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Old 7th December 2017, 09:17 AM
FreddieT FreddieT is offline
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Join Date: Jul 2011
Location: Southampton Hampshire UK
Posts: 93
Default Re: Kit 34 tubes change bias

Hi Aro.

Have you tried relocating the amp (not always easy I know) as I'm beginning to suspect you might be picking up Radio Frequency (RF) impulses with 1 second repeats. This could be via the speaker wiring or the mains wiring or directly through the ether.

Is the amp near a broadband router?

You state in your last post that the buzz is independent of volume and input setting which implies something external may be causing the buzz.

I note you are in Portsmouth. I'm not far away but if you wanted I could pop over and take a look. It can't be this side of Christmas as I'm busy but January is quieter.

F.
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