Jose Plexi mods

[Spencerleehorton]

I’ve made the transition over to SLO50 now and everything sounds pretty good apart from the bias, I changed the dual bias to this version


Can’t seem to dial in the left hand EL34?
I have several different tubes so will move the tubes and see if the problem swaps sockets or stays where it is.

 

[Spencerleehorton]

Have got two JJ EL34 and have got 35mv on one and 28mv on other with the above bias, will try changing bias again to dual bias.
Going to change the 1uf cathode caps to 2.2uf to bring a bit more bottom end back as there doesn’t seem to be much bottom end, when I turn the bass pot nothing much happens.
Will try and improve the OD channels noise floor.