DVC subs only allow you to have flexible wiring capability since you can wire them at 2ohms, 4 ohms and 8ohms..

do not connect this where in a single DVC sub was connected to a 4channel amp at bridged, the setup was channel 1&2 was bridged then connected to the Sub at 4ohms then channel 3&4 was also bridged and connected to the same sub on the other side..

your amp will overheat and your sub will not play properly..

also you may use HU with 4V to 5V line out