okay i just placed my order for a 15 avalanche! im going to be running it with a JL 500/1. chad at ascendant audio is going to come up with the best SQL specs for a ported box for my escalade and 500/1. i should have the most efficient system in my school. competition is a few alpine type S's ... woop-dee-doo i got him ... a few other blah systems... 2 L7s with a kx1200.1 ... yeah yeah he might have me in SPL so what... besides hes about to blow all his sh!t up anyway. hes going to run it at .5 ohms so he puts 1200w rms to each L7 ... hes most likely going to cook his subs and amp. and some kid is going to get 4 kicker comp VRs 12 inch... i still think i am going to have himn in SPL and SQ since im going to have a box made for SQL and hes just going to have any old box because he doesnt know what hes doing. but i was wondering do you think i will take him in SPL keeping in mind that chad is designing me a ported SQL box. let me know what ya think thanks.