Power is your problem. You dont say if your main feed is direct off the battery. If not try that first.
If that doesnt solve it then you need to look at these cap things.
Not too up on these things coz I'm not into that much power! But sure you could check it out on 'net
Power Capacitor things - they store power to cope with the peaks, which is why yours keeps tripping out!
Alternatively turn that big volume knob down and save your ears!
