Hi!
I have some old Reissmann tube mics to play with. Bit of a mixed bunch. Tow are bottle mics and two are sort of fat stubby things. All the mics are currently transformerless Hi-Z outputs. I understand that they have come from a radio station, via a museum.
One of the bottle mics has an EF12 tube, the other an EF86 (But in an EF12 socket via an adapter. The small mics have EF86 and EF806. They each have different circuits which I am still tracing out. The capsules look OK.
The power supplies are part of bigger tube mixer - amplifiers - big heavy 150W things with 6ohm, 20 ohm and 400 ohm outputs. They have horrible DIN sockets. The heaters are AC, I think.
I'm trying to decide what to do - whether to keep them as original as possible, or to build completely new power supplies (similar to the G7), or to adapt the current amp supplies. Or make brand new circuits around the EF12 and go for transformer matched balanced outputs. Or something else completely.
What would you do? I'd love to hear your ideas before I start hacking.
Cheers!
Stewart
I have some old Reissmann tube mics to play with. Bit of a mixed bunch. Tow are bottle mics and two are sort of fat stubby things. All the mics are currently transformerless Hi-Z outputs. I understand that they have come from a radio station, via a museum.
One of the bottle mics has an EF12 tube, the other an EF86 (But in an EF12 socket via an adapter. The small mics have EF86 and EF806. They each have different circuits which I am still tracing out. The capsules look OK.
The power supplies are part of bigger tube mixer - amplifiers - big heavy 150W things with 6ohm, 20 ohm and 400 ohm outputs. They have horrible DIN sockets. The heaters are AC, I think.
I'm trying to decide what to do - whether to keep them as original as possible, or to build completely new power supplies (similar to the G7), or to adapt the current amp supplies. Or make brand new circuits around the EF12 and go for transformer matched balanced outputs. Or something else completely.
What would you do? I'd love to hear your ideas before I start hacking.
Cheers!
Stewart