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Phono hum

Help! I have a VPI Scout with Dynavector 10x5, Bellari VP129 phono preamp, Anthem TLP1 preamp/tuner and Anthem MCA2 power amp. I have a hum problem I can't get rid of that I didn't have with my Music Hall MMF-5Se turntable. I tried the VPI interconnects (with the integrated ground wire running from the turntable ground to the VP129 ground terminal) and that lessened the hum but it's still there. I also have a loud pop when powering off the Scout motor. The TLP1 has no phono section so I am using the sat/aux input for the turntable. I've run a ground wire from the center screw on the AC outlet to the chassis ground screw on the preamp and that made little if any difference. Any suggestions?
kmulkey
output555
120 posts
 
I have a VPI Scoutmaster with the same cartridge, same problem. The only fix I could find was using a PS Audio GCPH phono preamp. Completely eliminated the hum. Switching power cords, cables, grounds, using RFI/EMF shielding did next to nothing to help. I tried several other similarly balanced phono preamps by Sonic Frontiers, BAT and ARC; none fixed the hum. Horray for the little preamp that could: PS Audio GCPH.
kmulkey OP
173 posts
 
Radrog,
Did you disconnect the ground wire that's built into the VPI interconnect cable, the ground wire that goes from the turntables ground terminal to the phono preamp ground terminal? Or did you disconnect the ground wire that comes from the underside of the tone arm to the ground terminal, the one that was pre installed on the turntable?
jmcgrogan2's avatar
jmcgrogan2
6,346 posts
 
I have a friend who had a very similar setup who had the same problem. He eliminated it by getting rid of the Bellari.

Cheers,
John
radrog
157 posts
 
I am using a regular single ended cable. I am not grounding from phono pre to table.
stevecham
3,340 posts
 
I also got rid of hum by not using the grounding portion of my phono cables from table to phono pre.
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