Grundig TK 247

Data

Grundig Stereo Tape Recorder TK 247

General

• Manufacturer: Grundig-Radiowerke mbH, Fürth
• Model: TK 247 de Luxe
• Type: Suitcase reel-to-reel tape recorder for horizontal operation with built-in stereo loudspeakers
• Years of manufacture: 1967-1969
• Manufactured in: Fuerth
• Color: metallic grey
• Remote control: no
• Power supply: 110V-240V, 50Hz (60 Hz with conversion kit)
• Power consumption: 50 W
• Dimensions (W x H x D): 450 x 200 x 340 mm
• Weight: 13,5 kg
• Original price approx.: Org. invoice JAN 1968 for 598,- DM

Connections

• Number of outputs: 3
  • amplifier 2x 800 mV/22kΩ
  • Headphone/amplifier monitoring control DIN
  • Loudspeaker 2x 4Ω (supplement or replacement of the 4 built-in loudspeakers).

• Number of inputs: 3
  • Micro 2x 1...250 mV at approx. 100 kΩ.
  • Plate 2x 30 mV...7.5 V at1 MΩ
  • Radio 2x 1...250 mV at approx. 32 kΩ

Technical Data

• Max. Coil diameter: 18 cm
• Drive: 1 motor, friction wheel drive, fast forward/reverse by belt drive
• Heads: 2 heads (erasing head and combined recording/playback head)
• Tracks: 4 (quarter track)
• Tape speeds: 9.5/19 cm/s
• Rewind time: approx. 270 sec. with LS tape 18cm reel
• (synchronisation fluctuations):
• Pitch fluctuations:
  • <= +- 0.15 % at 9.5 cm/s.
  • <= +- 0.12 % at 19 cm/s
• Overall frequency response:
  • 40 - 12,500 Hz at 9.5 cm/s
  • 40 - 16,000 Hz at 19 cm/s
• Dynamic range:
  • >= 47 dB at 9.5 cm/s
  • >= 48 dB at 19 cm/s

Special Features

• Stereo power amplifier of 2x 4 W / 5,5 W with 4 speakers (2 per channel)
• Automatic STOP at the end of the tape

Remarks

The TK 247 and the TK 241 (mono) were the only fully transistorized units from the 200 series until 1969. The design is similar to the Grundig TK 245, is 4 cm wider (more speakers) and the level controls are newly arranged.

Special features: The automatic recording tuning out of the TK 245 was omitted.

Both stereo channels are controlled together via ONE control.

Note: the mains selector switch was supplied for 220 volts. Since 1987, however, the mains supply has been 230 volts, and the selector switch should be changed to 240 volts with a coin (photo) - to protect the unit.

Other models for comparison

Models similar to each other until 1969 for horizontal operation (tubes TK 245 + full transistor TK 247):

• Grundig TK 245
• Grundig TK 247

Models of the vertically usable successor series from 1969 in a completely new design, technically of higher quality (e.g. 3 tone heads):

• Grundig TK 244
• Grundig TK 246
• Grundig TK 248

Pictures