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What causes microphonics in a tonearm?

Several tonearms i'm considering have been accused of being susceptible for microphonics. The tonearms in question are the Pro-Ject(Oracle Paris-RPM 10.1)Rega(P9) and Rega based(OL) tonearms. Is the poor quality stock tonearm cable responsible or is this a design flaw? As always I appreciate your comments.
dayglow
buconero117
2,311 posts
 
Acoustic energy flying around the site of the tt. Put an acoustic screen around the tt, or better yet, move the tt to another room and I think you will see microphonics disappear.
rrog
1,958 posts
 
"or better yet, move the tt to another room and I think you will see microphonics disappear."

Try another location in the same room. One more reason your electronics should not be between the speakers. 2/3 of the way down the side wall from the speakers should do it.
wolf_garcia
6,695 posts
 
I stuck my "used but clean" Linn Basik/Akito on a light but stable table by itself...as the instructions instructed (after initially ignoring said instructions and learning they actually know what they're doing). The resut was as predicted, and has stopped my quest for a better TT right there. Sounds amazing, and it stays until it blows up.
dayglow OP
1,901 posts
 
With my current set up I won't be able to isolate the turntable on a dedicated stand. Is vibration from the plinth more responsible for microphonics then the damping capabilities of the tonearm?
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