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
- All models in the same series:
- [[Introduction to Kenwood 4-Channel Playback Technology
Pictures
- Extract from brochure: Akai AS-980
- Excerpt from advertisement: Akai GX-280 D-SS with Akai AS-980
