How to Wire Single Voice Coil Subs

2-ohm Subs

1.

Strip one half to one inch off of the ends of your speaker wire. You'll do this for the positive and the negative. Each end that gets plugged in to an amp, or a sub will need one half to one inch of stripped, and exposed wire.

2.

Attach the positive wire to the amp positive terminal, and the positive terminal of sub number one. Attach the negative wire to the amp negative terminal, and the negative terminal of sub number two.

3.

Run a wire from the positive terminal of sub number two, to the negative terminal of sub number one. This will give you a 4-ohm amp load, and is the correct way to wire two 2-ohm subwoofers to a mono (sub) amp.

4-ohm Subs

1.

Strip one half to one inch off of the ends of your speaker wire. You'll do this for the positive and the negative. Each end that gets plugged in to an amp, or a sub will need one half to one inch of stripped, and exposed wire.

2.

Run the positive wire from the positive terminal on the amp, to the positive terminal on sub one. Run a new wire from the positive terminal on sub one, to the positive terminal on sub two. Ensure that you have a positive wire running into, and out of sub number one.

3.

Run the negative wire from the negative terminal on the amp, to the negative terminal on sub one. Run a new wire from the negative terminal on sub one, to the negative terminal on sub two. Ensure that you have a negative wire running into, and out of sub number two. This configuration gives you two 4-ohm subs running at a load of 2-ohms, which is near-perfect. If you have the option to select the impedance levels of your subs, 4-ohm subs connected to a mono (sub) amp is about as good as it gets in most instances.

2 Channel Amp (2 or 4-ohm Subs)

1.

Strip one half to one inch off of the ends of your speaker wire. You'll do this for the positive and the negative. Each end that gets plugged in to an amp, or a sub will need one half to one inch of stripped, and exposed wire.

2.

Attach the positive wire to the positive terminals on both the amp, and subs. Use channel one for sub one, and channel two for sub two.

3.

Attach the negative wire to the negative terminals on both the amp, and subs. Use channel one for sub one, and channel two for sub two.

Tips and Warnings

  • Always disconnect the battery when working with electrical components of your car. The amp is connected to your battery, and could produce sparks when tweaking it.
  • Wiring a single voice coil sub is pretty cut and dry. For the common, two subs, one amp install, the only real variation you'll run into is the impedance level of the subs (ohms) and the channels on the amp.