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Copyright © 2016 Retro Manufacturing, LLC
I have your radio with an amp connected, but hear a
whining/buzzing sound through the speakers when I step
on the accelerator.
If you have an external amplifier installed and experience a high-
pitched noise that varies with the engine’s RPM, there are many
possible solutions:
• Make sure the amplifier’s gain controls are not turned all
the way up. Amplifiers amplify everything, including noise.
• Try grounding the amplifier near where it is installed.
• Try a filter on the amplifier’s 12 volt power lead. Make
sure to use a filter that includes a ground wire.
• On rare occasions, noise can be introduced through
the antenna lead. If disconnecting the antenna makes
the noise go away, you need to replace or repair
the antenna plug where it goes into the radio.
FREQUENTLY ASKED QUESTIONS
