My Bose System is extremely loud for some reason. I just installed an after market HU (Alpine) and the sound levels seem really off. I have an AMP running from the deck to a Sub box (JL 8's) My Alpine has a seperate bass level which is currently maxed and the sub is not even driving the way it should. I'm experiencing what others have been talking about with the bass on the sub being to low and not driving and found that information very helpful. Just wondering if anyone else has experienced an extreme sound difference such as this.