Bellari Hum


I've been noticing that I'm getting a buzz/hum coming from the speakers when using the Bellari VP129 phono preamp. I have the ground wire attached from the turntable to the Bellari, but I'm still getting a hum. I have the Bellari going directly into 2 NAD C272 amps running in bridged mode. Anyone had this problem before, or have any suggestions?

Thanks
jwglista
I had that problem and worse. I would get hum in the speakers, it would pick up some sort of music broadcasts that were very faint, I would get this loud thump when shutting off the motor on my Scout...it was a mess. I grounded everything, ungrounded everything...nothing worked. I swapped in a Cambridge phone pre amp, it was quiet. I swapped in a Sutherland Ph3D, it too was quiet. So, either the Bellari was bad or the other two were better isolated. Sad, because I loved the sound of the Bellari.
I also enjoy the sound. I either didn't notice the hum until last night, or it just started. I may try using a ground adapter that plugs into the wall and has only a single wire coming out for a ground connection. I'll leave the ground wire between the Bellari and turntable, but add another wire between the Bellari and the ground adapter. I'm also going to try moving the Bellari around, because it may be picking up some kind of interference from the amps; I can only move it so far though...I don't have super long interconnects.
Wasn't this a problem with certain (read: older) versions of the Bellari? I believe it's a quick fix courtesy of Bellari and something that was taken care of in later versions. Perhaps someone here has more info, but I would definitely try contacting Bellari/Rolls. Good luck.
This is a very common problem, from what my dealer told me, and that it depends on how well isolated you have the Bellari, and other external factors.
I'm noticing that the hum comes and goes. There is no consistentcy here. It may happen for 5 minutes at a time, then I won't hear it for a good hour or so, then it will come back. Very frustrating.