[78-L] TURNING THE TABLES, (was New Cheap Turntable

[DAVID BURNHAM]

JD wrote:

Let me add that I was using an excellent cartridge, properly mounted and that I'm experienced enough in audio and music (a professional in both) to know what I'm doing and certainly what I'm hearing. 

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From your credentials, I assume you would have recognized if this was the problem but the effect you were hearing with your clarinet opening, (Rhapsody in Blue or Tchaikovsky's 5th?), sounds to me like acoustic feedback from the speakers to the turntable.  If you have a good sub-woofer, very low frequencies, even sub-sonics, can travel through your home's structure and you can easily see the tone-arm shaking and you will hear low frequency modulation of the clarinet sound as well as a significant amount of rumble.  I also can't see a turntable designed for the treatment it receives from disc-jockies being able to run smoothly with a high-compliance cartridge.

db