Hell I could of told you that about your JL W7! I dont even own one,lol! But which a/c was it? If it was the 190 it usually is off around 2 to 4 dbs. But I havent used one in a while. Buddy has the new tl program. So just use that.
Its not that the AC 190 is off 2-3 DBs its that its not consistant, you can score a 140.xx and then test imediatly aftewards and hit a 142.xx and then go back to a 140.xx
He was over 150 with two drivers.Also if anyone is looking for insane single sub setups talk to tommyk 149.XX (dont think he has broken 150 yet but im not sure) with a single 10" type R