Editing Dual CR 1780

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__NOTOC__
 
__NOTOC__
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== Data ==
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== Daten ==
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{{navigation}}
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{{Navigation}}
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'''General'''
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'''Allgemein'''
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* Manufacturer: [[Dual]]
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* Hersteller: [[Dual]]
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* Model: CR 1780
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* Modell: CR 1780
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* Years of manufacture: 1979 - 1981
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* Baujahre: 1979 - ?
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* Made in: Japan
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* Hergestellt in: Japan
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* Color: Metallic silver, Metallic brown
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* Farbe: metallic-silber, metallic-braun
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* Remote control: no
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* Fernbedienung: nein
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* Power consumption: 450 W (at rated power)
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* Leistungsaufnahme: 450 W (bei Nennleistung)
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* Dimensions: 440 x 150 x 405 mm (WxHxD)
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* Abmessungen: 440 x 150 x 405 mm (BxHxT)
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* Weight: 14 kg
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* Gewicht: 14 kg
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* Original price approx.: 1'398 DM
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* Neupreis ca.:
  
  
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'''Connections'''
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'''Anschlüsse'''
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* Number of inputs:
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* Anzahl der Eingänge:
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** Phono (MM): 1.5 mV / 47 kOhm.
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** Phono (MM): 1,5 mV / 47 kOhm
 
** AUX, Monitor In, 2x Tape In: 150 mV / 470 kOhm
 
** AUX, Monitor In, 2x Tape In: 150 mV / 470 kOhm
 
** Main In
 
** Main In
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* Number of outputs:
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* Anzahl der Ausgänge:
 
** 2x Tape Out, Monitor Out
 
** 2x Tape Out, Monitor Out
 
** Pre Out
 
** Pre Out
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** Headphones (6.3 mm jack, front)
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** Kopfhörer (6,3 mm Klinke, vorne)
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** 2 pairs of speakers
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** 2 Lautsprecherpaare
  
  
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'''Technical Data'''
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'''Technische Daten'''
  
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''Amplifier''
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''Verstärker''
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* Continuous power (at distortion)
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* Dauerleistung (bei Klirrfaktor)
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8 Ohm: 2x 80 W
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** 8 Ohm: 2x 80 W
 
** 4 Ohm:
 
** 4 Ohm:
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* Dynamic power
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* Dynamikleistung
 
** 8 Ohm: 2x 120 W
 
** 8 Ohm: 2x 120 W
 
** 4 Ohm:
 
** 4 Ohm:
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* Total harmonic distortion: 0.04% (2x 80 W, 1 kHz)
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* Gesamtklirrfaktor: 0,04% (2x 80 W, 1 kHz)
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* Attenuation factor: > 20
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* Dämpfungsfaktor: > 20
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* Frequency response:  
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* Frequenzgang:  
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** 10 - 60,000 Hz (DIN 45 500)  
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** 10 - 60.000 Hz (DIN 45 500)  
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10 - 40,000 Hz (±1.5 dB)  
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** 10 - 40.000 Hz (±1,5 dB)  
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* Signal-to-noise ratio: (DIN, nominal power)  
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* Signalrauschabstand: (DIN, Nennleistung)  
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** Phono: > 62 dB
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** Phono: > 62 dB
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High level: > 80 dB
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** Hochpegel: > 80 dB
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* Stereo channel separation:
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* Stereokanaltrennung:
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* Tone control:
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* Klangregelung:
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** Bass: yes, ±15 dB at 50 Hz
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** Bass: ja, ±15 dB bei 50 Hz
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treble: yes, ±15 dB at 15 kHz
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** Höhen: ja, ±15 dB bei 15 kHz
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* Loudness: yes
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* Loudness: ja
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* High Filter: yes, -3dB at 8.5 kHz (12 dB/oct)
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* High Filter: ja, -3dB bei 8,5 kHz (12 dB/oct)
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* Low Filter: yes, -3dB at 70 Hz (12 dB/oct)
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* Low Filter (Subsonic): ja, -3dB bei 70 Hz (12 dB/oct)
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* Subsonic Filter: no
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* Mute: ja
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* Mute: yes
 
 
* Direct/Line-Straight:
 
* Direct/Line-Straight:
  
  
 
''Tuner''
 
''Tuner''
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* Reception: FM, MW
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* Empfang: UKW, MW
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* Frequencies:
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* Frequenzen:
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** FM: 87.5 - 104.05 MHz
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** UKW: 87,5 - 104,05 MHz
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MW: 513 - 1,602 kHz
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** MW: 513 - 1.602 kHz
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* Frequency response: 40 - 12,500 Hz  
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* Frequenzgang: 40 - 12.500 Hz  
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* Input sensitivity:
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* Eingangsmpfindlichkeit:
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** FM: 0.6 µV (mono), 18 µV (stereo).
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** UKW: 0,6 µV (Mono), 18 µV (Stereo)
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MW: 15 µV  
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** MW: 15 µV  
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* Distortion factor: 0.3% (mono/stereo)
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* Klirrfaktor: 0,3% (Mono/Stereo)
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Signal-to-noise ratio: 60 dB (mono/stereo)
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* Signalrauschabstand: 60 dB (Mono/Stereo)
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* Channel separation:  
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* Kanaltrennung:  
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* Selectivity: 85 dB
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* Trennschärfe: 85 dB
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* Co-wave selection:
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* Gleichwellenselektion:
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* Spurious wave selection:
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* Nebenwellenselektion:
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* Image frequency attenuation: 75 dB
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* Spiegelfrequenzdämpfung: 75 dB
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* IF attenuation: 100 dB
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* ZF-Dämpfung: 100 dB
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* AM suppression:
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* AM-Unterdrückung:
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* Output level: for TB(1kHz,5mV at phono input) at cinch-> 320mV; at DIN(10kOhm)-> 10mV.
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* Ausgangspegel: für TB(1kHz,5mV am Phono-Eingang) an cinch-> 320mV; an DIN(10kOhm)-> 10mV
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RDS: no
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* RDS: nein
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* Station memory: 6
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* Stationsspeicher: 6
  
  
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'''Special Features'''
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'''Besondere Ausstattungen'''
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* Separable pre-/power stage
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* Auftrennbare Vor-/Endstufe
  
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== Remarks ==
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== Bemerkungen ==
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* Other models in the same series:
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Weitere Modelle der gleichen Serie:
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* [[Dual CR 1710]]
 
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* [[Dual CR 1730]]
 
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* [[Dual CR 1750]]
 
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* [[Dual CR 1780]]
 
  
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== Bilder ==
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[http://foto.arcor-online.net/palb/alben/11/1259611/1280_3062353064396664.jpg]
  
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== Pictures ==
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== Berichte ==
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* Image: Dual CR 1780
 
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[[File:Dual CR-1780-1.jpg]]
 
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* Excerpt from brochure: Dual CR 1750 / CR 1780
 
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[[File:Dual CR-1750-CR-1780-Prospekt-1.jpg]]
 
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== Reports ==
 
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The receiver is very heavy with two power supplies and has a quality build. Unfortunately, it does not have a backup battery, for permanently storing transmitters in case of a power failure. However, it does not originate any more from the house DUAL and was manufactured in Japan (presumably with Onkyo) for DUAL. Corresponding notes (Made under DUAL-Specifications in Japan) can also be found on the nameplate, on the back of the unit. In terms of internal construction, this is a typically solid Japanese unit. Its sound can be described (subjectively) as warm and harmonic. Quite a few DUAL fans prefer it to the amplifier/tuner combinations of the DUAL International series (e.g. CV1700 + CT1640, etc.). Also, the aluminium knobs and controls are of considerably better quality than those of the DUAL units produced in Germany. This is especially good for the noble appearance of the receiver, since the turned surfaces of the aluminium knobs - in contrast to the real DUAL devices, where they often appear weathered with age - can be easily restored to their original appearance even after years of use. All in all, this receiver is a very valuable, rock-solid audio device, which is often traded among collectors of DUAL devices as an insider tip in terms of sound and workmanship.
 
  
 
== Links ==
 
== Links ==
  
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[[Kategorie:Receiver]]
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[[Category:Receiver]]
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[http://dual.pytalhost.eu/1979/dual79-36.jpg]

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