Category:Mid High Fidelity
Country of Manufacture:Germany
Release dates:1964 - 1967
Speeds: 3 3/4
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(+ 3, -5 dB): 60 - 12kHz
Wow and Flutter:not exceeding 0.2%
Signal-to-Noise Ratio:better than 45dB
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
The TK 23L (sometimes called TK23 ‘A’ for ‘automatic’ in some literature) was similar in appearance to the TK 23 but quite different electronically.
Like the earlier TK 23, this was a quarter-track mono single speed (3¾ ips) machine with a maximum reel capacity of 5¾ inches. The TK 23L however featured a fully automatic recording system which set the input signal to optimum level for ‘worry-free’ recording while at the same time maintaining maximum dynamic range. This automatic system could be overridden and the EM84 magic ribbon recording level tube used in conjunction with the record level control.
Valve complement: EAF86, EF83, ECL86, ECC81, EM84 plus 3 metal rectifiers / Audio output power: 4 watts across 5 ohms / Inputs: microphone: 2.2 – 45mV across 1.5 Mohm diode: 2.2 – 45mV across 22 Kohm radio / gram PU: 100mV – 2V across 1 Mohm / Outputs: high impedance: 700mV across 15k ohm earphone: 12V across 220 Kohm / Speaker(s): 5¾ x 4¾” elliptical with ceramic magnet / Dimensions: 13¼ x 10½ x 6¾” (337 x 267 x 171 mm) / Weight: 22 lbs (10 kg) / quarter-track mono