Hum Issues - Rega P-25 w/ Grado Reference Platnum


My friend just put a Grado Reference Platinum cartridge on his Rega P-25. As the cartridge tracks toward the center of the records, the hum increases from non-existant to unacceptable.

Is there anything that can be done about this?

Is it possible to put some type of shielding between the motor and the platter? Or perhaps coat the underside of the platter with a copper-based paint to shield the cart from the inductive interference from the motor?

Has anyone else experienced this?

Thoughts?
nrenter

Showing 1 response by jstanton6e67

Any other thoughts out there? the table in question is mine :-) The problem is not unbearable, but the more I talk about it, the more it annoys me. The sound so far, not evven broken in is great, except for the hum torwards the end of the disc. Getting a new cart. or a new table is NOt an option so any help or mild fixes would be great.