How to Match a Car Subwoofer and Amplifier

Need help knowing how to match a car subwoofer and amplifier? Tired of your friends constantly asking you to pair a sub and amp for them? Watch this video (or send it to a friend) and learn about the three major points of matching subwoofers and amps:
1. The Total RMS of the System
2. The Final Impedance of the System
3. Types of Amplifiers

In this video we use the 750 watts RMS Kicker CVX (CompVX) subwoofer and the Kicker ZX750.1 amplifier (750 watts RMS @ 2 ohm) as an example of a perfectly matched subwoofer and amp.

[oscarrios]

Thumbs up to sonicelectronix for the BEST costumer service out in the business

[PanzerIV]

Man I really love these small videos. I learned so much in a very small amount of time. Short and sweet as we say.

[SonicElectronix]

Yes that would work just fine! Two of the channels can go to your speakers and the other two channels can be bridged to the subwoofer if your sub wires to a 4 ohm load.

[SonicElectronix]

It is our pleasure, thank you for the awesome compliment. :D

[thatracingkid]

This is the best guide you're looking for if your building an amplified subs. All of my questions are answered in one vid!! Very helpful. But one thing is missing, It's not updated :D I had two 12" Kenwood KFC-W3013PS subs. I also ask myself if my subs are fake and never existed in the list, and searched the year model of mine and discovered that KFC-W3016PS is the updated version. Damn.

[SonicElectronix]

There are tons of impedance's of course, but in car audio applications the most commonly used impedance's are 1, 2 and 4 ohms. The average person will be aiming to power their woofers within that range.

[danieldean]

Excellent, concise, and informative video. This is exactly what I was looking for, thank you for posting!

[SonicElectronix]

Yeah, a monoblock and push any number of subs as long as the impedance and power match up. For example, you can wire three dual voice subwoofers to a final impedance of 3 ohm. Then you just make sure that the RMS for the subs (all added together) match the amplifier.

[thegoodlifemia]

been searching for amplifinder for the last week im glad that you guys took the time to make that it has helped me out a lot i've been trying to figure out which amp to run these two 12" alpine RW12D2 subs with.... think i got it now, thanks again.

[stylesdonta]

Thank you.. I have already done the big 3 and upgraded the wiring but I haven't replaced the alternator yet.. You guys are great by the way

[SonicElectronix]

If he has 2 Dual 4 ohm subwoofers, they will wire to a 1 ohm load. The amplifier we selected will output a bit more power then his subwoofers need, which will give him the headroom during dynamic bass peaks, so his woofers will always have the power they need.

[MsTripplesix]

This was very helpful. Short and to the point. My sub went out suddenly *tear. And before I take it to someone to see whether or not I need a new one, I have started looking up new subs and thus amps. I don't think my amp was ever strong enough for my sub but many shops don't inform, they just take your money. : (  Thanks for this.

[SonicElectronix]

That MRX-M240 will work just fine if you have the subs wired to a 2 ohm load. However, you will need to upgrade your alternator, Big 3, and wiring to actually get that kind of power out of your system.

[patinetaegr]

I have 2 power acoustik amps. a CPT4-1200 for my speakers, and a RZ1-1500D for 2 Boss D12F. and the sound is crisp and loud . I'm very satisfied with the choice of this brand.

[SonicElectronix]

They would all wire to a 2 ohm load at the amplifier, so you need an amplifier that outputs around 1200W RMS at 2 ohms. For your price range, you will have to settle for one that outputs about 900W at 2 ohms, like the Precision Power PPI S1300.1D

[SonicElectronix]

It is better to have an amplifier with more headroom, so when the intense notes hit the amp can output the power for that split second. But, as you said, it must be tuned correctly so as to decrease the risk of blowing the woofer.

[SonicElectronix]

Four Dual 4 ohm subwoofers wire to a 0.5, 2, or 8 ohm load. We recommend an amplifier that outputs about 2000-3000W RMS at 2 ohms. Each woofer is rated for 800W RMS but that might be a bit much for those subs.

[SonicElectronix]

It is not a problem at all. The box is more important actually. If you want the full potential of the sub then you could add more power.

[SonicElectronix]

Yes, you will need an amplifier for these speakers considering they are 90 watts each. Anything above 50 watts you should amplify.

[michaellaroche]

I was trying to use your Amplifinder on your website and when I tried to put in the model number it wouldn’t let me type it in. It just lets me select something but there is nothing to select.