Car Audio system power flickers off @ 85% volume?

H

Hi2me4u

New member
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?
 
First i have a question, is it just the power to the deck and amp that fail? or do the lights and everything else turn off as well?
 
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