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Bye-bye turntable ground loop!
post Jul 8 2002, 06:34
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Posts: 109
Joined: 3-June 02
From: Pennsylvania
Member No.: 2199

Just killed a major ground loop affecting my turntable (Technics SL-D3). As it turned out, there is a little metal tab that goes from the cartridge casing to the Right-Negative terminal of the cartridge output (Shure M-95 ED). The problem with having that way is that the cartridge housing provides another path to ground by means of the screws/headshell/tonearm.

After I pulled that tab out, all the hum went away (which was annoyingly greater in the right channel), and now I'm left with just white noise at about -80dB RMS in both channels.

Life is good... cool.gif

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