Car Stereo Problems
I have a Alpine Head unit with two Rockford amps. Everytime you crank it way up the whole system shuts off then it comes right back on, but you have to turn it down real fast or it will just keep shutting down? :(

You have a direct short somewhere. I'd suggest checking for your GOOD ground, GOOD powerwire(too many amps across a small guage wire is bad). Check your polarity (+ and -) on all your speakers. Does the power of the Alpine shut off too, or does it stay on and and you just dont hear anything? If this is so, I'd say there the amps are going into protect mode... Either your OHM load is too low (too many speakers connected to a channel for instance).... Can you give anymore details on what exactly you have in your system?

Ya you could have a partially blown speaker also if its jus the amps shuttin off. Sub, mid, or somethin. If the head is shuttin off too then you either have a bad power supply to it (somethin alpine heads are finicky about) or you mite have some wires shorting in the back of it if they werent connected properly. I see your sn says vette guy, if you do in fact own an older vette then it is probably common ground and the wiring in there would definitely cause the amps to shut off. as the speakers are wired directly to ground for return signal

The amps are P2002, The subs are P2 12's in sealed box, 2 door speakers and 2 6x9's below the rear window. I bought the car with everything the way it was. Looks like 8 or 4 guage wiring. The ground wire is only about 2 ft long bout is connected under a seat belt bolt under the rear seat?, I'm no expert but that can't be good.

The head unit and the amps shut down, would I need a higher amp alternator or a one farad cap would that help if its not getting enough power? One of my friends said if it wasn't getting enough power it would do that also.

Also I forgot, No it's not the corvette, I would never put anything like that it it. It's a 70 BB 454, The car with the trouble is a 97 cavy RS.

Ground wire sounds like it's in a decent location. It could have some corrosion on it though. I prefer scraping away the sheet metal tacked to the frame and running either some self tapping screws or a ground lug through it, then make sure the battery wiring has the same size or bigger wire going from it's negative terminal directly to the chassis. Check to see if one of the sets of speakers is run off the deck and not one of the amps in the trunk. If that's the case then I would be willing to bet you have a blown speaker or one of the door speakers has water in it because doors like to leak and sometimes installers forget that when installing speakers. The easiest way to check if a speaker is grounding out from water is to grab a DMM and do a continuity test on the wires in the dash that lead to the door speakers. First test the speakers wires to ground and if that checks out okay, test for current by switching to DC voltage and use the speaker wires as ground and the power in the harness for +V. If that checks out then the biggest thing I would worry about is either the headunit has gone bad or you are in SERIOUS need of an alternator/battery. It's not the amps causing it, the headunit shutting off in turn shuts the amps off. My first step would be to get the charging system load tested. If everything checks out there, then your next bet is to grab a cheap headunit or borrow one and replace the Alpine one to see if that changes things. If that still doesnt fix it, then I certianly do not envy you sir lol. At that point, the only other thing to check would be a pinched RCA or shorted turn on lead. Sometimes that can cause a head to go on the fritz...sometimes. But other than that it's something in the chassis electrical system that can sometimes be VERY difficult to find. A capacitor is not the way to go in this instance if it turns out you are just maxing out your electrical system's capacity. An auxiliary audio battery in parallel with the underhood battery is always the way to go when trying to keep up with a high load, high drain audio system. And always make sure your grounds are in tip top shape, it's the number one cause of component failure. Aside from abuse of course haha.

Thanks for the tips guy's I'll tear into it this coming weekend. I'll let you know what I find.