Currently I have 2 Pioneers in the front and 2 Kenwoods in the rear (both about 22w peak) with an Alpine CDE-102 head unit powering them. For the sub I have an 18" JBL (rated for 800watts rms at 8ohms, 99DbSPL @ 1w/1m) in a enclosure I built my self. Its dual ported, tuned to 24Hz, and designed...