hay to all. im the ripspeed guy for halfords and im majour in to sounds. i have juat a 12" in my boot with 1 d class amp and a powerfull head unit,also i have two5.25 in front two 6x9 and 13 in the shelf as well.. the more powerfull the head unit the less work your amp does so the further you can push it the big story above says unless your running 3 or more amps its a bit of a waste of time. do you wont neddy punchy bass or are you wanting sweet clear sound to rock out to with a heavy bass if you want? i can sort you out with a system if you tell me exactly what you want . also if you live ne