2. amps-preamps
  3. 1146599789

Tube Question--Slight Ringing coming from one side

I am running a pair of Klimo Monoblock amps, EL34 based. I baised them about 2 months ago, pretty much everything has remained the same except I had to move them closer together and closer to my turntable. Within the past 2 weeks, I have noticed out of the left monoblock a slight ringing (not really a ringing, but kind of like the sound of a refrigerator at idle) not at idle, but when the volume is turned up to a conversational listening level. it increases as the volume is raised

I have never experienced this before in this amp or any tube amp I've owned in 20 years. I thought of using a tube damper on the el34, but this is not addressing what may be a problem. Could it be the tubes are ageing? I was able to bias them exactly at factory specs 2 months ago.
justlisten

Showing 1 response by justlisten

justlisten's avatar
justlisten OP
489 posts
 
thanks for your replies...

I had thought it was the EL34s, because I can put my ear to the tubes and hear the ringing coming from the el34s, (all of them), I am using a VTL tube preamp, and will check those tubes.

I really do not think it is mircophonics, I have experienced that before, this is not like that.

It sounds much like an old floor heater and a jingling within the heater...except it is coming from the 6 El34 tubes....
More to discover