Depends on the impedence of the subs and what the amp is stable to. My E-Audio1000D is 500wrms at 4ohm, 800wRMS at 2ohm and 1000wRMS at 1ohm. If I have a 1 DVC sub at 2 ohm, I can wire it to 500wRMS, if I have 2 DVC sub at 2ohm, I can wire them to 800wRMS.