My roommate and I treat everything like a competiton. So he has an old school buick with two 10s (300rms each), two 6x9s in the rear deck and two tweeters up front and all this is power with one amp (i think a two channel). in order to compete, I got a t3 ts(600rms) with a 800 watt 2-channel amp and i already had compenent speakers up front and some nice 6.5s in the rear deck but those lost power when the subwoofer got added. I got him on the bass tip but its the highs that he got me beat at...So how can i increase my highs without adding another ampilifer???