VPI Classic hum

Macster, so what is the source of the problem?

The motor and I know that it's a "duh." But I will elaborate more after my parts are in. I would "highly" recommend that anyone who has this problem to work with VPI and the dealer to resolve it. Once my table is finished, we'll be certain of the "fix" as I have my Goldring GL2500 in it and it was humming with the motor turned on, with the arm down on the record. When you turn the motor off the hum stopped.

Again, the whole approach on this is to find the problem and fix it. If you think about it installing a shielded cartridge does not solve the problem. If you want you can email me @ blkmacster@nosapam.cox.net, of course remove the nosapam.

96% of the hum is gone. No hum at all just listening to records through the phono section. I still get some (albeit at a very low tolerable level through my headphone jack) Cost $140.00 for a new motor. I'm still in the process of listening to a variety of records and checking things out.

What was the problem with the motor?

Vibration, which is picked by the stylus and transmitted through the phono section. If you remove the motor from its mount the hum (resonance) goes away. My motor vibrated a lot compared to the other motors that we checked. We had gotten it to the point that you couldn't hear the resonance through the phone stage, however when we connected my tape deck and monitored the source it was very audible. It was also very audible on the tapes that I made. I'm thinking that a stethoscope would be very useful in trouble shooting this. A shield cartridge may mask the resonance problem. If nothing else it cost very little to check the motor vibration out before springing for a cartridge.