Technics SU-7700

Data[edit]

General

  • Manufacturer: Technics
  • Model: SU-7700
  • Type: Integrated amplifier
  • Years of manufacture: 1977 - 1979
  • Made in: Osaka, Japan
  • Colour: Silver, wooden cabinet black, as SU-7700K in Technics Brown
  • Remote control:
  • Power consumption: 450 W
  • Dimensions: 410 x 139 x 334 mm (WxHxD)
  • Weight: 9,7 kg
  • Original price approx.: 900 DM


Connections

  • Number of inputs:
    • Phono (MM): 2.5 mV, 47 kOhm

Radio: 150 mV, 47 kOhm

    • Aux: 150 mV, 47 kOhm
    • 2x tape: 150 mV, 47 kOhm
  • Number of outputs:
    • 2x tape
    • Headphones (6.3mm jack)
    • 2 speaker pairs (4 - 16 Ohm)


Technical Data

  • Continuous power (at distortion factor)
    • 8 Ohm: 2x 53 W (1 kHz), 2x 50 W (20-20,000 Hz)
    • 4 Ohm: 2x 70 W (1 kHz), 2x 60 W (20-20,000 Hz)
  • Dynamic power
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion: 0.08% (nominal power, 20-20,000 Hz)
  • Attenuation factor: 80 (8 ohms)
  • Frequency response:
    • 5 - 80,000 Hz (+0/-3 dB).
    • 20 - 20,000 Hz (±0.5 dB)
  • Signal-to-noise ratio:
    • Full scale: 58 dB (low level), 83 dB (high level).
    • 2x 50 mW: 53 dB (high level)
  • Stereo channel separation:
  • Tone control:
    • Bass: ±12 dB (50 Hz).

Treble: ±12 dB (20 kHz)

  • Loudness: yes
  • High Filter: 8 kHz (-6 dB/oct)
  • Low Filter (Subsonic): 30 Hz (-12 dB/oct)
  • Mute:


Special Features

  • Electronic overload protection circuit
  • 2 VU meters


Remarks[edit]


Pictures[edit]

  • Pictures: Technics SU-7700

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  • Excerpt from brochure: Technics SU-7700 K

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Reports[edit]

Links[edit]