Akai AS-980

Data

General

  • Manufacturer: Akai
  • Model: AS-980
  • Type: Quadrophonic Receiver
  • Years of manufacture: 1973 - 1975
  • Made in: Japan
  • Color: silver, wooden case walnut
  • Remote control: yes, cable remote control
  • Power consumption: 480 watts max.
  • Dimensions: 650 x 155 x 365 mm
  • Weight: 20,5 Kg
  • Original price approx.: 200'000 Yen (Japan, 1973), 2'980 DM


Connections:

  • Number of inputs:
    • Phono 1: 3 mV, 50 kOhm, 130 mV max.
    • Phono 2: 3 mV, 50 kOhm
    • Microphone: 3.8 mV, 50 kOhm
    • Media Interface: 3 mV, 50 kOhm
    • AUX 1, 2: 150 mV, 100 kOhm
    • Tape Play 1, 2: 150 mV, 100 kOhm

Main In: 500 mV, 50 kOhm Coaxial FM antenna connection (75 Ohm)

    • AM antenna connection (300 Ohm)
  • Number of outputs:
    • Tape Rec 1, 2: 150 mV

Pre Out: 500 mV, 4.5 V max.

    • 4 x loudspeaker pairs: 2 x front, 2 x rear
    • 2 x headphone outputs front + rear: 6.3 mm jack each


Technical Data:

Amplifier:

  • continuous power: quadrophonic, 20 Hz - 20 kHz
    • 8 Ohm: 4 x 30 Watt

4 Ohm: 4 x 40 Watt

  • music power: quadrophonic, 20 Hz - 20 kHz

8 Ohm: 170 W

    • 4 Ohm: 220 W
  • Total harmonic distortion: < 0.05 % at rated power
  • Attenuation factor: 50 at 8 ohms, 1 kHz
  • Frequency response:
    • Phono RIAA: 20 Hz - 50 kHz (8 ohms), ± 1 dB.
    • High level: 10 - 60'000 Hz ± 3 dB
  • Signal-to-noise ratio:
    • Phono: > 75 dB
    • Line: > 90 dB
  • Tone control:
    • Bass: ± 10 dB at 100 Hz

Treble: ± 10 dB at 10 kHz

  • Loudness: + 8 dB at 100 Hz, + 5 dB at 10 kHz
  • Low Filter (Subsonic): - 5 dB at 50 Hz (6 dB / octave)
  • High Filter: - 6 dB at 10 kHz (6 dB / octave)

Muting: - 20 dB


CD-4 Demodulator section:

  • Input sensitivity: 2.5 mV
  • Input impedance: 100 kOhm
  • Distortion factor: 0,07
  • Signal-to-noise ratio: > 70 dB
  • Channel separation at 1 kHz:
    • Left to Right: 50 dB

front to rear: 30 dB

  • Frequency range: 20 - 15'000 Hz


Tuner:

  • Reception: FM, AM
  • Frequencies:
    • FM: 87.5 - 108 MHz
    • MW: 525 - 1605 kHz
  • Input sensitivity:
    • FM: 2.0 µV
    • MW: 10 µV
  • Frequency response: 20 - 15'000 Hz
  • Distortion factor FM: Stereo < 0.5 %, < Mono 0.3 %
  • Signal-to-noise ratio:
    • FM: 70 dB
    • AM: 50 dB
  • Stereo channel separation: > 40 dB at 1 kHz
  • Selectivity:
    • FM: 70 dB
    • AM: 35 dB
  • Co-wave selection: 2.0 dB
  • Spurious wave selection: > 70 dB
  • Image frequency attenuation:
    • FM: > 85 dB

MW: > 80 dB IF attenuation:

    • FM: > 100 dB
    • MW: > 75 dB
  • AM suppression: 50 dB


Special Features

  • 4 VU meters
  • Microphone input front, mixable
  • MPX Noise Filter
  • FM Muting
  • Bass / Tweeter control V + H separately


Remarks



Pictures

  • Extract from brochure: Akai AS-980

Akai AS-980-Prospekt-1.jpg


  • Excerpt from advertisement: Akai GX-280 D-SS with Akai AS-980

Akai AS-980-280D-SS-1.jpg


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