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The large number of 12AU7 (?) and tunable laminated core inductors are for the master oscillator of each note, and the frequency dividers for each note.I found that at least half of similar inductors in a Wurl 4100B had suitable inductance (2-4H) and DCR to use as screen and preamp chokes in audio amps - they are tunable, so max inductance is with minimum gap - they may have a tapping, and some may have lower inductance especially if the winding window is only partly filled.Can you identify the organ model? You may be able to get a schematic/service manual for it to identify power rails - it doesn't look like a 428M or 532, but there were many many models - you could even post photos on The Organ Forum or look through their photos.
The large number of 12AU7 (?) and tunable laminated core inductors are for the master oscillator of each note, and the frequency dividers for each note.
I found that at least half of similar inductors in a Wurl 4100B had suitable inductance (2-4H) and DCR to use as screen and preamp chokes in audio amps - they are tunable, so max inductance is with minimum gap - they may have a tapping, and some may have lower inductance especially if the winding window is only partly filled.
Can you identify the organ model? You may be able to get a schematic/service manual for it to identify power rails - it doesn't look like a 428M or 532, but there were many many models - you could even post photos on The Organ Forum or look through their photos.
