Re: Biasing JJ E34L valves

Pete wrote:

Why do you feel it is *necessary* to have to push these tubes in that
manner to get any kind of decent tone?

I'd like to know the answer to that as well.

If these EL34's cannot be operated
within safe parameters ( safe for the amp) and provide a usable sound
output, I wouldn't even bother with them.

I agree. What would you recommend as a safe maximum for the amp, btw?

EL34's are not the be-all end-all
of vacuum tubes. 6L6GC works just fine in there, and you DON'T have to
modify
the bias circuit. That works for me.

Would I need to change the NFB resistor or any caps for the tone
stack? I assume the screen grid resistors will be fine at 1k 5W. If
I don't find an EL34 I like in this amp, I might go with a KT77,
assuming I don't need any modification.
.

Relevant Pages

  • Re: Biasing JJ E34L valves
    ... manner to get any kind of decent tone? ... within safe parameters and provide a usable sound ... What would you recommend as a safe maximum for the amp, ... two versions is the absence of the zener in the bias trim circuit. ...
    (alt.guitar.amps)
  • Re: electrical question!?!?!
    ... The only thing you could do that would be proper and safe, ... tight outlet for the camper... ... 40 amp circuit breaker feeding that air conditioner unit. ...
    (alt.home.repair)
  • Re: 5u4g instead of gz34 ?
    ... The heater current alone is 3 amp .. ... No it is not safe to make that assumption, the 5U4G filament will draw 3 ... amps no matter what the load is, ...
    (rec.audio.tubes)
  • Re: Few very basic Electrical questions
    ... The 15 amp ones will most likely ... work fine and be safe but they are not "to code". ... Incorrect. ... It's time to throw all their damned tea in the harbor again. ...
    (alt.home.repair)
  • Re: Take 2 inputs into the shower?
    ... Is it safe to plug two guitars into an amp that has two ...
    (uk.music.guitar)