Bottlehead Forum

General Category => General Discussion => Topic started by: d_composer on March 28, 2018, 03:10:45 PM

Title: Ringing tubes
Post by: d_composer on March 28, 2018, 03:10:45 PM

I have an Eros Phono pre-amp and a Stereomour II and today, while listening to Metallica’s “...And Justice For All”, at a volume worthy of listening to this LP, I started hearing a loud ringing in my system. Could this be caused by sympathetic vibrations of the tubes (it seemed worse when there was a lot of palm muting on the guitar track)? Or is it simply feedback through my Ortophon red? Either way, does anyone have any tips to quiet the ringing? Thanks!

Title: Re: Ringing tubes
Post by: Paul Birkeland on March 28, 2018, 03:23:47 PM

The first thing to try would be swapping to a different source to remove the Eros/TT from the system.

EF86s can get a little microphonic, and you may also end up needing to remove the springs from the tube shields if that's the issue you end up having.

Title: Re: Ringing tubes
Post by: Doc B. on March 28, 2018, 04:30:52 PM

How close is your Eros to your speakers?

Title: Re: Ringing tubes
Post by: d_composer on March 29, 2018, 01:38:36 PM

Right smack dab next to the speakers. So that’s what’s doing it? Would a tube ring or something similar do the trick?

Title: Re: Ringing tubes
Post by: Doc B. on March 29, 2018, 01:48:25 PM

Move it and your turntable as far away from the speaker as possible. That is a recipe for trouble.