I found this simplified schematic in my files and believe it was a little teaser from Nelson. Has anything else ben done with this circuite? I know it would need a ccs and some bias network but would a Edcor 600:15k be ok for the transformer and what value cap would I need with it?
Attachments
read everything DEFiSIT
say this - Most Greedy Boy, of them all... or (there is no) DEFiSIT of Papa's Koans
edcor 600:600 or 600:15K
470uF jobbie is a killer
CCS is a CCS is a CCS
IRFP150 controlled with small bjt , as usual
say this - Most Greedy Boy, of them all... or (there is no) DEFiSIT of Papa's Koans
edcor 600:600 or 600:15K
470uF jobbie is a killer
CCS is a CCS is a CCS
IRFP150 controlled with small bjt , as usual
As usual ZM is tuned into my subconscious.
Just because he loves it so much, the Edcor 600:15K is the
voltage gain stage for very-soon-to-be-released DIY Sony VFET
amplifier.
Listening done, Curves run, part list printed out.
Machinists are carving heat sink metal as we sit here, and final artwork
is ready to go out the door for quick turn-around.
I tried to make it more complicated and obscure, but it's just not in me.
The first offering will be 200 channels using P chan VFET and then 200
of N channel.
Those out there with VFETs already will be able to get kits without that
part.
Just because he loves it so much, the Edcor 600:15K is the
voltage gain stage for very-soon-to-be-released DIY Sony VFET
amplifier.
Listening done, Curves run, part list printed out.
Machinists are carving heat sink metal as we sit here, and final artwork
is ready to go out the door for quick turn-around.
I tried to make it more complicated and obscure, but it's just not in me.
The first offering will be 200 channels using P chan VFET and then 200
of N channel.
Those out there with VFETs already will be able to get kits without that
part.
I am your subconscious .
so,let's Babefish it:
.......
Wizzard is still Wizzard, even if slower than Snail
As usual ZM is tuned into my subconscious.
Just because he loves it so much, the Edcor 600:15K is the
voltage gain stage for very-soon-to-be-released DIY Sony VFET
amplifier.
Listening done, Curves run, part list printed out.
Machinists are carving heat sink metal as we sit here, and final artwork
is ready to go out the door for quick turn-around.
I tried to make it more complicated and obscure, but it's just not in me.
The first offering will be 200 channels using P chan VFET and then 200
of N channel.
Those out there with VFETs already will be able to get kits without that
part.
Time to abandon all that silly KISS philosophy. Ten different feedback circuits with backups minimum should do the trick. Full Japanese retro circuits with as many transistors into stuffed boards as possible, with some dangerous, toxic and inaccessible deep in the chassis but essential to performance.
As usual ZM is tuned into my subconscious.
Just because he loves it so much, the Edcor 600:15K is the
voltage gain stage for very-soon-to-be-released DIY Sony VFET
amplifier.
Listening done, Curves run, part list printed out.
Machinists are carving heat sink metal as we sit here, and final artwork
is ready to go out the door for quick turn-around.
I tried to make it more complicated and obscure, but it's just not in me.
The first offering will be 200 channels using P chan VFET and then 200
of N channel.
Those out there with VFETs already will be able to get kits without that
part.
Good news indeed. Looking forward to the journey.
pick your own poison
Papa is much more laughing when using cheapest possible part , with great result
just imagine his green, placing 10uF Silmic elco in signal path, and thinking how much ppl are paying for, say, Duelund cap, just to put it in mediocre circuit (in most cases)
For some reason numerous discerning audiophiles like the Edcor in spite of
the lesser objective performance, and I don't think it has anything to do with
price.
Anyway, looks like you will have some options. Mark Johnson has agreed to work
on some different front ends that will mount on the sink in addition to the Edcor
circuit.
the lesser objective performance, and I don't think it has anything to do with
price.
Anyway, looks like you will have some options. Mark Johnson has agreed to work
on some different front ends that will mount on the sink in addition to the Edcor
circuit.
Great news & thank you!! 
The front end board might be neat to allow different taps off the autoformer to lower the gain for tweeter amp usage, or hungry headphones. Maybe that's best accomplished with different transformer daughterboard wiring, considering the price of switches & etc might quickly be more than $11
The front end board might be neat to allow different taps off the autoformer to lower the gain for tweeter amp usage, or hungry headphones. Maybe that's best accomplished with different transformer daughterboard wiring, considering the price of switches & etc might quickly be more than $11
Separate. Mounts on the holes at the rear end of the store heat sinks.
Usable with other follower output stages.
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