Originally Posted by
hondadriver
i unhooked the 4ch so only the 2ch is hooked up and bridged to the sub but it is still makin the engine whine so i dk because i am using the same wires i used in my old setup only thing that changed is the amp and sub but my old setup wasnt as strong as this and my old subs were in a bandpass box where this one is in a sealed.
it could just be the amp is more sensitive and is pickign up noise the other amp couldnt - try lowering the gain and turning up the volume to compensate.