I just bought an 8" Pyle sub that came in a box with the amp already installed. I hooked it up. No power. So after 3 days of trying to fix it. Nada. So i thought i blew the board so i bout a new amp that is 200 watts. And took the old amp out and hooked up the new one. And the same happens. But this time my friends swear the can feel the SMALLEST bump, but i think it was the bass in the normal speakers. Can anyone help me with my little problem? thanks.