I'm not sure, my friend is giving it to me because he blew his 15, and has no desire to get another sub. Its older though, all black, and the Hifonics letters light up blue. my subs are dual 4 ohm so im going to wire them down to 2ohms once i get the amp.
Hate to rain on your parade but you cant take 2 d4's and get 2ohms out of them.
Try this link it might help you some. Good luck.
12 Volt sub wiring chart
My bad, these are single voice coil subs. I'm so used to having dvc subs i always forget these are svc.