I've had my system (two 10" subs, new speakers, 1200w amp) for about a year, and all of a sudden the power in the deck and amp cuts out when I go past a certain volume (30/35), but comes right back on. I was told I need a capacitor, but then I went back to the same place and a different guy said it could be the wiring needing an upgrade to a 4 guage and won't be able to tell until after they install it (meaning pay to test it out) if I need a capacitor (pay for wiring upgrade + installation + capacitor + installation). He even said that the wiring and capacitor might not be the problem but I'd be paying for it all anyway if it didn't work. Any advice?