MFA Luminescence--need schematic

[trombone]

I am looking for a schematic for the MFA Luminescence, specifically, an earlier design than the one that is best known. I sorry, but I forget the model designation codes. I don't need the audio circuit schematic--just the one that depicts how the transformers are connected.

The best known Luminescence (as far as I know) is the one with dual power supply regulators. Mine has only one regulator, and two odd size filament transformers.

My particular question that I'm researching is the wiring of these filament transformers. Both (and the B+ supply transformer) seem to have dual primaries, and all have a brown wire that is connected to the other brown wires, separate from neutral. This separate lug seems to be 1.4 ohms off neutral.

Thanks. If you can explain this or have such a diagram, I'll contact you off list.

 

[KBK]

I have some email communiaton from a guy who has three of them. he was selling one on ebay or audiogon, I forget. Anyway, we had a few discussions about the designs, etc. I believe he has schematics. If I remember! always the trick!.. I'll dig up these fairly recent emails at workand maybe put the gentleman in contact with you.

That is, if you have no luck or joy, here on the forum.

 

[trombone]

Thanks very much.

 

[ljxzyyxh]

MFA Luminescence psu

 

[Robert Twotone]

Contact Scott Franklin or Bruce Moore, the designers and former owners of MFA. Do a little Google searching should turn up info on both or at least one of them.

Scott Frankland Associates - Audio Design Consultant in San Jose

 

[directdriver]

 

[Vernonia1]

There are multiple version of the MFA Luminescence. Be sure that you know which it is that you have and use the proper revision of schematic.