So I have a Power Acoustik 3500D amp right now pushing two 12in 2500w Power Acoustik Subs and I wanna get two 15in 3000w mofo's.(I know the amps and subs are overrated and cheap but I don't wanna spend money) I'm just wondering if my amp can push those two twelves or will it be too under powered because I'm not sure about the amp or subs real power rating, Thanks.
Its okay to underpower your subwoofers. The amp will power the 15's fine. Just make sure you get dual 4ohm. Wire the subwoofers in parallel and you'll have both subwoofers wired down to 1ohm. This way you'll get the full power out of your amplifier.