diezel&gas":2z06alhx said:
I still have to decide which new set to get.. El34, E34l, or kt77 as suggested by Diezel.
I like the distortion of the el34 and I also wanted to try the e34l... I fear to be disappointed with the distortion of the kt77... But I also trust the suggestion for reliability of Peter as well... A though decision indeed
I truly believe that you're spinning yourself out of complete control at this point over frequent minutia regarding this subject matter.
You speak here of three power tube (PT) types. I will add they are common PT types that are easily accessible by many different vendors worldwide.
There's no need to "fear" anything about the testing and gaining knowledge over a "personal" observation and the outcome of a PT's performance.
More than four (and more) years ago the "best" (recommended) PT for the Diezel Herbert was the Ruby EL34B-STR. This PT is a very fine PT, stands the test of time, performs and sounds fantastic in any Diezel Herbert. I still have five sextets of them and I use them to this day as backups quite frequently when waiting for JJ PT replacements.
If you'd like to spin yourself into more minutiae, then I suggest you begin to furthermore contemplate and ponder the grade or the rating of the PT. As in what may be the most "preferable" plate current (PC) and transconductance (TC - the reciprocal of resistance) of your PT. You may prefer a PC = 51 with a TC = 3550. Or the next day or two you may prefer a PC = 32 with a TC = 2780. Possibly the following week you may think to yourself "self, maybe I was all wrong and I need to re-examine my logic here. I should have initially tried a PC = 41 with a TC = 3169 . . ."
Think about what you're doing. You've a superb guitar amplifier, and in my opinion one of if the finest hand crafted/built guitar amplifiers available for public consumption. It's simple, effective and built to last a lifetime while one hones in and continue to take pleasure in their musical aspirations. However you won't acquire this masterfully engineered piece of guitar equipment without paying for it.
Therefore the obvious next point might be: You've paid dearly for a wonderful piece of guitar equipment that has been designed by a brilliant audio engineer. It has been constructed, tested, deconstructed, rebuilt more times than you or I could possible fathom and now you're wrangling over a $15-20 part! A part that the OEM has spent countless hours scrutinizing and concluding what is best sonically for his creation.
For the amount of $ that was invested in purchasing this fine guitar amplifier one would think that the notion of acquiring three matched sextets of EL34, E34L and KT77 PTs for a conclusive testing purpose wouldn't break the bank! If this simple effort will break the bank, then one is not prepared to invest in a Diezel guitar amplifier.
Quite frankly, unless you're exclusively a studio recording guitarist, then in a live performance the audience (9:10) won't notice any difference relating to what has been discussed here.
There's an old wise Spanish axiom that goes "El tesoro de un hombre es la basura de otro hombre".
diezel&gas":2z06alhx said:
Is this the bias for a single tube, isn't it?
To get the pair bias is it only needed multiply the value by 2? Or there are other calculations to apply?
Comprehension my friend . . .
Black Sabbath":2z06alhx said:
A quick and general overview of the most common (single) tube types for use in the Herbert:
I should have included the adjective "
power" after the adjective "
single" and before the noun "
tube" to be precise.
Que tengan todos un buen dia.
What about KT77's?
