2. amps-preamps
  3. 1411822537

"Buzz" Coming Through Speakers

I have a Audio Research SP16 tube preamp. I recently noticed that without any music being played (or during quiet music passages)there is an irritating "buzz" coming from the speakers. Since the tubes had considerable play time over several years, I replaced the tubes. However, the "buzz" continued. In the past, changing the tubes resolved the problem. But not this time.

I would appreciate any thoughts you might have. Thank you so much.

Kit
kitjv

Showing 1 response by almarg

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almarg
9,670 posts
 
In the past, changing the tubes resolved the problem. But not this time.
It appears that the line stage version of the SP16 uses three 12AX7's, and the version which includes a phono stage uses three more. Not sure which version you have, but in any event it may be worthwhile to try swapping the tubes around among the various locations in the preamp.

Regards,
-- Al
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