Subwoofer Wiring Diagrams | Sonic Electronix Sep 29, 20142) What is the difference between parallel and series subwoofer wiring? Parallel Wiring – This is a wiring configuration that applies the same voltage to all the connected components. The current from the amplifier is then divided equally among all the drivers according to their respective impedances. Subwoofer Wiring Diagrams - Crutchfield Michael, Three DVC 4-ohm subs can only get wired together to form a 24-ohm, a 9-ohm, a 0-ohm, and a 2-ohm load - wired like this diagram. In this configuration, the voice coils of each subwoofer are wired together in series, while the subwoofers themselves (Sub 1, Sub 2, and Sub 3 in the diagram) are wired together in parallel.