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73-87 Chevy _ GMC Trucks => Interior & Equipment => Topic started by: shinkle on April 10, 2021, 11:27:00 AM

Title: Bad sound distortion on stock stereo
Post by: shinkle on April 10, 2021, 11:27:00 AM
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?
Title: Re: Bad sound distortion on stock stereo
Post by: bd on April 10, 2021, 12:48:49 PM
Try thoroughly cleaning and verifying all of the connections between the head unit and the speakers.  Validate the ground connection for the head unit.
Title: Re: Bad sound distortion on stock stereo
Post by: mdws1987 on April 10, 2021, 04:21:27 PM
Try reversing the left and right connections at the radio. If the distortion moves to the other side, the radio output may be bad...
Title: Re: Bad sound distortion on stock stereo
Post by: shinkle on April 10, 2021, 10:12:24 PM
Where would the ground for the head unit be located? 

I'll try the left right swap and see if the distortion follows it
Title: Re: Bad sound distortion on stock stereo
Post by: bd on April 10, 2021, 11:18:52 PM
Where would the ground for the head unit be located? 

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.
Title: Re: Bad sound distortion on stock stereo
Post by: calif phil on October 16, 2021, 08:38:49 PM
I sprayed the shafts of my stock ETR radio with Deoxit and it improved the sound immediately.   I took the radio out to do it. 


Sent from my iPad using Tapatalk
Title: Re: Bad sound distortion on stock stereo
Post by: JohnnyPopper on October 16, 2021, 09:33:37 PM
That stuff is phenomenal! D5 for general purposes, F5 made the same but is good on faders.

(funny- spell check doesn't recognize "fader") ::)

Please post what you find!
Title: Re: Bad sound distortion on stock stereo
Post by: bd on October 16, 2021, 11:34:00 PM
(funny- spell check doesn't recognize "fader") ::)

First name "garth," from a galaxy... well, somewhere...  :)