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| − | __NOTOC__
| + | Form |
| − | == Data ==
| + | FM/AM synthesis stereo amplifier |
| − | {{navigation}}
| + | <FM tuner part> |
| − | '''General'''
| + | Received frequency / IF frequency |
| − | * Manufacturer: [[Akai]]
| + | 76MHz - 90MHz/10.7MHz |
| − | * Model: AS-980
| + | Sensitivity (IHF) |
| − | * Type: Quadrophonic Receiver
| + | 2.0 microvolts |
| − | * Years of manufacture: 1973 - 1975
| + | THD |
| − | * Made in: Japan
| + | mono: 0.3% or less |
| − | * Color: silver, wooden case walnut
| + | stereo: 0.5% or less |
| − | * Remote control: yes, cable remote control
| + | S/N ratio |
| − | * Power consumption: 480 watts max.
| + | 70dB or more |
| − | * Dimensions: 650 x 155 x 365 mm
| + | The degree of selection |
| − | * Weight: 20,5 Kg
| + | 70dB or more |
| − | * Original price approx.: 200'000 Yen (Japan, 1973), 2'980 DM
| + | Image ratio |
| − | | + | 85dB or more (84MHz) |
| − | | + | IF disturbance ratio |
| − | '''Connections:'''
| + | 100dB or more (84MHz) |
| − | * Number of inputs:
| + | Spurious |
| − | ** Phono 1: 3 mV, 50 kOhm, 130 mV max.
| + | 34dB or less |
| − | ** Phono 2: 3 mV, 50 kOhm
| + | Antenna input impedance |
| − | ** Microphone: 3.8 mV, 50 kOhm
| + | A 300-ohm balance type, a 75-ohm balance type |
| − | ** Media Interface: 3 mV, 50 kOhm
| + | Stereo separation |
| − | ** AUX 1, 2: 150 mV, 100 kOhm
| + | 40dB or more |
| − | ** Tape Play 1, 2: 150 mV, 100 kOhm
| + | Capture ratio (IHF) |
| − | Main In: 500 mV, 50 kOhm
| + | 2.0dB |
| − | Coaxial FM antenna connection (75 Ohm)
| + | <AM tuner part> |
| − | ** AM antenna connection (300 Ohm)
| + | Received frequency |
| − | * Number of outputs:
| + | 535kHz - 1605kHz |
| − | ** Tape Rec 1, 2: 150 mV
| + | Sensitivity (IHF) Dummy |
| − | Pre Out: 500 mV, 4.5 V max.
| + | 10dB/one MHz (400Hz, 30%Mod) |
| − | ** 4 x loudspeaker pairs: 2 x front, 2 x rear
| + | Image ratio |
| − | ** 2 x headphone outputs front + rear: 6.3 mm jack each
| + | 80dB or more (1MHz) |
| − | | + | IF disturbance ratio |
| − | | + | 75dB or more (1MHz) |
| − | '''Technical Data:'''
| + | The degree of selection |
| − | | + | 35dB or more |
| − | '''Amplifier:'''
| + | AM distortion |
| − | * continuous power: quadrophonic, 20 Hz - 20 kHz
| + | 1.0% or less |
| − | ** 8 Ohm: 4 x 30 Watt
| + | S/N ratio |
| − | 4 Ohm: 4 x 40 Watt
| + | 50dB or more (400Hz, 30%Mod) |
| − | * music power: quadrophonic, 20 Hz - 20 kHz
| + | <Amplifier part> |
| − | 8 Ohm: 170 W
| + | Output |
| − | ** 4 Ohm: 220 W
| + | Music power : |
| − | * Total harmonic distortion: < 0.05 % at rated power
| + | 220W (4ohms) |
| − | * Attenuation factor: 50 at 8 ohms, 1 kHz
| + | 170W (8ohms) |
| − | * Frequency response:
| + | Continuous cruising power : |
| − | ** Phono RIAA: 20 Hz - 50 kHz (8 ohms), ± 1 dB.
| + | 40W+40W (4ohms) |
| − | ** High level: 10 - 60'000 Hz ± 3 dB
| + | 30W+30W (8ohms) |
| − | * Signal-to-noise ratio:
| + | THD |
| − | ** Phono: > 75 dB
| + | 0.05% or less (8ohms) |
| − | ** Line: > 90 dB
| + | Output bandwidth (IHF) |
| − | * Tone control:
| + | 20Hz - 50kHz (8ohms) |
| − | ** Bass: ± 10 dB at 100 Hz
| + | Frequency response |
| − | Treble: ± 10 dB at 10 kHz
| + | 10Hz - -60kHz three dB |
| − | * Loudness: + 8 dB at 100 Hz, + 5 dB at 10 kHz
| + | Input sensitivity/impedance |
| − | * Low Filter (Subsonic): - 5 dB at 50 Hz (6 dB / octave)
| + | Phono: 3mV/50kohm |
| − | * High Filter: - 6 dB at 10 kHz (6 dB / octave)
| + | AUX, Tape Monitor(Din/Pin):150mV/100kohm |
| − | Muting: - 20 dB
| + | Media-Interface-Connector: 3mV/50kohm |
| − | | + | An input-proof [ Phono ] |
| − | | + | 130mV(1kHz)1% |
| − | '''CD-4 Demodulator section:'''
| + | Equalizer |
| − | * Input sensitivity: 2.5 mV
| + | RIAA±1dB |
| − | * Input impedance: 100 kOhm
| + | Tone control |
| − | * Distortion factor: 0,07
| + | Bass: 100Hz±10dB |
| − | * Signal-to-noise ratio: > 70 dB
| + | Treble: 10kHz±10dB |
| − | * Channel separation at 1 kHz:
| + | Loudness control |
| − | ** Left to Right: 50 dB
| + | (Volume -30dB) |
| − | front to rear: 30 dB
| + | 100Hz:+8dB |
| − | * Frequency range: 20 - 15'000 Hz
| + | 10kHz:+5dB |
| − | | + | Filter |
| − | | + | High cut filter: -6dB, 10kHz |
| − | '''Tuner:'''
| + | Low cut filter: -5dB, 50Hz |
| − | * Reception: FM, AM
| + | Dimensions |
| − | * Frequencies:
| + | Width 650x height 155x depth of 365mm |
| − | ** FM: 87.5 - 108 MHz
| + | Weight |
| − | ** MW: 525 - 1605 kHz
| + | 20.5kg |
| − | * 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:
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| − | ** 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
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| − | | |
| − | | |
| − | '''Special Features'''
| |
| − | * 4 VU meters
| |
| − | * Microphone input front, mixable
| |
| − | * MPX Noise Filter
| |
| − | * FM Muting
| |
| − | * Bass / Tweeter control V + H separately
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| − | | |
| − | | |
| − | == Remarks ==
| |
| − | * All models in the same series:
| |
| − | ** [[Akai AA-910]]
| |
| − | ** [[Akai AA-910 DB]]
| |
| − | ** [[Akai AA-920]]
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| − | ** [[Akai AA-930]]
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| − | ** [[Akai AA-940]]
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| − | ** [[Akai AS-960]]
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| − | ** [[Akai AS-970]]
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| − | ** [[Akai AS-980]]
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| − | | |
| − | | |
| − | * [[Introduction to Kenwood 4-Channel Playback Technology
| |
| − | ** [[Introduction Kenwood 4-channel playback technology|Introduction Kenwood 4-channel playback technology]]
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| − | | |
| − | | |
| − | == Pictures ==
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| − | * Extract from brochure: Akai AS-980
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| − | [[File:Akai AS-980-Prospekt-1.jpg]]
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| − | | |
| − | | |
| − | * Excerpt from advertisement: Akai GX-280 D-SS with Akai AS-980
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| − | [[File:Akai AS-980-280D-SS-1.jpg]]
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| − | | |
| − | | |
| − | == Reviews ==
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| − | | |
| − | | |
| − | | |
| − | == Links ==
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| − | | |
| − | | |
| − | [[Category:Receiver]]
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