Ground Hum with Rega RP6, Exact and TT PSU.

Any resolution of this problem yet? I are curious.

Iwal22 I'm out of town right now but when I get back I'm going to check the ground. Can you see this easily or is it hidden? I've had my tone arm off don't remember seeing this ground.

crazyeddy,

Roy Gandy of Rega Research has always believed in stiff, rigid and tend to a lighter weight turntable designs. Adjustable VTA will reduce stiffness and rigidity at the tonearm base. All Rega tonearms are grounded. The ground is attached to the LEFT channel neutral lead. This effectively grounds the turntable appropriately.

Rega on almost all of their tone arms are made in ONE piece aluminum extrusions and are by design TRUE/SQUARE and have no need for any azimuth adjustments. Each arm is inspected before installation on any Rega turntables or sold as separate tone arms. Rega sees no need to compromise rigidity of the tone arms with any azimuth adjustments.

Since most Rega buyers are less likely to swap out cartridges there is no real need for a VTA adjustment set up using either a grub screw or a adjust on the fly set up. Rega and 3rd party makers offer various shim type set ups to tweak the VTA to a cartridge that falls out of Rega’s cartridge design for cartridge height. One can buy a VTA adjuster that will do near on the fly VTA too. But Gandy and his engineers fear these reduce rigidity at the arm base.

My new Planar 3 has a Denon DL-110 mounted to the arm and the DL-110 is 2 or so mm taller than the standard Rega choices. It will ride tone arm slightly tail down as a result and it did not make much an issue sound wise to my listening. But I am anal enough to have concocted a DIY shim set up. I gathered 9 small metal flat washers. Stacked them in stacks 3 high, super glued each stack to make 3 shims about 2+mm tall. I drew the arm screws up and fitted these the DIY shims under the RB-330 3 point mount setup then screwed the arm back down its base. TA DA my RB-330 with DL-110 essentially rides parallel to the platter surface. Did it make a big change in sound? Well a bit but no not really too much, but I guess it settled down my anal retentive side on this issue.

It did give me a minor new issue. The arm sits higher now and dust cover closed touches the counter weight. I do wish Rega would make their dust covers a few mm’s taller. But I made a good DIY fix for it too. I found a small credit card sized flat piece of black hard rubber about 3mm thick. I took a craft knife and a steel ruler and made a clean 3mm wide strip cut. I then had a strip that was 3mm thick x 3mm wide x by 8 cm long. Then I cut this strip into FOUR, oh 2cm long pieces. I then carefully super glued the four pieces at each corner of the dust cover base taking care to indent the two rear pieces about 1cm in from the back of the dust cover base so the pieces would not interfere with the opening and closing of the dust cover. Now the dust cover clears the counter weight when closed. You hardly notice these black rubber tabs, they do not scratch the plinth either. Yes, you lose a more air tight seal at the base of the cover but meh its not a big concern. One can use an eraser cut into little tabs as such and glue these to the dust cover base if need be too. But again YES, if Rega would just make their dust covers 3-4mm. taller, there would be no clearance issues in most/all cases.

Greetings again.

After trying everything discussed lately there is a chance that I will return the table and exchange it for something else. My dealer has been very gracious through the whole process and will take the table back if needed. He even stopped by my house this morning and agreed that the hum is unacceptable. We have exhausted every possible scenario and even one of his RP3 in the store hums using an Elys 2. 

As I mentioned earlier I really like the sounds of the table and with music playing you don't notice the hum even during quiet passages. My wife who has an incredible ear also loves it.

As far as their design some folks complain that you can not do a lot of adjustments and since I have a Rega cartridge this remains a non issue. If I decided on another cartridge there are shims available to adjust the VTA. 

The questions remaining are: Do I like the table enough to deal with the shortcomings  or look at something else??

My dealer's other options are Music Hall, Project and The Marantz TT-15 S1. The latter sounds fantastic and it's pretty much a Clearaudio with a very expensive cartridge and tonearm. 
The other two can be purchased in packs or super packs depending of the table/cartridge package. 

I would keep it in the same price range and here we go again. 

Anyone has had experiences with the models above?? I have read lots of positive comments about the Marantz and I am looking for musicality not HI-FI jargon. Thanks again for your patience and comments.