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 in GIF format
• M221B in Acrobat (PDF) format
• N20B power supply parts list
• N20B power supply schematic

Created 22 Jan 2000; updated 2 Jan 2006.