How To Wire Subwoofers in a Car

When planning to add a subwoofer system to any vehicle, you should determine which type of subwoofer will best serve your needs.

Today you will find a huge variety of subs available with 2 ohms, 4 ohms and 8 ohms voice coils. There also are a growing number of subwoofers available as dual 2, 4, and 6 ohm voice coil versions.

Generally speaking, buying the dual voice coil subs will present you with a larger number of options for installation. One of which is the ability to grow your system at a future time.

How To Wire Subwoofers in a Carimage source: soniceletronix

Diagram On How To Wire Subwoofers in a Car

How Can I Wire One DVC Woofer?

Connecting the two voice coils of the driver in series (+ to -) will result in the following impedances:

(Dual 6 ohm) Subwoofer: 12 ohms

  • Normally not used (because of high impedance) but is safe for any mono-bridgeable amplifier available on the market today.

(Dual 4 ohm) Subwoofer: 8 ohms

  • This configuration is suitable for all mono-bridgeable amplifiers and any rated to handle 4 ohm stereo load. (Seldom used, as stated above)

 For Low Impedance setup:

(Dual 2 ohm) Subwoofer: 4 ohms

  • This configuration is suitable for all mono-bridgeable amplifiers and stable at 4, 2, or 1 ohm mono.

Connecting the two voice coils of the driver in parallel (+ to +, – to -) will result in the following impedances:

(Dual 6 ohm) Subwoofer: 3 Ohms

  • This would be the most commonly used method of connecting a single 6 ohm DVC to a mono-bridged amp. Check to be sure your amp can handle a 3 Ohm mono (1.5 Ohm stereo) load.

(Dual 4 ohm) Subwoofer: 2 ohms

  • This can only be used with “high current” amplifiers rated to handle 2 ohm mono loads. (most popular)

(Dual 2 ohm) Subwoofer: 1 ohms

  • This configuration is suitable for all mono-bridgeable amplifiers and stable at 1 ohm mono.

How do I wire TWO DVC Woofers? 

Connecting the two voice coils of each driver in series (+ to -) and the drivers themselves in parallel (+ to +, etc.) will result in the following impedances:

TWO (Dual 6 ohm) Subwoofer: 6 Ohms

  •  This configuration is the most common way to wire a pair of 6 ohm DVC woofers. This is safe for amplifiers that are rated for 4 ohm mono/2 ohm stereo loads.

TWO (Dual 4 ohm) Subwoofer: 4 Ohms

  • Suitable for any amplifier rated to be stable with 4, 2, or 1 ohm mono loads.

TWO (Dual 2 ohm) Subwoofer: 2 Ohms {most popular)

  • Suitable for any amplifier rated to be stable with 2, or 1 ohm mono loads.

 

For Low Impedance setup:  

Connecting the voice coils of each driver in parallel (+ to +, – to -) and the drivers themselves in parallel (+ to +, etc.) will result in the following impedances:

TWO (Dual 6 ohm) Subwoofers: 1.5 Ohms

  • This can only be used with “high current” amplifiers rated to handle 2 ohm mono loads or less.

TWO (Dual 4 ohm) Subwoofer: 1 Ohm (most popular)

  • This can only be used with “high current” amplifiers rated to handle 1 ohm mono loads or less.

TWO (Dual 2 ohm) Subwoofer: 1/2 Ohm

  • This can only be used with “high current” amplifiers rated to handle 1/2 ohm mono loads or less.

How do I wire THREE DVC Woofers?

Connecting the two voice coils of each driver in series (+ to -) and the drivers themselves in parallel (+ to +, etc.) will result in the following impedances:

THREE (Dual 6 ohm) Subwoofers: 4 Ohms

  • This is the most common way of wiring three (6 ohm DVC woofers) series subwoofers on a bridged amplifier and is perfect for amplifiers that are rated for 4 ohm mono loads.

THREE (Dual 2 ohm) Subwoofers: 3 Ohms

  • This can only be used with “high current” amplifiers rated to handle 2 ohm mono loads or less.

 

For Low Impedance setup:

Connecting the two voice coils of each driver in parallel (+ to +, – to -) and the drivers themselves in parallel will result in the following impedances:

THREE (Dual 6 ohm) Subwoofers: 1 Ohm

  • This can only be used with “high current” amplifiers rated to handle 1 ohm mono loads or less.

THREE (Dual 4 ohm) Subwoofers: 1 Ohm

  • This can only be used with “high current” amplifiers rated to handle 1 ohm mono loads or less.

THREE (Dual 2 ohm) Subwoofers: 1.34 Ohms

  • This can only be used with “high current” amplifiers rated to handle 1 ohm mono loads or less.

How do I wire One SVC Woofer?

 (4 Ohm SVC) Subwoofer: 4 Ohms

  • This is the most basic hookup. If you use a mono-bridged amplifier, it has to be stable at 2 ohm stereo.

How do I wire TWO SVC Woofers?

TWO  (4 Ohm SVC) Subwoofer: 2 Ohms

 Probably the most popular of all sub systems. Wire the two subs in Parallel.

  • Must be powered with a high-current amplifier rated stable at 1 ohm stereo load.

How do I wire THREE SVC Woofers?

THREE (4 Ohm SVC) Subwoofer: 1.33 Ohms

  •  Must be powered with a high-current amplifier rated stable at 1 ohm mono load.

For more diagrams on wiring visit:  sub wiring helper and Subwoofer wiring diagrams

*We present this basic information as a service and cannot be held responsible for any self-installation of products.

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