Thanks for the replies. So if it is indeed microphonics, what options do I have to eliminate it. The ringing is pretty annoying. Even when no music is playing and the tube preamp is left on, the ringing will occur sometimes. Am I correct to assume that I will have to switch out my tubes for ones that are not microphonic? Also will Herbe's Hal-O dampers help?
Tube Whine noise...Please Help
Hi everyone.
As a newbe to tubes I am having a problem that I need some help on. I just received my Musical Design SP-2 preamp and while it sounds wonderful, occationally there is a high frequency whine/whistling noise coming from one or both speakers. The SP-2 uses 2 6922 that the previous owners said were NOS RCA types. I want to know if the tubes went bad and needs replacing or if there is another problem that I need to look for. Thanks
As a newbe to tubes I am having a problem that I need some help on. I just received my Musical Design SP-2 preamp and while it sounds wonderful, occationally there is a high frequency whine/whistling noise coming from one or both speakers. The SP-2 uses 2 6922 that the previous owners said were NOS RCA types. I want to know if the tubes went bad and needs replacing or if there is another problem that I need to look for. Thanks