Nelson wrote a nice article for Linear Audio Vol 0 about a super-simple amp with just a single FET: The Arch Nemesis.
He agreed that I put it on line.
Have fun, and Nelson, thanks!
jan didden
He agreed that I put it on line.
Have fun, and Nelson, thanks!
jan didden
Last edited:
And, of course you
can always visit the happy helpers at the Pass
Forum at www.diyaudio.com for advice and camaraderie.
Attachments
Forgot to tell you. I received several letters commenting on articles in Linear Audio. I put them on-line, together with the author's reply, so you don't have to wait for the next volume to read those comments.
It's all here: Linear Audio | Letters .
Also, Nelson Pass article The Arch Nemesis published in Vol 0 has been put on line for free download: Linear Audio | Online Resources .
Have fun!
jan didden
It's all here: Linear Audio | Letters .
Also, Nelson Pass article The Arch Nemesis published in Vol 0 has been put on line for free download: Linear Audio | Online Resources .
Have fun!
jan didden
Nelson wrote a nice article for Linear Audio Vol 0 about a super-simple amp with just a single FET: The Arch Nemesis.
He agreed that I put it on line.
Have fun, and Nelson, thanks!
jan didden
The link to Nelson's article doesn't work. I cannot find where it might be located in the Linear Audio website.
Hi,
The wisch of J. Hiraga was to emulate the WE 25 B tube and the caned transitor was choosed for its harmonic distorsions in relation to this goal.
OT was a decent one if I remember : Tango or Tamura ?!
Unluckilly in french, here is the original paper, but there are shematics and measurements : L'amplificateur Nmsis, ou l'hommage au WE 25 B (J.Hiraga)
The wisch of J. Hiraga was to emulate the WE 25 B tube and the caned transitor was choosed for its harmonic distorsions in relation to this goal.
OT was a decent one if I remember : Tango or Tamura ?!
Unluckilly in french, here is the original paper, but there are shematics and measurements : L'amplificateur Nmsis, ou l'hommage au WE 25 B (J.Hiraga)
Hello,
The output transformer was made by a French company that in the past did make more iron for the shop in Paris. Later they did make a model with 2 power transistors which did use a toriod power transformer as an output transformer.
The choke made for the Nemesis i did use in my Hiraga le Classe A .200mH have been trying a lot of people to do the same with ll2733 or ll1694 Lundahl in their Nelson Pass and Hiraga amps but so far nobody tried that.
If i ever built a Pass amp, need one with high input impedance( because of passive line level crossover) ability to drive Altec voice of the theatre with 16 ohm speaker.. Will be filtered at 600 herz with 12 db. With 104db/1watt/1metre . 20 watts will be ok. Dont want an amp that will fry my extinct woofers when something goes wrong so still looking.
Greetings, Eduard
The output transformer was made by a French company that in the past did make more iron for the shop in Paris. Later they did make a model with 2 power transistors which did use a toriod power transformer as an output transformer.
The choke made for the Nemesis i did use in my Hiraga le Classe A .200mH have been trying a lot of people to do the same with ll2733 or ll1694 Lundahl in their Nelson Pass and Hiraga amps but so far nobody tried that.
If i ever built a Pass amp, need one with high input impedance( because of passive line level crossover) ability to drive Altec voice of the theatre with 16 ohm speaker.. Will be filtered at 600 herz with 12 db. With 104db/1watt/1metre . 20 watts will be ok. Dont want an amp that will fry my extinct woofers when something goes wrong so still looking.
Greetings, Eduard
Tango fg50s
Hello,
My friend in Vietnam who put photos here told me he bought a pair of Tango FG50S. I remember reading about the nemesis by Jean Hiraga and later they did come up with this Tango instead of the much cheaper original transformer.
Take a look at the figures.
Greetings, eduard
Hello,
My friend in Vietnam who put photos here told me he bought a pair of Tango FG50S. I remember reading about the nemesis by Jean Hiraga and later they did come up with this Tango instead of the much cheaper original transformer.
Take a look at the figures.
Greetings, eduard
Attachments
Hello,
My friend in Vietnam who put photos here told me he bought a pair of Tango FG50S. I remember reading about the nemesis by Jean Hiraga and later they did come up with this Tango instead of the much cheaper original transformer.
Take a look at the figures.
Greetings, eduard
Many thanks! I will create a new topic and post some images of my Tango when I get it at next month
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