One Tube Microphone from Berlin and One from Barstow: A Do-It-Yourself Tube Mic & De-mystifying the Neumann U-47
by David Royer
" ... capsule in pre- selected phase and signal level combinations, it is possible to get a selection of several patterns. The Neumann M-7 condenser microphone capsule (used in pre-1958 U-47s and M-49s) was a fine microphone capsule, which, when paired with the ... "