I posted several months ago about my Grotto's transformer that has a mechanical buzz that can be heard from across the room. The sub works fine its just distracting at times. I tired to isolate it as if it were a ground loop but ruled that out.
My cousin has a Grotto i that no longer works and...
Hello. I recently purchased a used Grotto subwoofer to use in a bedroom system. Love the sub but it has a hum that is constant. It does not go away when the signal cable is disconnected nor does it go away when I tried a cheater plug. I've read that it could possibly be the transformer humming...
