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Turntable Thrumming

I'm a new member and have been following the forum for a while.  It's a pleasure to read the learned insights of the members and get information on a wide range of subject matter.

 

I recently bought a Pro-Ject X2B turntable and am generally pleased with its performance.  But I've noticed a low thrumming sort of sound.  Not really a hum or a rumble, just a low frequency low cyclic rate sound.  It's not very loud and only discernible during quieter passages of music or between tracks.  The turntable sits on a very heavy acacia wood table.  Any thoughts on the source of this sound?  Also, any advice on record weights and better feet for this turntable?

 

Thanks,

John Cotner

New Ulm, MN 

jrcotner
jrcotner OP
68 posts
 

Thanks for the info.  The noise seems to be around 0.5 Hz.  The sound is gone when the motor is off.  I'll try removing the platter and belt to see if the noise is associated with either of those.  And a test record should be on my wish list.

noromance's avatar
noromance
9,769 posts
 

Clean (and inspect for anomalies) the belt, platter, and pully with alcohol. Remove perspex lid if applicable. 

three_easy_payments's avatar
three_easy_payments
2,097 posts
 

The noise seems to be around 0.5 Hz. 

Do you mean 0.5 khz? Humans can't detect sounds at 0.5 hz.

 

 

jrcotner OP
68 posts
 

It is cycling at about one cycle per two seconds.  The actual sound is probably 500 Hz or so.

jrcotner OP
68 posts
 

I started working from the amp to the turntable to find the noise, and discovered that once I removed the lid from the turntable it went away.  I had played records with the lid up, which seems to have amplified the noise. 

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