This output transformer had been bought about 20 years ago for making a single ended PCL86 class A (electrons flowing all the time). This is the first electron tube amplifier made up at Pleiades lab.
Schematic had been found on the French lovely book Radio Tubes - E. Aisberg, L. Gaudillat, R. Deschepper data book. The book had been found left at the shelves of a bookshop in the Athens city center. The bookshop was kind of inside a block of flats. What a nice day. This book has a schematic for every electron tube.
Sound is great. It is used for amplifying a WLM organ and feeding an open back fullrange speaker hanged from ceiling and rotated (at your risk). Pleiades Leslie speaker.
This is how the organ sounds. Room had been untreated at that time.
https://m.youtube.com/watch?v=Bmd4NvtCf3g#fauxfullscreen
Today inductance of primary and secondary of the Hammond 1626 output transformer was measured:
14H
11mH
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