How to Add a Subwoofer to a 4-Channel Amp
Speakers, such as a subwoofer, that are mounted or installed in a speaker box need to be powered by an amplifier. Amplifiers come in various types that have two to four channels that are available to connect multiple subwoofers. An additional subwoofer can easily be added to a four-channel amplifier in your car or truck. You will first need to decide which channel on the amplifier to use for the new subwoofer.
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Instructions
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1
Determine how many subwoofers you will have connected to the amplifier. A four-channel amplifier can have up to four subwoofers connected.
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2
Calculate the length of speaker wire you will need to run from the amplifier to the location of the new subwoofer. Run a length of speaker wire from the amplifier to the subwoofer. Mark where the speaker wire will need to be cut with a piece of masking tape or use a felt-tip marker.
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3
Add 3 inches to the mark you made in step 2 and then cut the speaker wire with the wire cutters. Remove ½ inch of insulation from each end of the speaker wire with the wire strippers.
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4
Unscrew the terminals, for the channel you want to use, on the amplifier with the Phillips screwdriver. Connect the positive wire and negative wire to the terminals and then tighten the screws.
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5
Connect the other end of the speaker wire to the positive and negative terminals on the subwoofer. Push down on the tab for the positive wire. Insert the wire and then release the tab. Repeat this step for the negative wire.
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Tips & Warnings
The speaker wire can be cut with a pair of scissors or a utility knife if you do not have a pair of wire cutters.
A DVC 2-ohm subwoofer is connected by attaching a speaker wire from the second negative terminal to the first positive terminal on the subwoofer.
References
- Photo Credit speaker box close up image by rvvelde from Fotolia.com
