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Free Tool · DVC & SVC Wiring

Subwoofer Wiring Diagram Generator

Pick your subwoofers and voice coils and this free subwoofer wiring wizard draws every wiring diagram — the amp-and-sub connections, the final ohm load, and which loads are amp-safe — with downloadable wiring charts. A free tool from Audio Intensity.

GeneratorHow Wiring WorksFAQ
Quick answer: To wire subwoofers, series adds coil impedances together (ohms go up) and parallel divides them (ohms go down). Set your number of subs, voice-coil type (SVC or DVC), and coil impedance below, and this subwoofer wiring calculator (a wiring wizard and ohm calculator in one) draws every valid diagram and wiring chart with the final ohm load — then match it to your amp’s minimum stable impedance.
Expert-built Built & reviewed by Scott Welch — IASCA & MECA Sound Quality Champion with 40+ years in car audio.

Subwoofer Wiring Diagram Generator

Choose your setup — the tool draws each wiring option, the final impedance, and an amp-safety badge.

Covers one or two identical subwoofers. Always confirm your amplifier’s minimum stable impedance in its manual before wiring.

How Subwoofer Wiring Works

Every card above is a complete amp-and-sub wiring diagram: it shows how each voice coil connects, how the subs tie together, and how they run to the amplifier. Builders sometimes call this a subwoofer wiring wizard — it’s the same idea, drawn for your exact setup and coil impedance.

Series adds impedances together (ohms go up). Parallel divides equal impedances by how many there are (ohms go down). A dual voice coil (DVC) sub has two coils you can wire in series or parallel inside each sub, and then you wire the subs together in series or parallel — that’s what gives DVC subs so many wiring options.

Lower impedance lets an amp make more power, but only down to the amp’s minimum stable load. Wiring below that overheats and damages the amp, so the final ohm load always has to match what your amplifier is rated for.

This tool shows balanced wiring, where every coil shares current equally. Mixed sub sizes or impedances aren’t covered here. Verify the final load against your amplifier’s rated minimum impedance before connecting.

Finish Your Build

Got your wiring sorted? Size and tune the enclosure with the rest of the suite:

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Subwoofer Wiring FAQ

How do I wire a dual 2-ohm subwoofer to 1 ohm?
Wire the sub’s two voice coils in parallel — connect the two positive coil terminals together and the two negative terminals together, then run those to your amp. A single dual-voice-coil 2 Ω sub presents a 1 Ω load this way. Make sure your amp is 1 Ω stable.
How do I wire a dual 4-ohm subwoofer?
A single DVC 4 Ω sub can be wired two ways: coils in parallel for a 2 Ω load, or coils in series for an 8 Ω load. Choose the one that matches your amp’s stable impedance — 2 Ω gets more power from most monoblocks.
How do I wire two subwoofers together?
Wire each sub’s coils first, then connect the two subs in series (ohms add) or parallel (ohms halve) to the amp. Set “Number of subs” to 2 above and the generator draws every valid diagram with the resulting impedance.
Can I wire two DVC 4-ohm subs to 2 ohms?
No. Two identical dual-voice-coil 4 Ω subs can be wired to 1 Ω, 4 Ω, or 16 Ω — but not 2 Ω with balanced wiring. To land on 2 Ω, use a single DVC 4 Ω sub with its coils in parallel, or choose different subs.
What’s the difference between a single and dual voice coil sub?
A single voice coil (SVC) sub has one coil and one set of terminals. A dual voice coil (DVC) sub has two independent coils, giving you more wiring options to hit the exact impedance your amplifier needs.
Is a 1-ohm load safe for my amplifier?
Only if your amplifier is rated 1 Ω stable. Most modern monoblock amps are, but always check the manual. Running a load below your amp’s minimum stable impedance overheats and can destroy it.
Does lower impedance give more bass?
Lower impedance lets the amp produce more power, which can mean more output — but only down to the amp’s minimum stable load. Going lower than that doesn’t add usable power; it just risks damage.
What hits harder, 1 ohm or 2 ohm?
Whichever lets your amp make more rated power safely. A 1 Ω load pulls more power from a 1 Ω-stable amp than 2 Ω would, so it usually hits harder — but only if the amp is rated for it. On a 2 Ω-stable amp, 2 Ω is the hard-hitting limit and 1 Ω would damage it.
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