Just over the last few weeks I developed a very annoying engine noise that whines with the increase in rpm of the engine. With stereo on but boat off im getting slight feedback/whistle - I can tolerate that but would still like it gone. Once the engine is running im getting very loud feedback, predominatily through the tower speakers. This all starting happening out of nowhere.
First thought was it was a bad rca or loose Y adapter somewhere between the WS-420 and the two Syn 4's. I unplugged them all and ran new ones - same problem.
Next, I thought the fans on the amp rack could be causes the noise so i unhooked them all - didnt help.
I also ran a jumper ground from one amp over the ground on the WS-420...did not help.
My set up - four Syn 1 & three Syn 4.
I ran out of time last night to look into much further. What do you guys think?
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