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− | __NOTOC__
| + | [[Datei:QX747A.jpg]] |
− | == Data ==
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− | {{navigation}}
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− | '''General'''
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− | * Manufacturer: [[Pioneer]]
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− | * Model: QX-747 A
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− | Type: Quadraphonic Receiver
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− | * Years of manufacture: 1976 - 1977
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− | * Made in: Japan
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− | * Color: silver, wooden case walnut
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− | * Power consumption: 340 watts
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− | * Dimensions: 550 x 160 x 420 mm (WxHxD)
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− | * Weight: 19.1 kg
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− | * Original price approx.: 2'400 DM
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− | '''Connections:'''
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− | * Number of inputs:
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− | ** Phono: 2.2 mV, 50 kOhm.
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− | ** Phono ground connection: yes
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− | ** AUX: 140 mV, 100 kOhm
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− | Tape: 140 mV, 100 kOhm
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− | ** Coaxial FM- antenna connection (75 Ohm)
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− | ** AM antenna connection (300 Ohm)
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− | * Number of outputs:
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− | ** 3 x loudspeaker pairs: 2 x front, 1 x rear
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− | ** 2 x headphone output front + rear: 6.3 mm jack each
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− | '''Technical data:'''
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− | | |
− | '''Amplifier:'''
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− | * continuous power: quadrophonic, 20-20 kHz
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− | ** 8 Ohm: 4 x 20 Watt
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− | 4 Ohm: 4 x 25 Watt
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− | * music power: quadrophonic, 20-20 kHz
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− | ** 8 Ohm: 4 x 30 Watt
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− | ** 4 Ohm: 4 x 35 Watt
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− | * Continuous power: Stereo, 20- 20 kHz
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− | ** 8 Ohm: 2 x 40 Watt
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− | ** 4 Ohm: 2 x 50 Watt
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− | * Continuous power: Stereo, 1 kHz
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− | ** 8 Ohm: 45 Watt
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− | ** 4 Ohm: 55 Watt
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− | * Total harmonic distortion: 0.5 % at 20- 20'000 Hz, 0.005 % at 1 Watt, 8 Ohm
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− | * Attenuation factor: 35 at 8 ohms, 1 kHz
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− | * Frequency response:
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− | ** AUX, Tape: 10 - 25'000 Hz + 0,5 dB, - 1 dB
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− | ** Phono: 30 - 15'000 Hz ± 1 dB
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− | * Power bandwidth: 7 - 40'000 Hz
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− | * Signal-to-noise ratio:
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− | ** Phono: 70 dB
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− | Line: 90 dB
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− | * Tone control: yes
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− | ** Bass: ± 10 dB, 100 Hz
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− | treble: ± 10 dB, 10 kHz
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− | * Loudness: yes
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− | * High Filter: no
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− | * Low Filter (Subsonic): no
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− | '''CD-4 demodulator part:'''
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− | * Input sensitivity: 2.5 mV
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− | * Input impedance: 100 kOhm
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− | * Distortion factor: 0,07
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− | * Signal-to-noise ratio: > 70 dB
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− | * Channel separation at 1 kHz:
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− | ** Left to Right: 50 dB
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− | front to rear: 30 dB
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− | * Frequency range: 20 - 15'000 Hz
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− | '''Tuner:'''
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− | * Reception: FM, AM
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− | * Frequencies:
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− | ** FM: 88 - 108 MHz
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− | ** MW: 535 - 1600 kHz
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− | * Input sensitivity:
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− | ** FM: 1.9 µV
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− | ** MW: 15 µV
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− | * Frequency response: 20 - 15'000 Hz
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− | * Distortion factor FM: stereo 0.4 %, mono 0.2 %
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− | * Signal-to-noise ratio:
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− | ** FM: 70 dB
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− | AM: 50 dB
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− | * Stereo channel separation: > 40 dB at 1 kHz
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− | * Selectivity:
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− | ** FM: 60 dB
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− | ** AM: > 25 dB
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− | * Co-wave selection: 1.0 dB
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− | * Spurious wave selection: 65 dB
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− | * Image frequency attenuation:
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− | ** FM: > 80 dB
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− | MW: > 45 dB
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− | IF attenuation:
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− | ** FM: > 90 dB
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− | ** MW: > 55 dB
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− | * AM suppression: 65 dB
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− | '''Special Features'''
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− | * Equipped with all quadraphonic systems:
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− | ** CD-4
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− | SQ Full Logic
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− | ** Regular Matrix
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− | * Quadro level meter
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− | * Connector for Dolby adapter
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− | * MPX 4-Channel Output Jack
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− | * MPX Noise Filter
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− | * FM Muting
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− | * Bass / Tweeter control V + H separate
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− | * Display level switchable: 0 dB, - 10 dB, - 20 dB
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− | | |
− | | |
− | == Remarks ==
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− | * All Pioneer Quadro receivers at a glance:
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− | ** [[Pioneer QX-646]]
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− | ** [[Pioneer QX-747]]
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− | ** [[Pioneer QX-747 A]]
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− | ** [[Pioneer QX-949]]
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− | ** [[Pioneer QX-949 A]]
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− | ** [[Pioneer QX-4000]]
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− | ** [[Pioneer QX-8000]]
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− | ** [[Pioneer QX-8000 A]]
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− | ** [[Pioneer QX-9900]]
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− | * [[Introduction Kenwood 4-channel playback technology]]
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− | | |
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− | == Pictures ==
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− | * Image: Pioneer QX-747 A
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− | [[File:QX747A.jpg]]
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− | == Reviews ==
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− | * Review of the Pioneer QX-747 by "Hifi Studio": [[https://web.archive.org/web/20120513213611/http://www.hifi-studio.de/hifi-klassiker/pioneer/Pioneer_QX/Pioneer_QX747/Pioneer_QX747.htm]]
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− | == Links ==
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− | * External link Pioneer catalog on "Hifi Archive": [[http://www.hifi-archiv.info/Pioneer/1976/pioneer14.jpg]]
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− | [[Category:Receiver]]
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