If you only get the buzz when the coax is connected into any component in the chain, try disconnecting the coax completely from the system. If the buzz goes away, you pretty much know it is a ground loop problem caused by the incoming coax. At that point you can buy a filter for the coax cable and be done with it.
There are multiple sources for the coax filter. At the top end of the price range is the Mondial Magic Brick at about $100. I think you can get basically the same thing from Jensen or from Radio Shack for a lot less money.
Enjoy,
TIC
There are multiple sources for the coax filter. At the top end of the price range is the Mondial Magic Brick at about $100. I think you can get basically the same thing from Jensen or from Radio Shack for a lot less money.
Enjoy,
TIC