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Sound Rating: 5 / 10 # Owners: 1
Relaibility Rating: 5 / 10 Views: 375

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Technical Details

Brand: Grundig

Model:TK 20 / TK24




Country of Manufacture:Germany

Release dates:1964-1964

Tracks:1/2 Rec/PB

Speeds: 3 3/4

Max Reel Size("): 7"

Number of heads: 2

Head Composition: Permalloy

Head Configuration: Mono - Dual Track

# Motors:

Auto Reverse?:No

Voltage(s): 220-240v

Frequency Response:

Wow and Flutter:

Signal-to-Noise Ratio:

Sound quality rating:5 / 10

Long-term reliability rating: 5 / 10

Additional Details


The TK20 is a half-track mono recorder with a single motor, 2 heads and a maximum reel size of 5¾”. Physically, it’s identical to its quarter- track brother, the TK 24.

Transport functionality is controlled by the left hand rotary knob (clock-wise selecting rewind, stop, play, record and fast forward).

There’s a built-in safety record lock by which recording will only be permitted when one of the three input selector buttons on the right hand side of the machine are pressed simultaneously with the record mode being selected.The knob on the left controls volume, tone, speaker on/off switch and mains power.  A three digit tape counter, magic eye level control and track selector (on the TK24) complete the physical layout of the machine’s various controls and indicators.

Additional Info

Specifications at a glance

TK 20 & TK24
Price when new (in the UK)
£65 2s (TK 24); £54 12s (TK 20)
Track system
quarter-track mono (TK 24); half-track mono (TK 20)
single motor (outer rotating cage split phase induction)
Maximum reel size
Tape speeds
3¾ ips
Frequency response (+ 3, -5 dB)
60Hz - 12kHz
Wow & flutter
0.2 %
Signal to noise ratio
better than 40 db
Bias frequency
Tube  complement
EF86, ECC81 (12AT7), 2 x EL95, EM84 and 2 metal rectifiers
Audio output power
2½ watts
microphone (2mV/500Kohm) diode (8.5mv/44Kohm) radio (80mv/1Mohm)
external speaker 3-7 ohms external amplifier (high impedance output, 700 mV/10 Kohm
1 x high flux permanent magnet moving coil 3¾ x 5½"
14 x 12½ x 7" (355.6 x 317.5 x 178 mm)
20 lbs


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