With a new battery, volt regulator, and alternator. Does anyone know how to get rid of the alternator whine through the speakers? Gets louder as I accelerate

 

Do you have an separate amp? Check the ground at the radio.


Alternator whine usually caused by potential difference in the ground of two or more components. The difference tries to equalize over what links them...the audio signal ground in this case... and you hear it expressed as alternator wine. The truth is a steel automobile chassis is not a good ground bus. You need to ground all your audio equipment at a single point close to the battery and / or engine to chassis ground strap to eliminate any potential difference. For example if an in dash radio's ground wire comes loose the ground may find it way through the frame of the radio which may not be an ideal ground. Another example... If you have a radio in the dash and an amplifier in the trunk you need to run a negative ground wire up to the radio, the forward to the battery. Heavier and Higher quality audio cables can also help to a point by being able to carry more current and better equalize the PV difference of the components.


Another possibility is a bad alternator putting out dirty DC current but this is seldom the case more frequently its a grounding issue . Especially in this case since you've recently replace the alt.

 

Thanks, I don't have a separate amp. Its the original superfox radio in the series 3 xj6