Difference between revisions of "Revox B 780"

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== Daten ==
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== Data ==
{{Navigation}}
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{{navigation}}
'''Allgemein'''
+
'''General'''
* Hersteller: [[Revox]]
+
* Manufacturer: [[Revox]]
* Modell: B 780 (als B739 als reiner Vorverstärker ohne Endstufe)
+
* Model: B 780 (as B739 as tuner preamplifier without power amplifier)
* Typ: Receiver
+
Type: Receiver
* Baujahre: 1980 - 1984
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* Years of manufacture: 1980 - 1984
* Hergestellt in: Schweiz
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* Manufactured in: Switzerland
* Farbe: Silber / Grau
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* Color: Silver / Grey
* Fernbedienung: ja
+
* Remote control: yes- but only power on via "Power On Kit" from B710 Tape Deck
* Leistungsaufnahme: 550 W max.
+
* Power consumption: 550 W max.
* Abmessungen (BxHxT): 452 x 151 x 420 mm
+
* Dimensions (WxHxD): 452 x 151 x 420 mm
* Gewicht: 17 kg
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* Weight: 17 kg
* Neupreis ca.: 3'500 DM
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* Original price approx.: 3'500 DM
  
  
'''Anschlüsse'''
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'''Connections'''
* Anzahl der Eingänge:
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* Number of inputs:
** Phono MM: 2,7 - 50 mV, 47 kOhm, 50, 150, 450 pF umschaltbar, 160 mV max.
+
** Phono MM: 3.0 mV, 47 kOhm, 220 pF, 160 mV max.
** Phono MC: 0,1 - 2 mV, 100 Ohm, 6 mV max.
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** Phono MC: 0.1 - 2 mV, 100 Ohm, 6 mV max.
** CD: 250 mV, 47 kOhm, 8 V max.
+
Aux: 150 mV, 50 kOhm, 8 V max.
** Tape Play 1, 2: 250 mV, 47 kOhm, 8 V max.
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** Tape Play 1, 2: 150 mV, 50 kOhm, 8 V max.
** Tape Play DIN 1, 2: 250 mV, 47 kOhm, 8 V max.
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Tape Play DIN 1, 2: 150 mV, 50 kOhm, 8 V max.
** UKW Antenne: 75 Ohm, 300 Ohm
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FM antenna: 75 Ohm, 300 Ohm
** MW Antenne: 300 Ohm
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** MW antenna: 300 Ohm
* Anzahl der Ausgänge:
+
* Number of outputs:
** Tape Rec 1, 2: 250 mV, 680 Ohm
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** Tape Rec 1, 2: 135 mV, 47 kOhm.
** Tape Rec DIN: 30 mV, 80 kOhm
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** Tape Rec DIN: 5,5 mV, 10 kOhm
** Kopfhörer (6,3mm Klinke):
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** Pre Out 1, 2: 2 V, 4 V, 1 kOhm
** 2 Lautsprecherpaare
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** Headphones (6.3mm jack): 4 V, 220 Ohm
 +
** 2 speaker pairs
  
  
'''Technische Daten'''
+
'''Technical Data'''
  
''Verstärker''
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''Amplifier''
* Dauerleistung (bei Klirrfaktor)
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* Continuous power (at distortion)
 
** 8 Ohm: 2x 80 W (RMS, 20 - 20'000 Hz)
 
** 8 Ohm: 2x 80 W (RMS, 20 - 20'000 Hz)
 
** 4 Ohm: 2x 110 W
 
** 4 Ohm: 2x 110 W
* Dynamikleistung
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* Dynamic power
** 8 Ohm: 280 W
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** 8 Ohm: 110 W
** 4 Ohm: 440 W
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** 4 Ohm: 140 W
* Gesamtklirrfaktor: 0,01 %
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* Total harmonic distortion: 0.01 %
* Dämpfungsfaktor: 100 bei 8 Ohm
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* Attenuation factor: 100 at 8 Ohm
* Frequenzgang:  
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* Frequency response:  
 
** Phono: 20 - 20'000 Hz, ± 0,3 dB  
 
** Phono: 20 - 20'000 Hz, ± 0,3 dB  
** Hochpegel: 20 - 20'000 Hz, + 0 dB, - 0,3 dB
+
** High level: 20 - 20'000 Hz, + 0 dB, - 0,3 dB
* Signalrauschabstand:
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* Signal-to-noise ratio:
** Phono MM: 82 dB
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** Phono MM: 73 dB
** Line: 105 dB
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** Line: 90 dB
* Klangregelung:  
+
* Tone control:  
** Bass: ± 12 dB bei 40 Hz  
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** Bass: ± 8 dB at 120 Hz  
** Höhen: ± 10 dB bei 15 kHz  
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Presence: ± 8 dB at 3 kHz
* Loudness: + 10 dB bei 100 Hz
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Treble: ± 8 dB at 8 kHz  
* High Filter:  
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* Loudness: + 5 dB at 100 Hz, + 6 dB at 10 kHz
* Low Filter (Subsonic): - 3 dB bei 15 Hz, 12 dB / Oktave
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* High Filter: - 3 dB at 8 kHz, 12 dB / octave
* Mute: - 20 dB
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* Low Filter (Subsonic): - 3 dB at 18 Hz, 12 dB / octave
 +
Mute: - 20 dB
  
  
 
''Tuner''
 
''Tuner''
* Empfang: UKW, MW
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* Reception: FM, MW
* Frequenzen:
+
* Frequencies:
** UKW: 87,5 - 108 MHz
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** FM: 87.5 - 108 MHz
 
** MW: 530 - 1610 kHz  
 
** MW: 530 - 1610 kHz  
* Eingangsempfindlichkeit:
+
* Input sensitivity:
** UKW: 2,5 µV
+
** FM: 2.5 µV
 
** MW: 25 µV
 
** MW: 25 µV
* Frequenzgang: 20 - 15'000 Hz, + 0,3 dB, - 0,8 dB
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* Frequency response: 20 - 15'000 Hz, + 0,3 dB, - 0,8 dB
* Klirrfaktor:  
+
* Distortion factor:  
** Mono: 0,08 %
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** Mono: 0.08 %
** Stereo: 0,1 %
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Stereo: 0.1  
* Signalrauschabstand:
+
* Signal-to-noise ratio:
** UKW:
+
** FM:
 
*** Mono: 78 dB
 
*** Mono: 78 dB
 
*** Stereo: 72 dB
 
*** Stereo: 72 dB
 
** MW: 50 dB
 
** MW: 50 dB
* Kanaltrennung: 50 dB
+
* Channel separation: 50 dB
* Trennschärfe: 60 dB
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* selectivity: 60 dB
* Gleichwellenselektion: 0,8 dB
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* Co-wave selection: 0.8 dB
* Nebenwellenselektion: 110 dB
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* Spurious wave selection: 110 dB
* Spiegelfrequenzdämpfung: 110 dB
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* IF attenuation: 110 dB
* ZF-Dämpfung: 110 dB
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* IF attenuation: 110 dB
* MW Unterdrückung: 72 dB
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* MW suppression: 72 dB
* Stationsspeicher: UKW, MW insgesamt 29 Speicherplätze zur freien Programmierung
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* Station memory: FM, MW a total of 29 memory locations for free programming
  
  
'''Besondere Ausstattungen'''
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'''Special Features'''
* Ton Linear-Schalter
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* Tone Linear switch
 
* Tape Dubbing
 
* Tape Dubbing
* Peak Anzeige
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* Automatic station search
* Automatischer Sendersuchlauf
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* Mono / Stereo switchable
* ZF-Band umschaltbar: Narrow / Wide
 
* Mono / Stereo umschaltbar
 
  
 
+
== Remarks ==
== Bemerkungen ==
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* Other models in the same series:
* Weitere Modelle der gleichen Serie:
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* Amplifier:
* Verstärker:
 
 
* [[Revox B 750]]
 
* [[Revox B 750]]
 +
* [[Revox B 750 MK II]]
  
  
* Endverstärker:
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* Power amplifier:
 
* [[Revox A 740]]
 
* [[Revox A 740]]
  
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* Prececeiver:
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* Preceiver:
 
* [[Revox B 739]]
 
* [[Revox B 739]]
  
  
* CD-Player:
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* CD player:
 
* [[Revox B 126]]
 
* [[Revox B 126]]
  
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* Spulentonband:
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* Reel Tape:
 
* [[Revox B 77]]
 
* [[Revox B 77]]
  
  
* Plattenspieler:
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* Record player:
 
* [[Revox B 790]]
 
* [[Revox B 790]]
 
* [[Revox B 795]]
 
* [[Revox B 795]]
  
  
* Lautsprecher:
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* Loudspeakers:
 
* [[Revox BR 320]]
 
* [[Revox BR 320]]
 
* [[Revox BR 430]]
 
* [[Revox BR 430]]
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== Bilder ==
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== Pictures ==
* Bild: Revox B 780
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* Image: Revox B 780
[[Datei:Revox B-780-1.jpg]]
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[[File:Revox B-780-1.jpg]]
 +
 
 +
 
 +
* Extract from brochure: Revox B 780
 +
[[File:Revox B-780-Prospekt-1984.jpg]]
  
  
== Berichte ==
+
== Reports ==
 
* Audio  
 
* Audio  
** 07/1980: Urteilsauszug siehe Revox-Webseite/Link 01/2017
+
** 07/1980: verdict excerpt see Revox website/link 01/2017.
** 06/1983: Vergleichstest u.a. mit Braun R1 [[Braun Atelier Serie]]
+
** 06/1983: Comparison test with, among others, Braun R1 [[Braun Atelier Series]]
 
* Stereoplay 02/1981
 
* Stereoplay 02/1981
  
  
 
== Links ==
 
== Links ==
* [https://www.revox.com/de/classics/siebzigerjahre/b700.html B 700-Serie auf Revox-Webseite]
+
* [[https://www.revox.com/de/classics/siebzigerjahre/b700.html B 700 series on Revox website]]
 +
 
  
[[Kategorie:Receiver]]
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[[Category:Receiver]]

Latest revision as of 05:25, 21 August 2019

Data[edit]

General

  • Manufacturer: Revox
  • Model: B 780 (as B739 as tuner preamplifier without power amplifier)

Type: Receiver

  • Years of manufacture: 1980 - 1984
  • Manufactured in: Switzerland
  • Color: Silver / Grey
  • Remote control: yes- but only power on via "Power On Kit" from B710 Tape Deck
  • Power consumption: 550 W max.
  • Dimensions (WxHxD): 452 x 151 x 420 mm
  • Weight: 17 kg
  • Original price approx.: 3'500 DM


Connections

  • Number of inputs:
    • Phono MM: 3.0 mV, 47 kOhm, 220 pF, 160 mV max.
    • Phono MC: 0.1 - 2 mV, 100 Ohm, 6 mV max.

Aux: 150 mV, 50 kOhm, 8 V max.

    • Tape Play 1, 2: 150 mV, 50 kOhm, 8 V max.

Tape Play DIN 1, 2: 150 mV, 50 kOhm, 8 V max. FM antenna: 75 Ohm, 300 Ohm

    • MW antenna: 300 Ohm
  • Number of outputs:
    • Tape Rec 1, 2: 135 mV, 47 kOhm.
    • Tape Rec DIN: 5,5 mV, 10 kOhm
    • Pre Out 1, 2: 2 V, 4 V, 1 kOhm
    • Headphones (6.3mm jack): 4 V, 220 Ohm
    • 2 speaker pairs


Technical Data

Amplifier

  • Continuous power (at distortion)
    • 8 Ohm: 2x 80 W (RMS, 20 - 20'000 Hz)
    • 4 Ohm: 2x 110 W
  • Dynamic power
    • 8 Ohm: 110 W
    • 4 Ohm: 140 W
  • Total harmonic distortion: 0.01 %
  • Attenuation factor: 100 at 8 Ohm
  • Frequency response:
    • Phono: 20 - 20'000 Hz, ± 0,3 dB
    • High level: 20 - 20'000 Hz, + 0 dB, - 0,3 dB
  • Signal-to-noise ratio:
    • Phono MM: 73 dB
    • Line: 90 dB
  • Tone control:
    • Bass: ± 8 dB at 120 Hz

Presence: ± 8 dB at 3 kHz Treble: ± 8 dB at 8 kHz

  • Loudness: + 5 dB at 100 Hz, + 6 dB at 10 kHz
  • High Filter: - 3 dB at 8 kHz, 12 dB / octave
  • Low Filter (Subsonic): - 3 dB at 18 Hz, 12 dB / octave

Mute: - 20 dB


Tuner

  • Reception: FM, MW
  • Frequencies:
    • FM: 87.5 - 108 MHz
    • MW: 530 - 1610 kHz
  • Input sensitivity:
    • FM: 2.5 µV
    • MW: 25 µV
  • Frequency response: 20 - 15'000 Hz, + 0,3 dB, - 0,8 dB
  • Distortion factor:
    • Mono: 0.08 %

Stereo: 0.1

  • Signal-to-noise ratio:
    • FM:
      • Mono: 78 dB
      • Stereo: 72 dB
    • MW: 50 dB
  • Channel separation: 50 dB
  • selectivity: 60 dB
  • Co-wave selection: 0.8 dB
  • Spurious wave selection: 110 dB
  • IF attenuation: 110 dB
  • IF attenuation: 110 dB
  • MW suppression: 72 dB
  • Station memory: FM, MW a total of 29 memory locations for free programming


Special Features

  • Tone Linear switch
  • Tape Dubbing
  • Automatic station search
  • Mono / Stereo switchable

Remarks[edit]











Pictures[edit]

  • Image: Revox B 780

Revox B-780-1.jpg


  • Extract from brochure: Revox B 780

Revox B-780-Prospekt-1984.jpg


Reports[edit]

  • Audio
    • 07/1980: verdict excerpt see Revox website/link 01/2017.
    • 06/1983: Comparison test with, among others, Braun R1 Braun Atelier Series
  • Stereoplay 02/1981


Links[edit]