Stop guessing amp size. Match it to your subs.

Amp & Sub Matchmaker

Enter your subwoofers' RMS power, impedance and voice coils. You'll see every safe way to wire them, the amplifier power to shop for at each final load, and monoblock amps from our catalog that fit.

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Amp & Sub Matchmaker

Your subwoofers Results update instantly

01How many subwoofers?

02Voice coils per sub

Check the sub's spec sheet or the label on the magnet. DVC subs have two pairs of terminals.

03Impedance per voice coil

Use the rating per coil, e.g. a "D4" sub is dual 4 Ω.

04RMS power per sub

W RMS

Use RMS (continuous) power, not peak or max.

05Power target

75–100%Conservative. Hard to overpower the subs, a little less output.
100–125%Balanced sweet spot for most daily systems.
125–150%Headroom for clean peaks. Gain must be set with a meter.

Amp matching ground rules

Match RMS to RMS. Ignore peak and max numbers on both the sub and the amp.
Rated at your final load. An amp's power changes with impedance, so compare at the load you'll actually wire to.
Never go below the amp's minimum. A 1 Ω-stable amp can run 1 Ω or higher, never 0.5 Ω.
Set gain with a meter. More amp is safe when the gain is set right. How to set gain
Feed it. Big amps need wire and charging to match. Check the Power Planner.

Woofer Wizard wiring diagrams Power Planner

Your matches Amp power + final load for each wiring option

Amp & Sub Matchmaker

Amp & Sub Matchmaker

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