Country of Manufacture:Germany
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): 40 - 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 18 was a half-track mono recorder with AVC (Automatic Volume Control) on recording. Apart from the AVC, the recorder was almost identical the TK 14 with a single speed ( 3¾
ips), a single two-pole motor, two heads
and a 5¾ inch maximum spool capacity.
The recorder was fully push-button operated, with two banks of three
piano-style keys and two rim control knobs.
Audio power output was 2.5 watts and the elliptical internal speaker
measured 5¾ x 4¾ inches. Frequency response was slightly higher than the TK 14. being 40 – 12kHz 3dB.
Valve complement: EF86, EF83, ECL86, ECC81 plus 2 metal rectifiers / Audio output power: 2.5 watts / 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: 14¾ x 11½ x 6½” (375 x 292 x 165 mm) / Weight: 20 lbs (9.1 kg) / half-track mono