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Hello,
My pseudonym is JLM. I live in France, the country of the great
wines and champagne.
I constructed, one year, 2 monophonic Alephs 2 that always bring
me a big satisfaction. This one month, I finished the
construction of 2 monophonic Aleph X.
Today, I decided to thank Mr. Nelson Pass that accepts to put to
our disposition its expertise in forums of DiyAudio.com, Pass diyers, GRollins, Blitz, Peter Daniel,
without forgetting NAR my French friend.
Specifications of my Aleph X :
Power 200 Watts / 8 ohms, 125 watts / 4 ohms
Voltage : ±31V
Bias : 8A
Every amplifier has 2 toroidal transformers of 500 VA (1 per
rail) with a softstart circuit.
2 rectifier bridges ( 50A ) 1 per rail 2
x 33000µf CO39 / 40V then 2 coils then 4 x 33000µF CO39 / 40V
The schematic is the one of Blitz (Diyaudio/forums) slightly
modified with 24 IRFP240 MosFet.
A DC protection detects the direct current in output (± 3V) and
isolate the speakers..
The sound is superb of high ends to bass tones. Wonderfull. Only
one defect: The free heat.
Mr. Nelson Pass says in XA200 manual : " equivalent of a
small hand held hair dryer ". It is true. In stereo, a good heating but a great sound.
Thank you again to all.
jl.m@tele2.fr |