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Subwoofer wiring diagrams

Which wiring option will work best for you?

There are many ways to wire subwoofers and amplifiers together. The ideal setup is when subs and amps match their impedance and power capabilities to optimize performance. In this article, we'll help you find the best subwoofer wiring diagram for hooking up your system. 

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Just click on the "AMP" or "SUB" box below, answer a few questions, and you'll be presented with the wiring diagrams relevant to your search. You can find a glossary of terms below the interactive module.

Glossary of subwoofer terms


A Single Voice Coil subwoofer (or svc sub) has two wiring terminal posts, one marked positive and the other marked negative.


A Dual Voice Coil subwoofer (or dvc sub) has four wiring terminal posts, two positve terminals and two negative terminals. The extra terminals give you more options for wiring the speaker.


The impedance of a subwoofer coil is expressed in ohms. Impedance is the amount of electrical resistance, or load, a sub puts up against an amplifier's output. Subwoofer voice coils usually come in 2-ohm, 4-ohm, or 8-ohm impedances. The value is often found printed on the magnet, if you're unsure of what you have.

Series wiring and parallel wiring

These terms refer to two ways of routing the speaker wires to your subs to properly manage the overall impedance load. Whether you need to use a series wiring configuration, parallel wiring, or a mix of both, our diagrams will show you exactly the best way to wire your speakers. 

Note: When you wire dual voice coils and multiple subs together, the resulting total impedance is not always simple to figure out or practical to use.

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Amplifier output

An amplifier will put out more power through a low-impedance sub than it will through a high-impedance sub. But a lower impedance also means more stress on the amp. Some amplifiers can even drive a 1-ohm load safely, and achieve maximum output. Refer to your amp manufacturer or owner's manual to determine whether or not yours can handle a low-impedance load.

Bridged mode

Bridging an amp combines two amplifier channels into one, to get more power. The disadvantage of bridging is that bridged channels can't drive impedance loads as low as they can when unbridged. How to bridge the amp is usually indicated at the amp's speaker wire terminals. 

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All the wires depicted in the Subwoofer Wiring Diagrams are speaker wires. For wiring subwoofers, we recommend using wires of 12- to 16-gauge in size.

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Start building your bass system today

Now that you've seen how to wire subwoofers and amplifiers together, you can knowledgeably shop Crutchfield's extensive selection of subwoofers and amplifiers. We also carry amp wiring kits, speaker wire, RCA cablescapacitors, and much more.

Contact us by phone, chat, or email and an Advisor will help you get what you need. If you want to learn more about amplifier systems, check out our Amplifier Installation Guide.

Last updated 7/20/2021
  • Ryan from Groton

    Posted on 10/8/2021

    Hi there, thanks for the article and diagrams. I understand I need to wire my subs like this - [diagram 2DVC_2-ohm_mono] I have a question... my enclosure has two connections, one for each sub. Would I be able to run a positive/negative wire to each terminal and then bridge each subs +/-, or do the two subwoofers need to be connected + to + and - to -?

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    Buck Pomerantz from Crutchfield

    on 10/12/2021

    Ryan, It depends on how each sub is wired inside its box. If they're each wire as a 4-ohm load, like in the diagram, then you'd wire both subs' positive terminals together or separately to the amp's positive terminal, and the negative terminals the same way. If each sub is wired as a 1-ohm load, then you'd wire the boxes in series: amp positive to sub 1 positive, then sub 1 negative to sub 2 positive, and sub 2 negative to the amp's negative terminal.
  • Greg Philley from Modesto

    Posted on 10/8/2021

    I just recently got 2 12" DVC 4ohm Kicker CVR's and I have an Alpine MRX-M100 Mono Amp....I want to wire these to be 2ohm stable (even though the amp will run @ 1ohm....I don't need it @ 1ohm).....but all I see for wiring is to do a 4ohm or 1ohm.....can you gimme a link to a diagram or something??? If this helps, it's running off a Jensen CAR710 deck.....anything would be helpful.....Thank You in advance....:)

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    Buck Pomerantz from Crutchfield

    on 10/8/2021

    Greg, Two DVC 4-ohm subs can only get wired together to form a one-ohm load, a 4-ohm load, or a 16-ohm load. You know you can turn the volume down on a sub, if the amp makes it too loud and out of balance with the rest of the music.
  • Rick from Orlando

    Posted on 10/7/2021

    Good Day, I recently purchased a 2nd JL CS110LG-TW3 and I would like to add this to my pickup which has a JL RD 1500/1 mono. I want to confirm the wiring of the subs to be series-parallel arrangement to obtain a final impedance of 4ohm. The question is:- 1) Should I wire each sub in a series configuration. 2) Then connect the two +ve of each CS110LG-TW3 to each of the positive of the RD 1500/1 and for the -ve, connect to each of the -ve on the RD as the mono block is already wired in parallel??

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    Buck Pomerantz from Crutchfield

    on 10/12/2021

    Rick, The only safe way to wire those two subwoofers to that amp is as follows: Wire the amplifier's negative output terminal to one sub's negative terminal, wire that sub's positive terminal to the second sub's negative terminal, then wire the second sub's positive terminal to the amplifier's positive output terminal. The result is that the two subs will be wired together in series, presenting a 4-ohm load to the amp, which will be able to send them a total of 750 watts RMS - just on the safe side of their top RMS rating.
  • Austin earl

    Posted on 10/3/2021

    I have a diamond d1000.1 mono amp and want to hook it up to a Memphis car audio 15-m5124d what's the best way to hook it up without blowing the speaker

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    Buck Pomerantz from Crutchfield

    on 10/11/2021

    Austin, There is no way to hook-up that gear together without blowing the sub to smithereens.
  • Danny

    Posted on 9/29/2021

    I am looking at buying the Match UP 7DSP and the module for RAM. I plan to use my old, but still kickin', Kicker ZX750.1 for my subs. How does the sub out from the Match amp wire up to my sub amp? Thanks!

    Commenter image

    Buck Pomerantz from Crutchfield

    on 9/30/2021

    Danny, The Match Up 7DSP features two powered subwoofer outputs designed to power a couple of subs. If you want to use a different sub amp, there's an RCA output on the Match amp that you can use for its input.

    Posted on 9/17/2021

    I have a Rockford Fosgate P3S2D12 and want to connect it to my R.F. P1000x5 It will be the only speaker that I will be using the amp for. How do I wire the speaker and how do I connect it to the amp? There are sooo many different adjustments on this amp, which ones, (if not all), are relative to my set-up, and, aside from the GAINS adjustment process that I will be encountering , once I complete the wiring, what should all the various slider-type buttons be set to?

    Commenter image

    Buck Pomerantz from Crutchfield

    on 9/27/2021

    Leo, The only safe way to wire that sub to that amp's sub channel is like this diagram. For help tuning, see Tuning your subs.
  • Tully from Kernersville

    Posted on 9/13/2021

    hi there. i have a skar 800 watt dvc 2 ohm. can i pair this with a 2 channel scar 800 watt that is stable at 1 ohm?

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    Buck Pomerantz from Crutchfield

    on 9/13/2021

    Tully, Without knowing precisely what amp and sub you're referring to, we can't help you with advice. If you want a question answered about a system, you must identify the gear by model numbers as well as brand names, so we can get the right information to you.
  • Joshua from Simpsonville, SC

    Posted on 9/5/2021

    Is there a way to wire 2 dvc 2ohm subs to 1ohm on a monoblock amp?

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    Buck Pomerantz from Crutchfield

    on 9/6/2021

    Joshua, Two DVC 2-ohm subs can only get wired together to form a 0.5-ohm load, a 2-ohm load, or an 8-ohm load.
  • Mando from Fort Stockton, TX

    Posted on 9/3/2021

    You can't click on either boxes on this page

  • Raul Rodriguez from Ochelata

    Posted on 8/25/2021

    Thank you so much! This is a very helpful site