Even though my turntable was on a wall bracketed shelf, I still got air-bourne feedback. The woofers, especially my subwoofers, would be oscillating, and I also saw my tonearm bouncing up and down -- not out of the groove, but it was pretty peculiar to watch.
I used a KAB rumble filter, added more methods of isolation under the turntable, even between the wall bracket and the wall itself. The only other thing that comes to mind is isolating your turntable in another room, but then you would have to get up everytime to tend to it.
Best to you in your rumble and feedback endeavors -- hope you can solve your problem.
I used a KAB rumble filter, added more methods of isolation under the turntable, even between the wall bracket and the wall itself. The only other thing that comes to mind is isolating your turntable in another room, but then you would have to get up everytime to tend to it.
Best to you in your rumble and feedback endeavors -- hope you can solve your problem.