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RE: Reducing emi in turntable motor

Posted by Lew (A) on July 7, 2015 at 17:43:36

In Reply to: RE: Reducing emi in turntable motor posted by prem on July 2, 2015 at 07:50:41:

You might also consider installing an actual shield between your EMT motor assembly and the underside of your platter. Even using a copper platter mat may have some benefits. But do you perceive an actual problem that needs "fixing", or is this just audiophilia nervosa, from which we all suffer?

Because I did hear such a problem with my Kenwood L07D, I did install a shield made of "TI Shield", a commercial product that blocks both EMI and RFI. It works. Unfortunately for all of us, TI (Texas Instruments) stopped making TI shield. For EMI, mu metal would do.

I have searched the internet high and low for actual science that says quartz crystals per se can absorb EMI, and I have yet to find it. It seems to be a general gospel among audiophiles, however. I don't dismiss the possibility, but I would like to see the science.

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