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ElectronicsPete, Electronic Engineer
Category: Car Electronics
Satisfied Customers: 17379
Experience:  Over 16 years of experience installing and repairing electronics.
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Just installed aftermarket head unit and door speakers,

Customer Question

Just installed aftermarket head unit and door speakers, which are kenwood 300 watt in the rear door and 160 watt dual audio in the front. When vehicle is in drive and gains speed the audio becomes very distorted and unclear when turning the radio up (less than 50%).
Submitted: 1 year ago.
Category: Car Electronics
Customer: replied 1 year ago.
Speaker distortion only seems to occur when noise from the increasing speeds occurs. Audio for all 3 settings is clear and sounds perfect when the truck is in drive.
Expert:  ElectronicsPete replied 1 year ago.

Hi there

Customer: replied 1 year ago.
Hi I'm in need of some help with the speaker issue I'm having
Expert:  ElectronicsPete replied 1 year ago.

Most of the time this is caused by a poorly chosen ground for a piece of equipment, causing alternator whine which will rise and fall with the engine speed.

It can be fixed by grounding the equipment directly to bare metal on the chassis rather than an available factory ground bolt as is often used to save time. You'll also need to make sure your charging system is in top condition and that your connections between the battery and components are secure as well as the integrity of the factory ground strap, an often overlooked component.