hey yall i need major help my girl has a 10in rockford fasgate sub in the back and 2 pioneer 220peak 6x9's with a jvc 200 watt deck,450 watt amp the sub has 300 watt peak so it is not bridged the sub sound fine but the 6x9 crackle when you turn the bass and volume up past 28 the deck goes to 50...