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DIY & Tutorials
DIY For Audio
401 Build
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<blockquote data-quote="mafioso" data-source="post: 66968" data-attributes="member: 572"><p>Hi</p><p></p><p>It should be very quiet. On a recent part cleanup of a 401, I could only pick up a very slight motor hum (tt was not connected) and this was using a stethoscope. If the idler wheel is not perfectly round, you will get some transmitted noisewhich is difficult to describe. I may have mentioned this before but all my 301's and also the 401, originally needed a bit of fractional scimming (on my lathe) to remove glazing and a new, perfectly round and flat edge for contact the the platter's inside.</p><p></p><p>mafioso</p></blockquote><p></p>
[QUOTE="mafioso, post: 66968, member: 572"] Hi It should be very quiet. On a recent part cleanup of a 401, I could only pick up a very slight motor hum (tt was not connected) and this was using a stethoscope. If the idler wheel is not perfectly round, you will get some transmitted noisewhich is difficult to describe. I may have mentioned this before but all my 301's and also the 401, originally needed a bit of fractional scimming (on my lathe) to remove glazing and a new, perfectly round and flat edge for contact the the platter's inside. mafioso [/QUOTE]
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DIY & Tutorials
DIY For Audio
401 Build
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