Big Bad Boob wrote:
=================
Phil Allison wrote:
FFS give up posting wild guesses as fact.
which ones?
** All of them.
It's not like I haven't built a bunch of guitar amps since I was a
teenager, both tubes AND transistors, nor seen a number of schematics,
nor reverse engineered a Fender amp to build a custom amp based on
Fender's circuits because someone wanted me to, nor having played guitar
since the 1960's, nor having re-worked the electronics on guitars a few
times [including putting a 5 pos switch on a Hondo strat copy that had a
3 pos switch for a friend], yotta yotta.
** Fraid you have no learnt much.
OK - which of the things I said were "wild guesses" ?
** The whole lot.
keep in mind that the tech manuals said something I'm agreeing with.
YOU are disagreeing with the tech manuals,
** Never said any such thing.
A typical old amplifier:
http://www.thevintagesound.com/ffg/s..._5c3_schem.gif
(in this case 75k - I've seen as high as 220k, but on average, input
resistors on the shared input are around 100k, which if you think about
it, isn't a whole lot different from 75k or even 68k when you average it
all out)
** Average of what? Not amps sold for sure.
Vox, Marshall, Fender, Peavey, Music Mann and countless others ...
shows volume and tone controls are 250k. I have seen as low as 50k, but
typically 100k as I recall.
** With a 10 kohm source (at 50/60 Hz) and turned to half value = what?
My guess ..
** Another wild guess ????
And I still accept what the tube spec sheet says
** You have no ****ing idea what that 50s doc refers to or if it has any relevance to guitar amps or modern examples of 12AX7s.
FYI
I have 50 years experience designing and repairing guitar amps plus LOTS of other types of audio gear - including tube condenser mics.
You came here on a damn silly notion & got an expert who pointed that out.
You get to like or lump it.
...... Phil