Tweeter Hissing

[Thedeadly1 10+ year member]

The higher the rpm, the louder the tweeter hissing. My setup is in my signature. The stereo also makes weird noises when the car is completely off. What can i do?

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[andrewmoore13 10+ year member]

Alternator whine FTL!

Pioneer is infamous for it... Theres an Alt Whine fix thread on here somewhere that may or may not work for you. It didn't for me. But a lot of people have had it help them so its worth a shot.

 

[bikinpunk 10+ year member]

Alt whine it is.

check ground resistance.

 

[jlsmobilesound 10+ year member]

The higher the rpm, the louder the tweeter hissing. My setup is in my signature. The stereo also makes weird noises when the car is completely off. What can i do?

Definitely alt noise. Check your ground and try moving it to another location. Make sure it's a clean ground as this is definitely a symptom of.