Hey, I have a kenwood receiver, 12'' sub, 1100 watt amp, Some after market front speakers and stock rear speakers, a shop installed all these last year. Everything runs off the same amp. Two weeks ago my amp shorted out and now I have no sound at all. Last Friday my truck wouldn't start and I had to jump start it, after a 20 min drive I noticed the volt meter keep moving from 14 volts to 10 or lower only when I was stopping at stop lights. I took it to my mechanic and was told that my alternator was crapping out on me, $280 later after he was done installing the new part the truck was completly dead, that's when he mention if I had some other issues with the truck and I mention the amp thing, he removed the fuse for the amp that comes from the engine to the cabin. After a jump start the readings were ok!!!!!! The amp cause a short and that was the reason for not starting. I want to reinstall my sound system but was wondering if the amp will in effect damage the alterntor??? Some one told me to get a device that looks like a giant pill to prevent this from happening. I want to run my sub with a 1100 amp and speakers with a diff amp, probably a 300 watt or lower. Can any one help me!????