i just oreder and should recieve in the next week my new system, the one you see below is my old one that i put in about 2 or 3 months ago, it just didnt do it for me, so now i ordered 2 kicker 15" L7 dual 2ohm subs and i have a pair of infinify beta digital 300 amps. and i still have the same 4 power caps and pioneer reciever. also i ordered a 4 cu ft sealed box from www.speakerhole.com i am going to wire each sub to 4 ohms and hook each one to its own amp so they will get 1000watts rms each and i emailed infinity and they said the amps should put out about 1150 watts max each so that should be plenty of power for each sub. let me know what you all think of this new setup thanks