Hi, I am a newb to all this. I just picked up some gear from a buddy. 2 Kicker 8 inch subs, in a center console box. 1 Sony XM554ZR 600 w amp, 1 Kenwood KAC-849 600 w amp, 1 Kenwood KAC-729S 600 w amp, Alpine CDA 9851 deck, I purchased Kaption 5.25 150w, and Kaption 6x9 200w. We installed today, having a tough time setting levels and getting it to sound right. I am running the Sony for the subs, the 849 for the 6x9's, and the 729S for the 5.25's. Sounds like a popping on the one 5.25. Just curious if I should change which amp drives which speaker, How to set levels, etc. Any help would be greatly appreciated