Akai AS-970

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Data[edit]

General

  • Manufacturer: Akai
  • Model: AS-970
  • 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 W max.
  • Dimensions: 587 x 168 x 397 mm (WxHxD)
  • Weight: 17.4 kg
  • Original price approx.: 2'400 DM


Connections:

  • Number of inputs:
    • Phono 1: 3 mV, 50 kOhm, max. 130 mV
    • Phono 2: 3 mV, 50 kOhm
    • Microphone: 3.8 mV, 50 kOhm
    • AUX 1, 2: 180 mV, 100 kOhm
    • Tape Play 1, 2, 3: 180 mV, 100 kOhm

Tape Play DIN: 170 mV Main In: 500 mV, 50 kOhm Coaxial FM antenna connection (75 Ohm)

    • AM- Antenna connection (300 Ohm)
  • Number of outputs:
    • Tape Rec 1, 2, 3: 170 mV

Tape Rec DIN: 32 mV

    • Pre Out: 500 mV, 4,5 V max.
    • 4 x speaker pairs: 2 x front, 2 x rear
    • 2 x headphone outputs front + rear: 6.3 mm jack each


Technical Data:

Amplifier:

  • Continuous power: Quadrophonic
    • 8 Ohm: 4 x 25 Watt
    • 4 Ohm:
  • Continuous power: Stereo
    • 8 Ohm: 2 x 50 Watt
    • 4 Ohm:
  • Music power: Quadrophonic
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion: < 0,5 % bei Nennleistung
  • Dämpfungsfaktor: 50 bei 8 Ohm, 1 kHz
  • Frequenzgang:
    • Phono RIAA: 20 Hz - 20 kHz (8 Ohm), ± 1 dB
    • Hochpegel: 20 Hz - 50 kHz ± 3 dB
  • Signalrauschabstand:
    • 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 %
  • Signalrauschabstand:
    • UKW: 70 dB
    • AM: 50 dB
  • Stereo-Kanaltrennung: >40 dB at 1 kHz
  • Selectivity:
    • FM: 70 dB

MW: 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

  • 2 VU meters
  • 4-channel systems: CD-4, Discrete, SQ, RM
  • Microphone input front, mixable
  • MPX Noise Filter
  • FM Muting
  • Bass / Tweeter control V + H separately


Remarks[edit]



Pictures[edit]

  • Extract from brochure: Akai AS-970

Akai AS-970-Prospekt-2.jpg


Reports[edit]

Links[edit]

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