Right now I have 2 MA audio 15's powered by hifonics 1206d amp. In a 4sq ft sealed box. So it took a lot to get the box in and I can't get it out. They don't sounds good so I'm gonna cut the box out and get new subs. Thinking some 2 FI sd12's or 10's powered by ss trx2000d amp. Not sure how good they are. Looking more for sq too. Can you guys help me out?