Telefunken M-28 (c. 1968–1971)
Little is documented about the Telefunken M-28 in surviving archival material. What the record shows comes almost entirely from the British trade press between 1968 and 1971, and the model name covers a small family of professional studio recorders rather than a single fixed configuration — the pages below refer to an M.28 series, an M28C, and an M28A.
Studio Sound (January 1968, p.39) introduced the M.28 series as a studio recorder built around silicon-planar transistors and a three-motor, solenoid-controlled deck. A later review in the same magazine (March 1970, p.37) printed the maker's specification for the M28C: a professional 6.25 mm two-channel recorder with balanced, fixed-level line inputs and outputs. At 38 cm/s the quoted tape speed deviation was 0.7%, with wow and flutter of ±0.08% (DIN 45 515 weighted). Telefunken's own advertising in Studio Sound (November 1970, p.5) listed the Magnetophon M28A at £600, mentioned an interchangeable head assembly, and offered broadcast-studio versions — with a tagline claiming this was the best recorder they made.
Beyond those period mentions, the archive record is thin. If you have an M-28 manual, brochure, or service sheet, this page would be a better place with your help.
Known specifications (from period sources)
- Type: professional reel-to-reel studio recorder, 6.25 mm tape, two-channel (M28C)
- Electronics: silicon-planar transistors (M.28 series)
- Deck: three-motor, solenoid-controlled (M.28 series)
- Inputs/outputs: balanced, fixed-level line (M28C)
- Tape speed deviation: 0.7% at 38 cm/s (M28C)
- Wow and flutter: ±0.08%, DIN 45 515 weighted, at 38 cm/s (M28C)
- List price (M28A, UK): £600 per 1970 advertising
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