Teac A-7400 RX specifications

Category : Tape machines

Brand : Teac

General

Connections

Tech nical data

Special equipment

  • Manufacturer: Teac
  • Model: A-7400 RX
  • Type: Stereo Master Coil Tape with DBX
  • Years of construction: 1975 - 1978
  • Made in: Japan
  • Color: Silver /Black, side panels wood
  • Remote control: yes, cable remote control RC-170
  • Power consumption: 90 W
  • Dimensions (WxHxD):
    • Drive unit: 470 x 455 x 300 mm
    • Electronics unit: 470 x 205 x 310 mm
  • Weight:
    • Drive unit: 27.5 kg
    • Electronics unit: 12.5 kg
  • Factory price approx.: 398'000 yen (Japan, 1975), 6'000 DM
  • New prices Accessories:
    • RC-170 Cable remote control: 10,500 yen, 160 DM
    Drive unit: 470 x 455 x 300 mm
  • Electronics unit: 470 x 205 x 310 mm
  • Drive unit: 27.5kg
  • Electronics unit: 12.5kg
  • Cable remote control RC-170: 10,500 yen, 160 DM
  • Inputs:
    • Microphone: 0.25mV (0.6-10 K-ohm) -
    • Line: 100 mV (50 K-Ohm )
  • Outputs:
    • DIN: 0.3V 10 K-Ohm ) -
    • Line: 0.3V (10 K-ohm)
    • Headphones: 0.05V (8 ohm)
  • Microphone: 0.25mV (0.6- 10 K-Ohm ) -
  • Line: 100 mV (50 K-Ohm )
  • DIN: 0.3V 10 K-Ohm ) -
  • Line: 0.3V (10 K-ohm)
  • Headphones: 0.05V (8 ohm)
  • 2-Channel, Stereo Tape Deck
  • Max. Coil diameter: 26.5 cm
  • Drive type: 2 eddy current winding motors and 1 hysteresis synchronous tone motor
  • Head assembly: 1 recording head, 1 playback head, 1 extinguishing head Permaflux
  • Tracks: 2 / 4
  • Tape speeds: 19 cm/s, 38 cm/s
  • Total frequency response:
    • at 19 cm/sec: 25 - 28'000 Hz
    • at 38 cm/sec: 25 - 30'000 Hz
  • Crosstalk attenuation at 1 kHz in stereo mode: 50 dB
  • Signal-to-noise ratio: 60 dB (1 kHz)
    • DBX On: 100 dB
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  • Dynamic range DBX : 110 dB (1 kHz)
  • Synchronisation fluctuations:
    • at 19 cm/sec: ± 0,05 %
    • at 38 cm/sec: ± 0,04 %
  • Max. Deviation of the average speed:
    • at 38 cm/sec: ± 1 %
  • Erasure attenuation:
    • at 38 cm/sec: 68 dB
  • Pre-magnetization and erasure frequency: 100 kHz
  • DC with rapid erasure
  • at 19 cm/sec: 25 - 28'000 Hz
  • at 38 cm/ sec: 25 - 30'000 Hz
  • DBX On: 100 dB
  • at 19 cm/sec: ± 0,05 %
  • at 38 cm/sec: ± 0,04 %
  • at 38 cm/sec: ± 1 %
  • at 38 cm/sec: 68 dB
  • Stereo 2- / 4- Track master coil tape with DBX
  • Drive unit and electronic unit separated
  • 2 VU meters, frequency linear
  • backband control
  • Drive logic
  • Remote control of all functions available as an accessory
  • Switch VU meter (High/Normal)
  • Equalization and premagnetization
  • Output adjustable left/right separated
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