Its the Jensen UV10 dvd HU. Its hooked to the normal amp out (unsure what to do for the sub out since its only one rca). It does have bass gain but IIRC its not much and since my dad messed up on the box I cant access my screen to adjust that.
In a way I dont understand and I think isnt right at all but the guy at best buy wired it and my brothers friend (who apparently knows a lot about car audio) said its the way he would have wired it. The amp speaker wire goes to one sub, and then a second wire goes from that sub to the other.
lol wait a second wire? just one or actually a piece of speaker wire that has 2 conductors a pos and neg? also check the phase of your woofers it sounds like you have a phase issue. pop your speakers with a cordless drill battery to make sure they are botrh moving outward. also use a rca y adapter on your sub out