Just remembered amp is fed by single ended power supply.
Keep thinking it's dual rail.
Dumb brain.
Keep thinking it's dual rail.
Dumb brain.
same as saying : Papa has not reached my level of Sissy yet at riding of Rhinoceros.....
just remember - when Papa goes wild , result is XS amp
so , his wildness is , contrary to ours , equally fruitful and effective
😀
~ 350VA that less if compare with 800VA toroid of Your M2 Koan.
Fat donut more yummy sound frankly ?
Or is
of PSU more important..
nope
F4 Koan is 800VA Donut , separate secondaries for channels
M2 Koan having 250VA Donut per channel
DEFiSIT Koan having , say, 170VA Donut per channel
think about idle dissipation of each of them , same as of dynamic behavior ...... I didn't skimped anywhere ..... pretty much going I'm Rhinoceros Rider route each time
F4 Koan is 800VA Donut , separate secondaries for channels
M2 Koan having 250VA Donut per channel
DEFiSIT Koan having , say, 170VA Donut per channel
think about idle dissipation of each of them , same as of dynamic behavior ...... I didn't skimped anywhere ..... pretty much going I'm Rhinoceros Rider route each time
I'm not worried about C1 or C2 b/c impedances are so high after them. Just trying to learn.
(I am worried about C5/6, but then I never heard an output cap in front of the speakers - so my worries are probably unfounded)
you can build ACA in most crude way , for few afternoon hours
in ACA thread there are even few recipes how to implement other input JFet , instead of Toshiba , as sole part you can't find in nearest Tobacco store
that would give you proof of concept , in way of first hand experience
in ACA thread there are even few recipes how to implement other input JFet , instead of Toshiba , as sole part you can't find in nearest Tobacco store
that would give you proof of concept , in way of first hand experience
ZM ,
What about a spooky Sony or Tokin THF-51S V-FET DEFISIT ...for those who have them 😉 ?
What about a spooky Sony or Tokin THF-51S V-FET DEFISIT ...for those who have them 😉 ?
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An externally hosted image should be here but it was not working when we last tested it.
Victor drivers ?
Hello CeeVee. The two FETs in DEFiSIT have been "hand-selected" from many pieces of SIT-1 and P-MOS. They have identical [-Vgs], identical but opposing temperature coefficiencts for thermal stability, and possibly identical but opposing microAmp gate currents which cancel to zero, plus many more identical characteristics. DEFiSIT is one of a kind pair of FETs which operates push-pull and has a $$ value equal to or more of their sum weight in Platinum metal.
DEFiSIT is highly protected with a thermistor to limit its in-rush drain current, and a blocking capacitor at its power output; which also protects the loudspeaker, plus a Zener across Vgs.
DEFISIT is a superb piece of technology and the insides of its amp are art.
...Yep i know i am dreaming....thanks for bringing me back to reality .....Papa takes his art to the limit of simplicity just to show us what he can do and what we canoget.....i hate ZM......
sometimes.......
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quick glance on U-I graph is showing that thingie can be squeezed in M2-like circuit ...... back of napkin calc is predicting that there is volt or so of space between gates, where we can squeeze transistor part of optocoupler
that's on paper ; for developing thing in vivo , one needs to have Tokin , rest of parts , decent measuring setup and plenty of time ....... mostly to play with values of source resistors ...... to achieve best tempco behavior ( OK - optocoupler is really magical part there) and adequate THD spectra
I don't have Tokin , and always lacking in time 😛
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....Yep i know i am dreaming....thanks for bringing me back to reality .....
Papa takes his art to the limit of simplicity just to show us what he can do and what we canoget.....i hate ZM......
sometimes.......
Eric Idle & Chorus - Always Look On The Bright Side Of Life (Monty Python's Life Of Brian Soundtrack) on Vimeo
..On the other hand you have fantastic proper disposal machine for Drek....heheheh
@ Soundhappy
Just seeing Nelson Pass doing his magic is the brighter side of life......but i still hate ZM.
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It's a difficult amp to provide for, as the matching is tight and a tedious
process is involved there.
Hahahaha.
There is a cure for this.
Just call him a bastard on a daily basis.
It seems to work for me.
Now we are lovers. Hahaha