VPI Classic hum


Got mine a few weeks ago. Installed it with a high-output Benz Ace H cartridge. Loved the sound but there was a hum when I turned the preamp volume past the 10 o'clock position. Later changed to a Clearaudio Concerto, the hum was quieter, but wouldn't go away no matter what I tried.

Then I read the manual closely, and it said something about using shielded interconnects. So I tried a pair of Rega Couple wires, which are made from Klotz cable, and are shielded.

And you know what, the hum just vanished! Now I'm at peace ...

Just to share with those have hum issues with the Classic. Do share your solutions.
bassraptor
Epilogue: Mike, the VPI customer service rep, came through 100% as I surmised. I recently sold my Clear Audio cartridges for scrap/re-tip credit. As mentioned above, the Maestro's cantilever disappeared into the Fifth Dimention (not the pop group from the 70s). The Virtuoso's cantilever is bent and/or out of alignment. I definitely must stop loading the effective mass of my tone arm with a brick.

On a more serious note, Mike did some testing of the Classic 1 arm and Maestro combo. He reported back to me that the resonant frequency was 16 Hz, which is too high. This could possibly be the cause of the bass ringing, but I can't say for sure now because those cartridges are history. Anyone reading this post who is interested in installing a Meastro on a Classic 1 arm arm would be well advised to call or e mail Mike at VPI first to learn what tweaks may be necessary to get the combo to work at its top potential.

In addition, it recently came to my attention that the VTA adjustment set screws at the bottom of the Classic 1 tone arm base were loose. I'm currently using a Dynavector 20X2H cartridge. The DV opened up after I tightened the VTA set screws down. Something to keep in mind with the Classic 1. Don't know if the Classic 2/3 is susceptible to the same issue since VTA is adjusted on the fly.

And btw, I haven't got a clue if the source of the bass ringing I heard on the Maestro and Virtuoso in some way related to the VTA set screw issue. As stated above, check with Mike.
This comment is from another OP that I started:

"Final comments: shortly after posting this thread, I sourced a practically new Dynavector 20X2H for my Classic. This cartridge was easy and forgiving to set up and sounded very good, especially "sans" rubber mat. I liked it very much as an all-around cartidge. But that's not the end of the tale.

"Fortunately I purchased the 2M Black from an incredibly nice guy whi is unbelieveably honorable. Upon learning of my difficulties with the 2M, even with full disclosure that the problem might relate to other issues, he offered to take it back with a full refund. In addition, I sold my Clear Audio cartridges for scrap value.

"Now, enter the Zephyr. As luck would have it, one came on the market about a week ago, and I snapped it up. Just got it yesterday. I am amazed at how good it sounds. If anyone is interested in learning about the reactions of other A'gon members, as well as my impressions, there is a thread running that was started by someone else. Check it out.

"Last comment about the DV 20X2H and the Zephyr. I am using the Zephyr as my primary cartridge with the DV 20X as a back-up. Obviously, I like the Zephyr more, hands down. BUT, the DV 20X is so good, I can't part with it. I may need it one day.

"Best to all and a sincere thanks for all the helpful suggestions."
I own VPI classic, the first release from 2010.

Initially the Grado cartridge was installed but it gave a lot of hum
even when the styles did not touch the record surface.
Then the dealer suggested to replace Crado for Benz Micro MC low
output. I chose Benz Micro Wood SL cartridge which was installed and I
use it now.
I still have an issue with the hum. But this time the hum is only when
I place the styles on the record surface and the platter is moving.
When the platter
is not moving and the styles touches the record surface there is no
hum at all. Looks like the cartridge picks up the noise from the
motor.
The hum is quite noticeable during the quite passages, the starting
and ending grooves, the grooves in between the pieces.
Vinyl ..lover, both the DV and Zepher are shielded and I haven't noticed hum from either carty. I would circle back to your dealer. He should know what to do. But if you get stuck, try a Dynavector or SS VPI Zephyr.

Good luck.
Bifwynne,

I emailed Mike from VPI and he responded back saying that the problem should be resolved by proper grounding and using shielded interconnects. I have a ground wire running from the table to phono stage and using JPS Labs ultraconductor interconnects that the dealer confirmed they are very well shielded.
Thanks for reply