My experience with tubes both in my monoblocks and in guitar amps is that they always sound constrained when you first turn them on and they open up after they warm up (the character change of the el-84s in my guitar amp after the first set of warm up is huge). Is the constraint persistant? Another possibility is that you got used to the looser sound of partied out tubes and your ears need to readjust
Burn-in time for 6550c tubes ?
Hi:
I have just re-tubed my CJ Premier 8 amps with brand new Svetlana 6550c tubes, having old and rusty Sovtek 6550 tubes before.
I have just droped-in the new tubes, and biased the amp accordingly - sound thru the Premiers is now more linear but constrained.
Is this normal?
Do the new 6550c tubes need of a burn-in phase?
How long?
Please consider that all input drivers are quite new (less than 3 months).
Thanks for your valuable input.
Fernando
I have just re-tubed my CJ Premier 8 amps with brand new Svetlana 6550c tubes, having old and rusty Sovtek 6550 tubes before.
I have just droped-in the new tubes, and biased the amp accordingly - sound thru the Premiers is now more linear but constrained.
Is this normal?
Do the new 6550c tubes need of a burn-in phase?
How long?
Please consider that all input drivers are quite new (less than 3 months).
Thanks for your valuable input.
Fernando