    Posted on 3/24/2017

    Keith, It is perfectly okay to mix brands of gear in a system. Even without hearing the results, I think the equipment you've chosen will sound excellent together. Just be sure, if you're installing the amplifier yourself, to set the front, rear, and subwoofer channels' gain so no distortion ever plays.

  • Dwayne from Jersey City

    Posted on 3/27/2017

    Peace and blessings. I have a 12" kicker 43VCWR122 at 2-ohm impedance with 500w RMS - peak at 1100w. I also have a pair of front speakers Rockford fosgate Punch P132 3.5-inch gama completa Altavoces coaxiales, 17 cm (Pair) at 60w RMS. What size amp should I get? How many channels?

  • Frank Lelievre from Québec City

    Posted on 3/27/2017

    Can i use only 3 out of the 4 chanels in my amp

  • Buck Pomerantz from Crutchfield

    Posted on 3/27/2017

    Dwayne, A good solution for you would be to get a 5-channel amplifier, like a Pioneer GM-D9605, that'll take care of all your speakers and sub from one compact chassis.

  • Buck Pomerantz from Crutchfield

    Posted on 3/27/2017

    Frank, Yes you can.

  • Jonathan from Honolulu

    Posted on 4/11/2017

    I have a 2016 Kia Soul ! (With the infinity sound with navigation). I recently purchased 2 43CWRT102 and planning on purchasing the kicker zxa1200.1 amplifier due to its awesome technology. I have 2 questions first would I be overpowering the speakers with this amp? Do I need any additional equipment to connect to my factory head unit.

  • Buck Pomerantz from Crutchfield

    Posted on 4/11/2017

    Jonathan, I don't know about the model Kicker amp you mention, but if it's like their CXA and KXA series amplifiers it'll put out 1200 watts RMS at 2 ohms. Your subs will be fine as long as you set the amp gain properly and avoid playing distortion. For your installation, in addition to the subwoofers and amplifier, you'll need a subwoofer enclosure or box, a 4-gauge amplifier wiring kit, some speaker wire, and a couple of RCA-to-bare-wire adapters to get speaker-level signal to the amplifier's inputs. Why don't you give us a call so an Advisor can help you get everything you need for your setup.

  • jonathan from Honolulu

    Posted on 4/11/2017

    That was a typo on my part. I meant the new kxa series not zxa. I have a custom enclosure for my car and the rest of the wires I will get from the installer when I get everything installed. Just waiting for someone to carry the amp I desire. Thank you very much for the input about the amp though, that was my biggest concern. Didn't want to overpower and destroy them.

  • Zach from Virginia

    Posted on 4/26/2017

    I have a retrosound Hermosa 25x4 rms channel radio for my 68 Camaro, what speakers/ watts would work with it? the car is loud and I just want the system to sound good that I can hear like normal, has room for a speaker in the dash and two in the back.

  • Buck Pomerantz from Crutchfield

    Posted on 4/27/2017

    Zach, Any speaker that will fit in your car will work with that receiver. Unfortunately, the 1968 Camaro has not been researched by our Product Researchers, so you'll have to measure the mounting holes yourself for size and depth to see if an aftermarket speaker will fit or not. It might be best to look at a Retrosound replacement speaker for the dash location.

  • Ed from Milwaukee

    Posted on 4/30/2017

    I will be installing four 6 x 9 speakers rated at 1600 watts total with a RMS of 120 watts per speaker. What type of amp and how many watts will be needed? Thanks

  • Buck Pomerantz from Crutchfield

    Posted on 5/1/2017

    Ed, A speaker's RMS power rating tells you more about what amp not to get than what amp to get. In your case you shouldn't get an amplifier more powerful than about 120 watts RMS per channel. In other words, almost any 4-channel car amplifier will work. If you're just looking for some sound reinforcement, maybe a compact Clarion XC1410, 50 watts RMS per channel amp will do. Or if you like it loud, check out Pioneer's GM-D8604 at 100 watts RMS per channel.

  • kyle from belleville

    Posted on 6/21/2017

    hi i have Power Acoustik GW3-15 1400W 15" Gothic Series Dual 2 Ohm Subwoofer 3000 watt max whats the best amp i can go with without blowing my subs

  • Buck Pomerantz from Crutchfield

    Posted on 6/22/2017

    Kyle, A single DVC 2-ohm subwoofer rated for 1400 watts RMS will sound best with an amp that can put out between 1050 and 2100 watts RMS into one ohm, like a Memphis Audio PRX1500.1.

  • Zach from Dallas

    Posted on 6/29/2017

    Would a Wet Sounds HT-2 amplifier (165 watts RMS x 2 channel) be too much to power two Wet Sounds XS-650 speakers (100 watts RMS each)?

  • Buck Pomerantz from Crutchfield

    Posted on 6/29/2017

    Zach, That equipment will work okay together. Just make sure you set the amp's gain so no distortion ever plays.

  • Roger from Austin

    Posted on 7/9/2017

    Hello Buck, I have a Kenwood KDC-X7000 DAB, two pairs of JBL GX862 speakers and I will be adding a amp and subwoofer(JL Audio CP108LG). My question is can I get away with adding a small compact amp for the four speakers and a mono amp for the 8 inch sub? Moderate price 5 channel amps are hard to find where I am currently located(UK). I am currently looking at the Pioneer GM-D8604 and possibly a mono amp. Which amps would you recommend? This is for a 2003 Ford Focus.

  • Buck Pomerantz from Crutchfield

    Posted on 7/11/2017

    Roger, A web search shows me at least two online car audio dealers in the UK that sell 5-channel amplifiers, but then I don't exactly know your definition of a "moderate price." If you're looking for a separate amp for that sub - it'll sound best with one that can put out between 188 and 375 watts RMS at 4 ohms, like a Pioneer GM-D8601.

  • Chet from Pittsburgh

    Posted on 7/22/2017

    I have 4 Rockford fosgate p1s with a 500 rms and a 2 channel pioneer amp that's got a 900watt peek what amp would be best for them all to be connected to without overheating or frying the amp should I get a 4 channel amp with a high wattage or go for another route

  • Dailami

    Posted on 7/23/2017

    Is a signal to noise ratio of 75db acceptable in a car amplifier? Would an amp with a frequency response of up to 50 Khz sound better and clearer than another one with up to 35KHz? as far as I know, human hearing reaches 20KHz only, so is the rest an overkill? and lastly I have a 2 channel output on my playback device, can I use RCA splitters to feed 4 or 6 channels to an AMP?

  • Buck Pomerantz from Crutchfield

    Posted on 7/24/2017

    Chet, You should never use peak specifications when planning a system - only use RMS ratings. Rockford Fosgate Punch P1 subwoofers are rated for 250 watts RMS each. Without knowing their impedances (ohms), I can't tell you what amp would work best for them. I can tell you that a 2-channel amp with an output of 900 peak watts probably won't.

  • Buck Pomerantz from Crutchfield

    Posted on 7/24/2017

    Dailami, You probably will not hear the background noise of an amplifier with a signal-to-noise ratio of 75 dB over the road and wind noises your vehicle generates. Likewise, you probably won't hear any differences between amplifiers with super-high-frequency responses. Most multi-channel amplifiers have input selector switches so that a 2-channel input accommodates 4- or 6-channel outputs, for example.

  • Devin from Tacoma

    Posted on 7/30/2017

    I want to run 6 coaxles and 6 tweeters in my car what amp would be best or do i need two amps?

  • Buck Pomerantz from Crutchfield

    Posted on 7/31/2017

    Devin, How to power twelve drivers depends on where they are in the vehicle, which can be wired together and which can't without losing balance/fade function, and what their nominal power ratings are. Give us a call, toll-free at 1-888-955-6000, to go over your options with an Advisor, who'll help you get the right amp for your system.

  • David from chillicothe

    Posted on 8/4/2017

    I have two 175watt RMS 300watt RMS 4-ohm subs. What amp should I get?

  • Buck Pomerantz from Crutchfield

    Posted on 8/5/2017

    David, Not knowing exactly what subwoofers you have make it impossible to recommend an amplifier for them. Subs don't have two different RMS power ratings. If you want a question answered about a system, you must identify the equipment by brand names and model numbers.

  • Alexander

    Posted on 8/8/2017

    So, I've got this JBL GTO-501EZ amp. I'm about to buy JBL GT5-2402BR subwoofer. So this subwoofer works on 2 ohms and has 550w RMS; this amp I have will give 500w RMS if connected to a 2 ohms subwoofer. I've seen a one and only review on Youtube, that guy showed us this amp's power goes above 500w RMS (tested with SMD Amp Dyno, both 2 & 4 ohms impedance). Is this amp perfect for this subwoofer?

  • Buck Pomerantz from Crutchfield

    Posted on 8/10/2017

    Alexander, That subwoofer will work great with that amplifier. Go for it and rock on.

  • Brian from Corpus Christi

    Posted on 8/17/2017

    Hello, I have a 2003 Honda S2000, I would like to upgrade the stock speakers to JL Audio C3-600. Also I'm pairing that with a JL Audio 12W3v3-4 Subwoofer. What amplifier setup should I run? Single or dual amp? I would like to stick with one brand.

  • Buck Pomerantz from Crutchfield

    Posted on 8/17/2017

    Brian, A great way to power two speakers and a sub is with a 3-channel amplifier, like JL Audio's MX600/3.

  • Suresh kumar from Thiruvananthapuram

    Posted on 8/26/2017

    A little help... I have Sony XAV AX100 aftermarket headset in the car now singing on 4 factory speakers. I like to convert it into a component sound set up... 4 mid range speakers (70 RMS each) of 6", 2 or 4 tweeters (value not decided yet) and a subwoofer of 12" with some 300-500 RMS value. My doubts are: 1. Can I use the amp Sony XM-GS4 4channel amp for the 3 level (sub, woofer, tweeter) component sound set up? 2. If the amp is too inadequate can I add a second amp (mono) of 500 RMS to move the subwoofer? 3. Then remains the tweeter. How can I include the tweeters in the amplification process? Can I do the first 2 tweeters a parallel combination with the front speakers and the other 2 tweeters with the back door speakers ? Will this step reduce the front/back speaker's power output? Is it safe for the tweeter as well?

  • Abraham from Miami

    Posted on 8/26/2017

    Hello, I have Alpine´s 6" SPS-610-C (80W) and 6x9 SPE-6090 (75W) . I need an amplifier for these, is the Alpine KTP-445U good enough for my setup? Or should I get a better one? I also plan on getting a Subwoofer, can you recommend any to pair with my speakers? Two amplifiers or one for all? Thank you so much!

  • Buck Pomerantz from Crutchfield

    Posted on 8/31/2017

    Suresh, I think you may want to look into getting two sets of component speakers, each consisting of a pair of matching tweeters and woofers with a crossover. Each set would require one channel of amplification for a tweeter and a woofer. For front and rear speakers, that would require a 4-channel amplifier. If you want to add a subwoofer, you can either add a mono 1-channel sub amp, or start with a 5-channel amplifier. I don't know what car stereo equipment or even what model vehicles are available in your country, so I can't give you a recommendation.

  • Buck Pomerantz from Crutchfield

    Posted on 8/31/2017

    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. For immediate help, you can contact them via phone or chat - just click on the text balloon icon at the very top of this page.

  • Sam

    Posted on 9/5/2017

    I wanna add 4 65 RMS door speakers and 2 10 inch 4-ohm 200 watt RMS to my truck. What would a good amp be to power all of them? Or would it be better to get one amp for the door speakers and one for the subs?

  • Buck Pomerantz from Crutchfield

    Posted on 9/6/2017

    Sam, A great solution for your situation would be a JL Audio MX600/3, capable of sending 75 watts RMS to your front speakers and 400 watts RMS to your subs.

  • John Aaron from Manila

    Posted on 9/11/2017

    Good Day Sir! I want to upgrade the speakers of my Honda City 2016 but still using the factory HU. I have 2 pcs front door speakers (Polk Audio DB652 DB+, 100W RMS 300W peak) and 2 pcs rear door speakers (JBL GT7-6 6.5" 2-Way, 45W RMS 135W peak). If I will use 4 ch amp PIONEER GM-D8604, is there any technical conflict to the JBL speakers since the RMS value of the amplifiers is more than twice? Also, if ever i will use my 2 pcs (or 1 pc) Pioneer Subs (TS-W259S4, 10 inch 1200W max 50-350W RMS) what will be the set-up of the coaxial speakers using the same PIONEER GM-D8604 amps? Really appreciate your reply. Thank you sir.

  • Buck Pomerantz from Crutchfield

    Posted on 9/11/2017

    John, That amp will be fine for your speakers as long as you set the amp gain so no distortion ever plays. If you decide to add a subwoofer or two to your system, I recommend getting a separate subwoofer amplifier. Otherwise you'd lose all balance and fade controls for your different speakers, if you ran four speakers off the front two channels of the amp and the subs from the rear channels bridged.

  • Jon

    Posted on 9/15/2017

    Hello. Just want to clarify some things if what I'm doing is acceptable. I have a 2 ch amp Kenwood KAC-5207 for my car speakers and a 2 ch amp for my subs. For the Kenwood KAC-5207 amp, each channel I connected in parallel the Pioneer TS-G690 speaker 4 ohms 45W rms & Pioneer TS-S20 tweeter 8 ohms 50W rms. Total connected impedance will be 2.67 ohms. Pls advise if there is a need to change. Thanks a lot...

  • Buck Pomerantz from Crutchfield

    Posted on 9/18/2017

    Jon, If you like the way your system sounds, I don't see why you need to change a thing. That amplifier will drive those speakers and tweeters just fine - it won't mind the 2.67-ohm loads.

  • Aaric from Joliet

    Posted on 9/20/2017

    I have 2 12" 8ohm 200w rms woofers and im looking at a 2 channel 400w peak amplifier. If i am correct, if i were to bridge the 8 ohm woofers to 1 channel my amp would have a 4 ohm load and put out roughly 150w of power? Is this accurate?

  • Buck Pomerantz from Crutchfield

    Posted on 9/21/2017

    Aaric, Two single voice coil (SVC) 8-ohm subwoofers rated at 200 watts RMS each will work best with an amplifier that can put out between 300 and 600 watts RMS at 4 ohms. Not knowing exactly what amplifier or subwoofers you have make it impossible to give advice about them, though. If you want a question answered about your system, you must identify the equipment by brand names and model numbers.

  • Tom from Sydney

    Posted on 9/22/2017

    Hi Buck. I recently bought a car with a low quality system in it. Today I upgraded the rear 6x9's with a pair of good quality Pioneer 3 way speakers. (I chose 6x9 because the holes were already cut in the parcel shelf). However, when I play music, there is no bass coming out of them - unless I alter the L-R balace to left side, or right side, then the bass kicks in nicely. But I cannot have bass on equal L-R balance. The head unit is a cheap no name system, and there is no amp installed. Is this the reason behind the issue? It can't handle the output to supply both 6x9 at the same time? Ideally I don't want to install an amp, I don't know how to, and I am not after massive bass. If I upgraded the head unit to a quality brand, would this solve my problem? Cheers Tom

  • Buck Pomerantz from Crutchfield

    Posted on 9/23/2017

    Tom, You are describing what happens when one speaker is 180 degrees out of phase from the other speaker. Reversing the polarity of one of your speakers, switching the positive and negative leads, will solve the issue.

  • Tom from Sydney

    Posted on 10/3/2017

    Lifesaver! Thanks Buck

  • Charles from North royalton

    Posted on 10/11/2017

    Ok Buck. I have four American bass VFL 8D4 subs. I call them my little monsters. They are 800 watt max, 400 watt rms each, DVC 4 ohm. I know I can run them at a 0.5, 2 ohm and I believe 8 ohm. I'm running a 160 amp alternator in my 03 Tahoe. I made a four hole box out of 3/4 MDF, .73 cubic feet per sub tuned to 37 Hz. My issue is what amp should I get? I kinda want to run 2 ohm mono but I see a lot of mono amps with 2 speaker outputs. If I wire two subs in parallel can I put 2 subs on one output each at 1 ohm? Or will the amp get a lower ohm if I do that?

  • Buck Pomerantz from Crutchfield

    Posted on 10/12/2017

    Charles, Four DVC 4-ohm subs can only get wired together as an 8-ohm, 32-ohm, a 0.5-ohm, or a 2-ohm load. A cool and economical amp is Kicker's CXA1200.1, which will put out 1200 watts RMS total, 300 to each sub, wired to your subs like this. Most mono, 1-channel amplifiers have 2 speaker output terminals that are wired together inside the amp. The second speaker output terminal is there 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.

  • Donovan from Yakima

    Posted on 10/18/2017

    I'm wanting to run JL C2-400X speakers in the front and JL C2-690TX in the rear. What would be a good amp to run this setup? Preferably 4-channel.

  • Rodrigo M.

    Posted on 11/7/2017

    Hello, I have a Pionner stereo, 4 Kicker speakers and a kicker powered sub but now I want to add an amp for my speakers, How can I add a 4 ch amp if I'm already using a pair of the rca outputs (rear/sub) for the powered sub?

  • Buck Pomerantz from Crutchfield

    Posted on 11/8/2017

    Rodrigo, You can use Y-cords to get four amp inputs from two receiver outputs, but you'll lose the front-to-rear fader function. A better way is to get a 4-channel amplifier that has a pair of preamp outputs. You'd connect the front and rear RCA outputs of the receiver to the 4-channel amp and then run a RCA pair from the preamp outs to your sub amp's inputs.

Great Gear Giveaway

THE

GREAT GEAR GIVEAWAY

Ask an expert advisor

No pressure, no commission — just lots of good advice from our highly trained staff.

Find what fits your vehicle

 
 
 
 

Can't find your exact vehicle?