2. tech-talk
  3. 1233160505

Whirring, whistling sound from left speaker

When I turn on my preamp and amps, but with the preamp in mute mode, I hear a whirring, almost whistling-like sound from the left speaker for about 1 to 2 minutes. This happens whether I have a power conditioner connected to the amps or not. I have independant circuits in the house for the system. Both the preamp and monoblock amps are tubed. Any ideas why this is happening and whether it is something I should worry about?
znak_m

Showing 1 response by vvrinc

vvrinc
323 posts
 
In my experience, this is a sign that a tube is failing and about to die. If it's a multi-tube preamp, for instance, you have to remove and replace until the troublemaker tube is identified. Same for amp if the problem is not with the preamp.

Good luck,
8^(
More to discover