Microphone Schematics
Altec
Technical letter #10 on the 436 amplifier
M20 manual, p. 1
M20 manual, p. 2
M20 manual, p. 3
M20 manual, p. 4 (response plots and schematic)
M20 spec sheet, p. 1
M20 spec sheet, p. 2
M30 manual, p. 1
M30 manual, p. 2
M30 manual, p. 3
M30 manual, p. 4 (response plots and schematic)
M30 spec sheet, p. 1
M30 spec sheet, p. 2
Capps
Capps 2001 manual in Acrobat format
Neumann
KM-83, KM-84, KM-85
KM-86
KM-88
U-87
U-87a
U-89
Schoeps
M221B
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Created 22 Jan 2000; updated 21 Feb 2001.