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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

Showing 2 responses by ossicle2brain

ossicle2brain's avatar
ossicle2brain
107 posts
 

Welcome aboard John.  Have you tried turning off the motor and seeing if it stops?

Getting a test record really helps with this stuff.  It will have a track of unmodulated grooves that's made just for checking stuff like this.

It could be the motor or the belt or just groove noise.  In between tracks it sometimes goes up it seems until there is some music information.  Try taking the belt off and spinning by hand with motor off.  

 

ossicle2brain's avatar
ossicle2brain
107 posts
 

My guess is that is normal motor noise. It stops when you stop the motor. And with the lid up it’s resonating and amplifying that hum.  It would do that less with the dust cover down which is where they should be while playing IMO.

It’s why I moved my motor to a sub plinth. Try taking the belt off. Place the needle on the record and turn on the motor. If that’s when you hear it, it’s the motor.

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