Heres what I have, for a HU I have the Kenwood X979, I have rockford speakers in the front 4/6's, and 6/9's rockfors in the back deck(1990 Caddilac deville btw) and in the trunk I have 2 10" L7's in a vented box. The 4 inside speakers are being run off a Phoenix Gold 505 4 channel, and the subs are wired to 1 ohm and are being run by a Hifonics 1500D mono amp, seems the subs sound like crap, just wondering if I went big enough on the subs to rumble through the trunk up to the rest of the car?? Thanks