I am running this amp with the speaker level inputs. When I give it a test run the balance is not working properly and the sub sounds crappy. I first assume that I must hve screwed up the speaker wires running to the amp. When I hook up speakers directly to the same wires running into the amp the balance is working as it should. I even went and got a loc to try the rca ins but I still get the screwed up balance. Any ideas?