Jadis OR bias value for Mullard RL34 and KT88 help


I just swapped my Gold Lion (reissue) KT88 tubes for Mullard EL34's and was vwery surprised that the volume was so much lower. I checked the bias and found it to be less than 10mv while the KT88's had been biased at 110mv.
I rebiased the EL34's up to 90mv and the volume increased to what seemed to be "normal".
I am looking for the correct voltage to bias the new EL34 to in a Jadis Orchestra Reference.
Any help is appreciated.
128x128mattzack2

Showing 4 responses by fraldrete

Hi,
I just blew the main fuse (AC) of my JOR last night when turning the amp on and unfortunately, I have no spares.
Can somebody give me the fuse characteristics and if possible, suggest where to buy them.
Thanks much,
Thanks much Mattzack2,
Based on physical dimension I believe you are talking about the internal fuses which, I was told by Jadis, should be slow blow 0.5A and not 5A.
The one I need is located next to the power cable, easy to reach by unscrewing a fuse holder and about 1-1/2X longer than the other one. I believe this should be fast-acting but I don't know more.
Thank you so much and I hope I'm making sense since English is not my mother's tongue.
Thanks Doctor,
The fuse cover does not have any information and the fuse itself is very difficult to read, I've tried Jadis and their US distributor with no success and my last hope is Joe who has been the "fountain of all knowledge" in terms of audio for me, a great guy
Thank you all for taking the time to help me. My JOR is up and running sounding, really sweet with Chinese EL34s and Teles 12AX7 ribbed plates.