I was helped ALOT by these guys at www.low-hz.com I had problems with my mach 460, but now I am good. I have all aftermarket and great products. May not have heard of them but btter than any kicker, JL, RF and so forth. They now have a forum so if you guys need help, get on here an ask. GREAT guys !!!

http://low-hz.com/forum/index.php

 

kind ofa slap in the face isn't it? I could have told you everything you needed to know about the mach as well...........