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

if you search the archives, you'll find many people who have had similar experiences. it appears that the rega/grado combination is notorious for the exact hum of which you speak. i'm not sure if anybody's come up with a solution yet, but you should have a look and check.

There was a Stereophile from way back when that contained an article about covering (part) of the plinth with adhesive mu-metal. It worked, but I don't know whether there was any stubborn residue left by the adhesive. Maybe a Stereophile, Agon, AA or google search could give you more details.

While the P-25 already has speed problems, I'm don't think adding material to the platter would be a good idea. Who knows though, maybe it'll slow it down to what the speed should be. Good luck

Grado cartridges all hum on Rega turntables as they move toward the center of the record. LP12s do the same, but not quite as much. The Grado cartridges are particularly susceptible to the motor’s magnetic field. The only solution is to change the table or the cartridge. They are incompatible.

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.

I'm surprised that TAS didn't title the following article "Two great tastes that *don't* taste great together."

Affordable Gear from Two Veteran Companies

From what is implied in this article, and if I didn't know better, a Rega / Grado combo would be a *huge* bang for the buck. Note that they don't talk about the synergy of the two together.

I'll back Jim up on the sound of his combo (especially with the RB-1000 arm)...it sounds great and is getting better over time (his cartridge is out-of-the-box brand spankin' new). But if this problem is well known, someone *has* to have a tweak / mod to address this issue.

Jim, maybe you should fire off an e-mail to Rega.