Sizzling sound coming from the back

[MrRoseBlackMSP]

Ok so im drivin today with my a/c on and music playin and all of a sudden i hear like a sizzling sound kinda like an electric sizzle, so i mute the stereo and its still doin it!!:wtf: And i got all upset thinking maybe the sub blew out but no no it was still working, does anyone have any idea what the hell it could be????

 

[MSP Pro]

It's noise amplified by the sub amp. Check the grounds to the amp.

 

[MrRoseBlackMSP]

ok ill do that tomorrow