well , didn't had time yet to hear , maybe mid next week
though , more interesting Shade iteration already cooked so hardly I'll invest substantial time in pursuing this one
again , my main interest was full IRFP iteration , published on start of this thread - proper Poor Man J2
though , more interesting Shade iteration already cooked so hardly I'll invest substantial time in pursuing this one
again , my main interest was full IRFP iteration , published on start of this thread - proper Poor Man J2
A while back, I simulated using Schade feedback and a hefty output device in an Aleph circuit, but was put off by the (albeit simulated) distortion increasing by two orders of magnitude over the non-Schade version. Never built it.
Will be interested to hear your opinion on the Schade vs. non-Schade versions.
will do that when finishing Babelfish M2/SEF amp
another one having one pcb for 2 different amps
another one having one pcb for 2 different amps
Thanks for the reply ZM, one step ahead all the time with one PCB design to handle the different schematics you have shown so far.
OK, I pulled the Trigger ....... Kits!
and invented (additional new) name , so here it is :
https://www.diyaudio.com/forums/swa...-j2-steroids-fathers-j2-kits.html#post5942472 , .... also known as The Beast with a Thousand Names!
to summarize amp options :
1.Full IRFP outputs - cheap and cheerful surrogate for J2
2.Semisouth down , IRFP up - spooky , insane , low THD
3.Full Semisouth outputs - Not your Father's J2! , same but different one
4. Full IRFP outputs , lower one in Shade connection - crazy Weakling , will investigate further how to make it sweeter and lesser Weakling
that's it for tonight , sleep well ........... 🙂
and invented (additional new) name , so here it is :
https://www.diyaudio.com/forums/swa...-j2-steroids-fathers-j2-kits.html#post5942472 , .... also known as The Beast with a Thousand Names!
to summarize amp options :
1.Full IRFP outputs - cheap and cheerful surrogate for J2
2.Semisouth down , IRFP up - spooky , insane , low THD
3.Full Semisouth outputs - Not your Father's J2! , same but different one
4. Full IRFP outputs , lower one in Shade connection - crazy Weakling , will investigate further how to make it sweeter and lesser Weakling
that's it for tonight , sleep well ........... 🙂
Perhaps that is because O.H. Schade does not like your misspell of his name. Gives you shady sound.
Gut feeling, R126 has to be <330 or the amp is only good for grandads. R128/R126 ratio could be between 30 - 200. 🙂
it's funny which way brain can blimp ...... German was language I was learning in first 10 yrs of my schooling and I know that sch is sch ...... but I wrote it wrong on first graph and just maintained same mistake
as I said - will check more thoroughly Schade connection in few days , hopefully getting more power and mellower THD Spectra
tnx for thinking , always 🙂
as I said - will check more thoroughly Schade connection in few days , hopefully getting more power and mellower THD Spectra
tnx for thinking , always 🙂
our dear Gerd is having scheduled some heart plumbing re-do in two weeks
so , we can all root for him , wishing him speedy recovery after
so , think of him in next few weeks , supporting some Good Karma
now , root!
it's 15th
🙂
Me too. Hope that the outcome is as successful as was mine and that you are soon home again. [Your ginger 'assistant' needs you to tell him where to solder those caps!]
Good Karma and wish the procedure goes well! Hope to see you back on your soldering iron soon Generg!
well , ZM making a mess again ...... even with best intentions
I just got word from Bruder Gerd - they send him home today , needing some additional blood testing .... so Knife Time is postponed
even Vampires becomes reluctant , in modern era
what's good , he's in shape that things evidently aren't so urgent ......... 🙂
I just got word from Bruder Gerd - they send him home today , needing some additional blood testing .... so Knife Time is postponed
even Vampires becomes reluctant , in modern era
what's good , he's in shape that things evidently aren't so urgent ......... 🙂
ZM,
In your three iterations is H2 negative or positive, going with Papa's way of defining it?
How likely is that I will I get a similar spectra to your posted ones. Should I be concerned that my two channels might not have matching spectra? I am planning on using SS at the bottom from the twin pairs I have bought from Patrick/EUVL. If THD spectra a bit different how can each channel be adjusted?
What VCC+/- is recommended?
Are the parts in your complete kit labeled eg resistor to resistor position or are they all together and have to be sorted by the user?
I like the way you have structured and explained this project so that the user can try different iterations and learn from them and make their own personal choice. Thank you.
nash
In your three iterations is H2 negative or positive, going with Papa's way of defining it?
How likely is that I will I get a similar spectra to your posted ones. Should I be concerned that my two channels might not have matching spectra? I am planning on using SS at the bottom from the twin pairs I have bought from Patrick/EUVL. If THD spectra a bit different how can each channel be adjusted?
What VCC+/- is recommended?
Are the parts in your complete kit labeled eg resistor to resistor position or are they all together and have to be sorted by the user?
I like the way you have structured and explained this project so that the user can try different iterations and learn from them and make their own personal choice. Thank you.
nash