I just got 3 U47's in my shop that a client found recently. They are all original VF14M units, but no power supplies. Serial numbers are : U47a #5207 Neumann Badge U47a #5209 Neumann Badge U47 #2688 Telefunken Badge I assume that the Telefunken badge on #2688 was done by Gotham Audio. Stephen Temmer did that a lot in the 1960's to increase resale value, even though Telefunken never actually made any of their own microphones !
Would all 3 be the standard 105 VDC, 40 mA power supply ? I'm looking for a schematic for the NG Power supply so I can build new power supplies for these mic's. Fortunately I have the 3 pieces of the original 6 pin Tuchel female connectors for the mic cables, I'll probably use a 5 pin XLR type connector for the power supply end of the mic cables.
Thanks for all your help in the past,
Charlie Brewer Tech Services Nashville, TN firstname.lastname@example.org