A dual ohm subwoofer, more commonly called a dual-voice coil (DVC) subwoofer, allows the user to select from one of two different wiring patterns to create a subwoofer with differing impedances. A DVC subwoofer wired in parallel will yield an impedance that is half of the impedance of the individual voice coils. When wired in series, it will present an impedance of twice that of the individual voice coils. For example, a dual 4-ohm voice coil subwoofer will yield an impedance of 2 ohms when wired in parallel and 8 ohms when wired in series.
Instructions
Wiring a DVC Subwoofer in Parallel
1. Cut two lengths of speaker wire. The first must be long enough to reach from the amplifier to the subwoofer, and the second must be long enough to reach from the subwoofer's first set of speaker terminals to its second set.
2. Connect a length of speaker wire from the outputs of the amplifier to the first set of terminals on the subwoofer. Connect the positive terminal of the amplifier to the positive terminal of the subwoofer, and then the negative to the negative.
3. Connect a second length of speaker wire from the first set of speaker terminals on the subwoofer to the second set. Connect the positive terminal to the positive terminal, and the negative to the negative. This completes wiring the DVC subwoofer in parallel.
Wiring a DVC Subwoofer in Series
4. Cut two lengths of speaker wire. The first must be long enough to reach from the amplifier to the subwoofer, and the second must be long enough to reach from the subwoofer's first set of speaker terminals to its second set.
5. Connect a length of speaker wire from the outputs of the amplifier to the first set of terminals on the subwoofer. Connect the positive terminal of the amplifier to the positive terminal of the subwoofer, and then the negative to the negative.
6. Connect a second length of speaker wire from the first set of speaker terminals on the subwoofer to its second set. Connect the positive terminal to the negative terminal, and the negative to the negative. This completes wiring the DVC subwoofer in series.
Tags: positive terminal, speaker wire, Connect positive, Connect positive terminal, enough reach