I am really hoping someone can help here. I have the Shaker Pro with the subwoofer in the trunk, but it must be the crappiest set-up ever. It has no thump whatsoever, and if you try to adjust the EQ to get any real base then the door subs are overtaxed. I've just dissasembled the sub system to see what's what as I was hoping for a gain adjustment, etc that you find with every aftermarket amp out there, and there is none. So I'm at the point where I want to replace the amp with a decent...

Shaker Pro Amp and Subwoofer Replacement