Noise when engine on. Help

[Bnorby21]

Okay guys/gals need some help. Have been trying to fix this issue for quite some time . Stereo sounds great until I turn the engine on . It gets louder with more throttle. I've tried everything I know . Grounding etc . Anyone have tips? Thanks

 

[ripler]

Try these troubleshooting tips.

https://learn.sonicelectronix.com/how-to-eliminate-engine-noise/

Car audio noise suppression guide — diagnosing and treating noise problems in your car audio system

Diagnosing and treating noise problems in your car audio system

www.crutchfield.com

 

[swatski]

Okay guys/gals need some help. Have been trying to fix this issue for quite some time . Stereo sounds great until I turn the engine on . It gets louder with more throttle. I've tried everything I know . Grounding etc . Anyone have tips? Thanks

Check this thread https://jetboaters.net/threads/humming-noise-after-amplifier-install.18026/page-2#post-327009
@Mainah knows his electronics stuff, lol.

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[Bnorby21]

Thanks guys . I'll try some shielded cables

 

[swatski]

Thanks guys . I'll try some shielded cables

And - the common ground, that is the key. Everything, including the HU!

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