At your risk. Potentially lethal voltage present.
This is continuing from previous posts on the Pleiades EF183 power amplifier using an input transformer making unnecessary the use of a voltage step up driver electronic valve (electron tube).
It sounds fantastic and loud.
Resent time is devoted in building it into a small box just fitting the following.
A small power transformer placed as half shrouded.
The very important fuse holder.
An octal base connected 1:12 input transformer.
An 1MΩ potentiometer. It may be possible to connect the wiper directly to the control grid of the triode connected EF183.
A cathode resistor of say 130Ω in parallel with 100μF.
The air gapped output transformer.
A few more bits and pieces.
The very interesting and unusual thing about this amplifier is the use of only one active device from input to output. The EF183 electron tube.
So it is only the euphonic distortion products of just one electron tube. The the distortion products of one electron tube feeding another electron tube creating new distortion products for each distortion product of the 1st electron tube.
So hopefully it may take the smoothness of the electron tube to its limit.
No comments:
Post a Comment