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engine feedback in aftermarket speakers. Help!

smokinjeep

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jim
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Factory deck 8.4.
installed the following - Focal 6.9 amp. Focal utopia front speakers. 2 JL sub boxes. when volume is really low i can hear slight hum/whistle from front speakers that gets louder/higher pitched when RPMs go up. Any ideas?
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jludave

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Factory deck 8.4.
installed the following - Focal 6.9 amp. Focal utopia front speakers. 2 JL sub boxes. when volume is really low i can hear slight hum/whistle from front speakers that gets louder/higher pitched when RPMs go up. Any ideas?
Sounds like you have a ground loop. Check if you have any loose or frayed wiring. You may need to purchase a ground loop eliminator.

This info may help:

https://www.crutchfield.com/S-kA2kq...car/noise_suppressors_installation_guide.html
 

Pred03

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2019 wrangler 2019 Silverado LT
Factory deck 8.4.
installed the following - Focal 6.9 amp. Focal utopia front speakers. 2 JL sub boxes. when volume is really low i can hear slight hum/whistle from front speakers that gets louder/higher pitched when RPMs go up. Any ideas?
Did you ever get this figured out?
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