I agree with you completely and I believe the crossovers are built into the amp. My amp is a 300.1 and I am pretty sure the subs are wired in parallel although I cant verify b/c its a sealed box with no plexi . I'm just sick and tired of having to take my amp back to Sound Advice and have them ship it off every so often b/c eventually this amp will be out of warranty too. But this is really pissing me off. :angry: