Hi. I have a basic historical question about condenser microphone capsule heads and amplifiers with "bayonet" mounting arrangements: Which of the well-known types were compatible with each other?
I know that Neumann (Berlin) made M 7, M 8 and M 9 capsule heads for their CMV 3a "bottle" amplifiers. Later, when the Gefell workshop was established, were its bayonet-type capsule heads (also called M 7 and M 8) and amplifiers (such as the CMV 5, or the CMV 563 with "G/B" adapter) directly compatible with those of Neumann (Berlin), as I would expect?
Was there perhaps even broader compatibility--did other known manufacturers produce capsule heads that could be used with the Neumann bayonet-mount amplifiers, and/or amplifiers that could be used with Neumann's bayonet-mount capsule heads?
--best regards
P.S.: Schoeps used bayonet-type attachments for a few of its capsule and amplifier types, but only relatively briefly (1951-52 or thereabouts). I could be wrong but I wouldn't expect these to have been physically or electrically compatible with Neumann's products.