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i listed a post stating my 6x9's were blown but i was wrong..i have no idea whats going on..whenever i turn my stereo up loud it plays fine for a couple of seconds but then i lose volume, only in my mids and highs though, I thought it might be my crossover but it only lowers at a relatively high volume and nothing is blown or loose..any suggestions? I dont want to take it to a car shop because u know those guys will tell u anything to get u to buy their crap. right now i have a new pioneer 8400, audiobahn crossover, a four channel 1200 hsl amp and a mono 2000 hsl amp w/ a 1 farad cap. this install has worked fine for six months till now so could it be an equipment failure?
sorry for the long post but its so frustrating w/ my new xm and not being able to turn it up. any help would be greatly appreciated.
 
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I would suspect it is the battery that can't keep up with the electrical demand of the sound system. Sounds like it is pretty kick ass

try out the sound system with the car in neutral running about 2000 RPM if it still lowers the volume, it might be the alternator that can't keep up with the system.

If you have a voltmeter mesure the voltage across the battery terminals with the system at normal (Low) volume and then compare it the the voltage at higher volumes.

If it worked fine before I tend to think that your battery is heading south but your alternator could be heading south with teh battery.

I recommend a big AC Delco battery.

and an alternator check

HTH
 
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I WAS THINKING THAT TOO BUT WHY WOULD IT START JUST NOW? AND THE CAR STILL STARTS RIGHT UP SO I THINK MY CHARGE IS GOOD?
THANKS FOR THE REPLY THOUGH IM GOING TO BUY A VOLTMETER AND CHECK IT OUT RIGHT NOW..ANY OTHER SUGGESTIONS GUYS?
 
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