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Rega Turn Table Hum

I have a P5 and have recently noticed that once the arm/cartridge is at the last song nearing the lable, EMF hum is being introduced I believe from the motor into the cartridge. I never noticed it prior to instaling a groovetracer subplatter, but according to my local Rega dealer they have experienced it using the standard plastic subplatter supplied with the TT.
I would be very interested in hearing from any fellow Rega owners that may have a corrective action to eliminate the hum.
I recently came across (Direct Music Web) a product called ERS cloth which is suppose to block RFI (Radio Frequency Interference) and EMI (Electro-Magnetic Interference). ERS cloth is a blend of carbon fibers coated with proprietary metals that make it virtually impenetrable to RFI. It comes
in 8"x11" sheets.
If any one has any experience with the ERS cloth I would also be gratefull for your input.

Thnx
Brad
bradf

Showing 3 responses by mickeyf

mickeyf
153 posts
 
Is it a Grado cartridge by any chance?
mickeyf
153 posts
 
I've heard of the ERS cloth. You could probably start experimenting with various shields, lead sheet or even tin foil slid under the subplatter FWIW and see what happens....
also try turning the cartridge clips a little bit to adjust your contact, there may be a ground issue too. There's a lot of other things you can try including chnaging receptacles to a different circuit (start with an extension cord). TT different from the other gear.
mickeyf
153 posts
 
quote Theo: I found that if I took the ground from the right channel connector and grounded it to a seperate ground it helped

Could you explain in a little more detail how you did that?

Grounding the Lehmann may also help. And you might remove and reinstall the oe subplatter if the metal of the gt is amplifying the hum.
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