Technical Details
Brand: Grundig
Model:TK 28
Category:Mid High Fidelity
Application:Consumer
Electronics:Tube
Country of Manufacture:Germany
Release dates:1960 - 1963
Speeds: 1 7/8, 3 3/4
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Voltage(s): 220-240v
Frequency Response:(+ 3, -5 dB): 60Hz - 15kHz at 3¾ ips. 60Hz - 8kHz at 1 ips
Wow and Flutter:less than 0.25 % at 3¾ ips. less than 0.4% at 1 ips
Signal-to-Noise Ratio:better than 45 db
Sound quality rating:5 / 10
Long-term reliability rating: 5/ 10
Additional Details
Description
The TK 28 was from the same family as the TK20 and TK24.
Features included easy front-panel switching of speeds, 3-digit resettable tape position indicator, Trick recording (sound-on-sound), mixing of inputs, dual-track playback, push-pull 2.5-watt EL95 output, 5.9″ ( 15 cm) reel capacity and EM 84 magic ribbon record modulation indicator.
Not produced for the US or UK export market, price when new in Germany was 561 DM.
Additional Info
Bias frequency: 75kHz / Valve complement: EF86 x 2. ECC81 x 2. EM84. EL95 x 2 selenium rectifier / Audio output power: 2½ watts / Inputs: microphone (2mV / 500KΩ) diode (8.5mv / 44KΩ) radio (80mv / 1MΩ / Outputs: external speaker 3-7Ω external amplifier (high impedance output, 700 mV / 10 KΩ / Speaker(s): 1 x high flux permanent magnet moving coil 3¾ x 5½” / Dimensions: 14 x 13.2 x 7.3 inches (355 x 335 x 185 mm) / Weight: 25.3 lbs (11.36 kg) / quarter-track stereo