Hi I acquired a pair of acoustat monitor x servo amps and am looking to replace the tubes. The issue I am running into is I am not able to find any information on what to use for values when biasing the new tubes. Would appreciate anyones help in this matter. They are original servos so the run the 6hb5 tubes
No responses. hmm. Well I have several of these amps(2 pairs) in service and my understanding is the circuit is self biasing. I've had only one tube fail in the years I've owned them however I have replaced them all once even though they were functioning well just for insurance. The one I replaced and the rest of the others I did not match with no consequence. They all sound identical and great as they should. No abnormal behaviour for years since.
Check with the acoustatanswerman.
https://www.diyaudio.com/community/members/acoustatanswerman.168330/
https://www.diyaudio.com/community/members/acoustatanswerman.168330/
