Difference between revisions of "Akai AS-980"

 
 
(13 intermediate revisions by 2 users not shown)
Line 1: Line 1:
−
Form
+
__NOTOC__
−
FM/AM synthesis stereo amplifier
+
== Data ==
−
<FM tuner part>
+
{{navigation}}
−
Received frequency / IF frequency
+
'''General'''
−
76MHz - 90MHz/10.7MHz
+
* Manufacturer: [[Akai]]
−
Sensitivity (IHF)  
+
* Model: AS-980
−
2.0 microvolts
+
* Type: Quadrophonic Receiver
−
THD
+
* Years of manufacture: 1973 - 1975
−
mono: 0.3% or less
+
* Made in: Japan
−
stereo: 0.5% or less
+
* Color: silver, wooden case walnut
−
S/N ratio
+
* Remote control: yes, cable remote control
−
70dB or more
+
* Power consumption: 480 watts max.
−
The degree of selection
+
* Dimensions: 650 x 155 x 365 mm
−
70dB or more
+
* Weight: 20,5 Kg
−
Image ratio
+
* Original price approx.: 200'000 Yen (Japan, 1973), 2'980 DM
−
85dB or more (84MHz)  
+
 
−
IF disturbance ratio
+
 
−
100dB or more (84MHz)
+
'''Connections:'''
−
Spurious
+
* Number of inputs:
−
34dB or less
+
** Phono 1: 3 mV, 50 kOhm, 130 mV max.
−
Antenna input impedance
+
** Phono 2: 3 mV, 50 kOhm
−
A 300-ohm balance type, a 75-ohm balance type
+
** Microphone: 3.8 mV, 50 kOhm
−
Stereo separation
+
** Media Interface: 3 mV, 50 kOhm
−
40dB or more
+
** AUX 1, 2: 150 mV, 100 kOhm
−
Capture ratio (IHF)
+
** Tape Play 1, 2: 150 mV, 100 kOhm
−
2.0dB
+
Main In: 500 mV, 50 kOhm
−
<AM tuner part>
+
Coaxial FM antenna connection (75 Ohm)
−
Received frequency
+
** AM antenna connection (300 Ohm)
−
535kHz - 1605kHz
+
* Number of outputs:
−
Sensitivity (IHF) Dummy
+
** Tape Rec 1, 2: 150 mV
−
10dB/one MHz (400Hz, 30%Mod)
+
Pre Out: 500 mV, 4.5 V max.
−
Image ratio  
+
** 4 x loudspeaker pairs: 2 x front, 2 x rear
−
80dB or more (1MHz)  
+
** 2 x headphone outputs front + rear: 6.3 mm jack each
−
IF disturbance ratio
+
 
−
75dB or more (1MHz)  
+
 
−
The degree of selection
+
'''Technical Data:'''
−
35dB or more
+
 
−
AM distortion
+
'''Amplifier:'''
−
1.0% or less
+
* continuous power: quadrophonic, 20 Hz - 20 kHz
−
S/N ratio  
+
** 8 Ohm: 4 x 30 Watt
−
50dB or more (400Hz, 30%Mod)
+
4 Ohm: 4 x 40 Watt
−
<Amplifier part>
+
* music power: quadrophonic, 20 Hz - 20 kHz
−
Output
+
8 Ohm: 170 W
−
Music power :  
+
** 4 Ohm: 220 W
−
220W (4ohms)
+
* Total harmonic distortion: &lt; 0.05 % at rated power
−
170W (8ohms)
+
* Attenuation factor: 50 at 8 ohms, 1 kHz
−
Continuous cruising power :  
+
* Frequency response:
−
40W+40W (4ohms)
+
** Phono RIAA: 20 Hz - 50 kHz (8 ohms), ± 1 dB.
−
30W+30W (8ohms)
+
** High level: 10 - 60'000 Hz ± 3 dB
−
THD
+
* Signal-to-noise ratio:
−
0.05% or less (8ohms)
+
** Phono: &gt; 75 dB
−
Output bandwidth (IHF)
+
** Line: &gt; 90 dB
−
20Hz - 50kHz (8ohms)
+
* Tone control:
−
Frequency response
+
** Bass: ± 10 dB at 100 Hz
−
10Hz - -60kHz three dB  
+
Treble: ± 10 dB at 10 kHz
−
Input sensitivity/impedance
+
* Loudness: + 8 dB at 100 Hz, + 5 dB at 10 kHz
−
Phono: 3mV/50kohm
+
* Low Filter (Subsonic): - 5 dB at 50 Hz (6 dB / octave)
−
AUX, Tape Monitor(Din/Pin):150mV/100kohm
+
* High Filter: - 6 dB at 10 kHz (6 dB / octave)
−
Media-Interface-Connector: 3mV/50kohm
+
Muting: - 20 dB
−
An input-proof [ Phono ]  
+
 
−
130mV(1kHz)1%
+
 
−
Equalizer
+
'''CD-4 Demodulator section:'''
−
RIAA±1dB
+
* Input sensitivity: 2.5 mV
−
Tone control
+
* Input impedance: 100 kOhm
−
Bass: 100Hz±10dB
+
* Distortion factor: 0,07
−
Treble: 10kHz±10dB
+
* Signal-to-noise ratio: &gt; 70 dB
−
Loudness control
+
* Channel separation at 1 kHz:
−
(Volume -30dB)
+
** Left to Right: 50 dB
−
100Hz:+8dB
+
front to rear: 30 dB
−
10kHz:+5dB
+
* Frequency range: 20 - 15'000 Hz
−
Filter
+
 
−
High cut filter: -6dB, 10kHz
+
 
−
Low cut filter: -5dB, 50Hz
+
'''Tuner:'''
−
Dimensions
+
* Reception: FM, AM
−
Width 650x height 155x depth of 365mm
+
* Frequencies:
−
Weight
+
** FM: 87.5 - 108 MHz
−
20.5kg
+
** MW: 525 - 1605 kHz
 +
* Input sensitivity:  
 +
** FM: 2.0 µV
 +
** MW: 10 µV
 +
* Frequency response: 20 - 15'000 Hz
 +
* Distortion factor FM: Stereo &lt; 0.5 %, &lt; Mono 0.3 %
 +
* Signal-to-noise ratio:
 +
** FM: 70 dB
 +
** AM: 50 dB
 +
* Stereo channel separation: &gt; 40 dB at 1 kHz
 +
* Selectivity:
 +
** FM: 70 dB
 +
** AM: 35 dB
 +
* Co-wave selection: 2.0 dB
 +
* Spurious wave selection: &gt; 70 dB
 +
* Image frequency attenuation:
 +
** FM: &gt; 85 dB
 +
MW: &gt; 80 dB
 +
IF attenuation:
 +
** FM: &gt; 100 dB
 +
** MW: &gt; 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:
 +
** [[Akai AA-910]]
 +
** [[Akai AA-910 DB]]
 +
** [[Akai AA-920]]
 +
** [[Akai AA-930]]
 +
** [[Akai AA-940]]
 +
** [[Akai AS-960]]
 +
** [[Akai AS-970]]
 +
** [[Akai AS-980]]
 +
 
 +
 
 +
* [[Introduction to Kenwood 4-Channel Playback Technology
 +
** [[Introduction Kenwood 4-channel playback technology|Introduction Kenwood 4-channel playback technology]]
 +
 
 +
 
 +
== Pictures ==
 +
* Extract from brochure: Akai AS-980
 +
[[File:Akai AS-980-Prospekt-1.jpg]]
 +
 
 +
 
 +
* Excerpt from advertisement: Akai GX-280 D-SS with Akai AS-980
 +
[[File:Akai AS-980-280D-SS-1.jpg]]
 +
 
 +
 
 +
== Reviews ==
 +
 
 +
 
 +
 
 +
== Links ==
 +
 
 +
 
 +
[[Category:Receiver]]

Latest revision as of 00:32, 6 November 2020

Data[edit]

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[edit]



Pictures[edit]

  • 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


Reviews[edit]

Links[edit]

Retrieved from "https://hifi-wiki.com/index.php?title=Akai_AS-980&oldid=255531"