73-87 Chevy _ GMC Trucks > Interior & Equipment

Bad sound distortion on stock stereo

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shinkle:
My stock radio has a digital clock with cassett player. It works great except for a bad distortion on the left side speakers. Mainly the rear speaker on the bass sound. The beat beat beat rythm of songs is badly distorted. I replaced the rear stock speakers with no luck. It does it on both antenna and cassette tapes.

Any suggestions?

bd:
Try thoroughly cleaning and verifying all of the connections between the head unit and the speakers.  Validate the ground connection for the head unit.

mdws1987:
Try reversing the left and right connections at the radio. If the distortion moves to the other side, the radio output may be bad...

shinkle:
Where would the ground for the head unit be located? 

I'll try the left right swap and see if the distortion follows it

bd:

--- Quote from: shinkle on April 10, 2021, 10:12:24 PM ---Where would the ground for the head unit be located? 

--- End quote ---

If it follows the factory location, the radio grounds to the left kick panel area or the e-brake pedal frame.  Switching the left rear and right rear feeds is a good idea.

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