Shouldn't be a crossover. I'm not too concerned with SQ, just dont want distortion thats all. Cos the aftermarket 6x9s work alot harder without distortion. And I'm just concerned that if i install aftermarket woofers, then the power difference might ruin the tweeters thats all. Didnt u work at JB? hehe..i'm that asian guy with big hair that always comes in to look at the car audio but never buys. The one that asked u about the initial D ages ago.