What could be wrong with this car stereo amp?

I installed my brother's car stereo for him a couple of weeks ago. Up until this point, it's worked perfectly fine. All of a sudden it started blowing the 30 amp fuse that is in the amp, not the inline power wire fuse, but the fuse box style fuse that plugs directly into the amp. I have changed it four times now and each time that I change it it blows again within seconds. Is it more likely to be a wiring problem or something within the amp? Any suggestions are appreciated. Thanks!What could be wrong with this car stereo amp?
It is either something inside the amp that is pulling too much current. It can also be your alternator is not putting out enough current. If the battery has low volts and the alternator is weak, then the low voltage will make the amp pull more current than normal to get the same watts. have the alternator and battery load tested. a stereo shop can do this.What could be wrong with this car stereo amp?
YOU BETTER GO to the nearest car audio set-up shop... immediately... maybe it will burn your car i swear like my uncle experience so DAMN uncle... i won't like to hapen to other people alreadyWhat could be wrong with this car stereo amp?
check the power wire for bare spots
Disconnect the speaker wires at the amplifier, then see if it blows the fuse again. If it doesn't, then you may have shorted speaker wiring or a defective speaker. If it does, then there's an internal short in the amplifier.