Difference between revisions of "Revox B 780"

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== Kurzbeschreibung ==
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__NOTOC__
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Receiver der Revox B 700-Serie
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== Data ==
 +
{{navigation}}
 +
'''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 ==
 +
* Other models in the same series:
 +
* Amplifier:
 +
* [[Revox B 750]]
 +
* [[Revox B 750 MK II]]
 +
 
 +
 
 +
* Power amplifier:
 +
* [[Revox A 740]]
 +
 
 +
 
 +
* Tuner:
 +
* [[Revox B 760]]
 +
 
 +
 
 +
* Receiver:
 +
* [[Revox B 780]]
 +
 
  
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== Daten ==
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* Preceiver:
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'''Allgemein'''
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* [[Revox B 739]]
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* Hersteller: [[Revox]]
 
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* Modell: B 780
 
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* Baujahre:  1980- 1984.
 
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* Hergestellt in:
 
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* Farbe: Alu/grau-anthrazit.
 
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* Abmessungen (B/H/T): 452 mm/?/? (B 700-Serie).
 
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* Gewicht: X kg
 
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* Neupreis ca.: 3000 DM.
 
  
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'''Anschlüsse'''
 
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* hier die Anschlussmöglichkeiten aufführen, falls bekannt.
 
  
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'''Technische Daten'''
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* CD player:
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* hier die Technischen Daten aufführen, falls bekannt.
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* [[Revox B 126]]
  
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'''Besondere Ausstattungen'''
 
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* hier, wenn vorhanden
 
  
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== Bemerkungen ==
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* Tape Deck:
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Weitere Modelle der gleichen Serie:
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* [[Revox B 710]]
 +
 
 +
 
 +
* Reel Tape:
 +
* [[Revox B 77]]
 +
 
 +
 
 +
* Record player:
 +
* [[Revox B 790]]
 +
* [[Revox B 795]]
 +
 
 +
 
 +
* Loudspeakers:
 +
* [[Revox BR 320]]
 +
* [[Revox BR 430]]
 +
* [[Revox BR 530]]
 +
* [[Revox Symbol B]]
 +
* [[Revox Triton B]]
 +
 
 +
 
 +
== Pictures ==
 +
* Image: Revox B 780
 +
[[File:Revox B-780-1.jpg]]
 +
 
 +
 
 +
* Extract from brochure: Revox B 780
 +
[[File:Revox B-780-Prospekt-1984.jpg]]
 +
 
 +
 
 +
== Reports ==
 +
* 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
 +
 
  
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== Bilder ==
 
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* siehe Link.
 
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== Testberichte ==
 
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* Audio 7/1980 (Urteilsauszug siehe Revox-Webseite/Link 8/2015.)
 
 
== Links ==
 
== Links ==
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* [http://www.revox.com/de/classics/b700-serie.html B700-Serie auf Revox-Webseite]
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* [[https://www.revox.com/de/classics/siebzigerjahre/b700.html B 700 series on Revox website]]
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__NOTOC__
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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]

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