I have a stock Infinity unit in my 04 crossfire and I've been noticing that there is a hiss coming from the speakers even though the stereo is turned off. It's as if the stereo is still on. Does anyone know if this is normal? the hiss comes from both the tweeters and the larger speaker in both doors. Any advice would be greatly appreciated. Thanks

 

It's normal. I'm not sure why, but my car others' does it.