Revox B 710

Data

General

• Manufacturer: Revox
• Model: B 710 MK I
• Years of manufacture: 1981 - 1982
• Made in: West Germany
• Color: silver
• Remote control: yes, cable remote control optional
• Power consumption:
• Housing dimensions (WxHxD): 452 x 151 x 352 mm.
• Weight: approx. 10 kg
• Original price approx.: 2'500 DM

Connections

• Number of inputs:
  • Sensitivity for 0 dB level control:
    • MIC (unbalanced) 0.35 mV/10 kOhm
    • LINE 70 mV/220 kOhm
• Number of outputs:
• Sensitivity for 0 dB = 200 nWb / m
  • LINE OUTPUT: max. 0.775 V, 390 Ohm, max. 1.5 kOhm (RL > 10 kOhm), adjustable with level control -26 dB

Headphones: max. 2.45 V, optimal for headphones of 200... 600 Ohm, separately adjustable via volume control

Technical data

• Drive

4-motor double-capstan-drive

• • DC-winding motors controlled via yP
  • 2 individually quartz-controlled direct-drive Capstan motors

7-segment display

• • Tape counter 4-digit, switchable to clock function Tape speed:4.76 cm/s
• Tone pitch fluctuation

(according to DIN 45507) IEC 386: 0, 1 % for C60 and C90

• Cassettes that can be used
  • C46 to C120 technical data guaranteed up to C90

Rewinding times approx. 45 s for C60 approx. 65 s for C90

• Noise reduction system

Dolby B, MPX filter switchable

• Playback equalisation
  • 3180 + 120ys for IEC I
  • 3180 + 70 ys for IEC II + IV,
  • manually selectable or automatic via cassette encoding Tape output control:
  • 200 nWb/m for 0 dB indication on peak meter.

distortion: at 315 Hz; 0 dB

• • I: better than 0.8%
  • II: better than 1.5%

IV: better than 1.5% Frequency Response: (measured over band at -20 dB)

• • I: 30 Hz-18 kHz + 2/-3 dB
  • II: 30 Hz-20 kHz + 2/-3 dB

IV: 30 Hz-20 kHz + 2/-3 dB

• Silent-to-noise ratio: > 72 dB
• Crosstalk attenuation: at 1 kHz: better than 40 dB
• Pre-magnetization & extinction frequency: 105 kHz
• Overload immunity of all inputs

40 dB (1: 100)

Remarks

• First cassette deck from the house Revox, which had already produced excellent [tape machines]
• The frequency response of this deck reached for example that of the Revox A 77 tape machine at half tape speed.
• Drive construction without belts and slipping clutches

• Another model of the same series:
• Revox B 710 MK II with Dolby C (lt Revox website).

Pictures

• Picture: Revox B 710

Test reports

• Stereoplay 9/1982: "Spitzenklasse II" (same group as the legendary Nakamichi Dragon; best classification of cassette decks by Stereoplay at the time; for tape machines "Spitzenklasse I").

Links

• [B700 series at Studer-Revox-Infoportal]
• List High end cassette decks in comparison.