ok today i was goin to hook my system back in the car well the sub was blew so i just took it all back out to where i would have jiust the factory stuff except my head unit.well i noticed my factory amp is gettin really hot i mean you can put a drop of water on it and it sizzles is this the norm or what i have never had the factory amp out and i was just checking it out .i was listenin to music loud .but im worried somthing might go wrong .never had ne trouble with my car before like this help me please

 

this is also the factory speakers and factory amp neveer been touched before if that helps

 

How did your sub turn blue in the first place??