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== Data ==
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== Daten ==
'''''JVC Stereo Integrated Amplifier AX-R742 (BK)'''''
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{{Navigation}}
{{navigation}}
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'''JVC Amplifier AX-R742 (BK)'''
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*Hersteller: JVC (Japan)
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*Dynamic SUPER-A  (Vollverstärker)
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*Maße: BxHxT,  43,5 x 14,7 x 34,8 cm
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*Gewicht: 10,4 Kg
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*Leistungsaufnahme: 230 V, 50 Hz, 300 Watt (Europa)
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'''Technische Daten:'''
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*Ausgangsleistung:
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**120 Watt pro Kanal bei 4 Ohm bei 1 kHz (DIN).
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**80 Watt pro Kanal bei 8 Ohm bei 1 kHz (DIN).
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**80 Watt pro Kanal beide Kanäle angesteuert an 8 Ohm bei
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**1,0 KHz kleiner als 0,003% Klirrfakt
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*Klirrfaktor: 0,007% (20-20KHz, an 8 Ohm bei 75 Watt)
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*Leistungsbandbreite: 5 Hz - 50 KHz (IHF 0,05% Klirrfaktor an 8 Ohm)
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*Frequenzbereich: 5 HZ - 80 KHz, +0, -3dB (8 Ohm)
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*Fernbedienung: ja (RM-SA741U)
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*Compu-Link: ja (2x 3,5 Klinke)
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'''Besonderheit:'''
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*Einschaltverzögerung ( 5,9 sek. )
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*Lautsprecherpaare werden über Relais geschaltet
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*Lautstärkeregler Motorgesteuert mit roter LED
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*DIRECT-Taste überbrückt durch dicke Dräte Funftionen wie: Balance und SEA Equalizer, 
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*Aufnahmewahlschalter (zB.: Radio hören und gleichzeitig von CD aufnehmen)
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*1x Euro-Steckdose zum Anschließen anderer Geräte (Rückwand max 100 Watt)
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*7 Kanal Grafischer SEA Equalizer (+ - 12 dB)
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*Mittenfrequenzen: 63 Hz, 160 Hz, 400 Hz, 1,0 KHz, 2,5 KHz, 6,3 KHz, 16,0 KHz
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*6 Klangfarben speicherbar, 6 sind schon vorinstalliert,
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*SEA kann den klang der Tape-Aufnahme verändern (zwischenschaltbar)
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*Eigangsanschlüsse: Phono (MM + MC), Tuner, CD, AUX, Tape1, DAT,
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*Loudness: ja, (Lautstärke -30dB, + 6 dB 100 Hz, + 4 dB 10 KHz)
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*Kopfhöreranschluss: ja, 6 mm Klinke (Stereo),
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*Überlastungsschutz: ja (Relais-Schaltung)
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*2 Boxenpaare: ja, (durch Relais schaltbar)
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*Neupreis 1992: etwa 1000 DM
  
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== Bilder ==
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[[Datei:JVC_AX_R742.jpg|Beschreibung]]
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[[Datei:RM_SA74U.jpg|Beschreibung]]
  
'''General:'''
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== Bemerkungen ==
* Manufacturer: [[JVC]] (Made in Japan)
 
Type: Dynamic SUPER-A
 
Dimensions: 43.5 x 14.7 x 34.8 cm (WxHxD)
 
* Weight: 10,4 Kg
 
* Power consumption: 230 V, 50 Hz, 300 Watt (Europe)
 
* Colour: black
 
* Years of manufacture: 1991 - 1992
 
* Original price approx.: 900,- DM
 
  
 
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== Berichte ==
'''Technical data:'''
 
* Output power:
 
** 120 watts per channel at 4 ohms at 1 kHz (DIN).
 
** 80 watts per channel into 8 ohms at 1 kHz (DIN).
 
** 80 watts per channel both channels driven at 8 ohms at 1.0 KHz less than 0.003% distortion factor,
 
* Distortion factor: 0.007 % (20 - 20,000 Hz, into 8 ohms at 75 watts)
 
* Power bandwidth: 5 - 50,000 Hz (IHF 0.05 % distortion into 8 ohms)
 
* Frequency range: 5 - 80,000 Hz, + 0, - 3 dB (8 Ohm)
 
* Remote control: yes (RM-SA741U)
 
* Compu- Link: yes (2 x 3,5 mm jack)
 
* Fade Muting: yes (only via remote control)
 
* Loudspeaker impedance:
 
** 4 - 16 ohm (speaker pairs 1 or 2).
 
8 - 16 Ohm (both speaker pairs at the same time)
 
 
 
 
 
'''Special features:'''
 
* all functions remote controlled, except balance and SPI- level,
 
* switch-on delay (6 sec. by relay),
 
* speaker pairs are switched by relay,
 
* motorized volume control with red LED,
 
DIRECT button bypasses functions such as: Balance and SEA Equalizer, 
 
Recording selector switch (eg: listen to the radio and record from CD at the same time).
 
* 1 x Euro socket to connect other devices (rear panel max 200 watts)
 
* 7 channel graphic S.E.A. Equalizer ( ± 12 dB )
 
* Center frequencies: 63 Hz, 160 Hz, 400 Hz, 1.0 KHz, 2.5 KHz, 6.3 KHz, 16.0 KHz,
 
* 6 tones can be stored, 6 are pre-installed,
 
S.E.A. can change the sound of the tape recording (switchable).
 
* Input connections: Phono (MM + MC), Tuner, CD, AUX, Tape1, DAT,
 
Loudness: yes, (volume - 30 dB, + 6 dB 100 Hz, + 4 dB 10 KHz),
 
* Headphone jack: yes, 6.3 mm jack (stereo),
 
* automatic overload protection: yes (relay circuit),
 
* 2 speaker pairs: yes, (relay switchable),
 
* well suited for tape machines with rear band control,
 
* buffer capacitors: 2x 12,000 µF, 63 V
 
 
 
 
 
== Pictures ==
 
[[File:JVC_AX_R742.jpg|Beschreibung]]
 
 
 
[[File:RM_SA74U.jpg|Beschreibung]]
 
 
 
[[File:JVC_AX_R742_innen.jpg|Beschreibung]]
 
 
 
 
 
== Remarks ==
 
 
 
== Reports ==
 
  
 
== Links ==
 
== Links ==
  
[[Category:Integrated amplifier]]
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[[Kategorie:Tuner]]

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