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Sound Rating: 8 / 10 # Owners: 1
Relaibility Rating: 8 / 10 Views: 8

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Technical Details

Brand: Telefunken

Model:M 28C

Category:Super High Fidelity


Electronics:Solid State


Country of Manufacture:Germany

Release dates:1968 - 1973

Tracks:1/2 Rec/PB

Speeds: 15, 30

Max Reel Size("): 10.5"

Number of heads: 3

Head Composition: Ferrite, Glass

Head Configuration: Stereo - Stacked

# Motors: 3

Voltage(s): 110-120v, 220-240v, Multi

Outputs: XLR Balanced

Frequency Response:40Hz to 20kHz

Wow and Flutter:.08% at 15 ips

Signal-to-Noise Ratio:68 dB at 15 ips

Sound quality rating:8 / 10

Long-term reliability rating: 8/ 10

Additional Details


The Telefunken M 28C was a half track broadcast version 0f the M 28 with 38 cm/s and 19 cm/s, balanced inputs and outputs.

No mixing console, microphone amplifiers , VU meters, track switching or A-B switching.

The service manual available in German is approx. 100 pages And may be available through the following  links

Partial Manual

Service considerations

All electrolytic capacitors should be replaced.

Plug-in connectors connectors should be repaired (re-solder from the PCB, open it and put some lube on the movable areas).

Clean all the relay contacts as no replacement relays are available.

A source that may be worth checking for various things

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