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enfrdeitrues

REVOX A77

Technic details

Specifications

Type:
Reel to Reel Tape Recorder
Tracks:
2 or 4
Motors:
2 x Reel 6-pole outer-rotor motors
1 x Capstan AC servo outer-rotor motor
Reel size:
Up to 10.5” reel
Used position:
Horizontal and vertical
Heads:
1 x Recording, 1 x Playback, 1 x Erase
Equalization:
NAB, IEC
Tape speeds:
3 ¾ ips, 7 ½ ips
Wow and flutter:
Less than 0.08% (7 ½ ips)
Less than 0.1% (3 ¾ ips)
Tape slip:
Not exceeding 0.2%
Frequency response:
30Hz to 20kHz, +2dB -3dB (7 ½ ips)
50Hz to 15kHz, ±1.5dB (7 ½ ips)
30Hz to 16kHz, +2dB -3dB (3 ¾ ips)
50Hz to 10kHz, ±1.5dB (3 ¾ ips)
Signal-to-Noise Ratio:
Better than 66dB (2-track, 7 ½ ips)
Better than 62dB (4-track, 7 ½ ips)
Better than 63dB (2-track, 3 ¾ ips)
Better than 59dB (4-track, 3 ¾ ips)
Total harmonic distortion (1kHz, 0 VU):
Less than 2% or 0.6% respectively (7 ½ ips)
Less than 3% or 1% respectively (3 ¾ ips)
Crosstalk:
60dB (1kHz, mono)
45dB (Stereo)
Bias frequency:
120kHz
Overload margin for each input:
40dB
Input / Impedance:
35mV - 3.5V / 1MΩ (AUX)
2.5 - 250mV / 33kΩ (Radio)
0.15 - 15mV / 50 - 600Ω (Mic, low impedance)
2.5 - 250mV / 2.2 – 100kΩ (Mic, high impedance)
Output / Impedance:
2.5V / 600Ω (Output amplifier)
1.2V / 2.5 kΩ (Radio)
200Ω or higher (Headphones)
Output power:
8W continuous average power per channel (8Ω, 1% THD)
Nominal impedance:
4 to 16Ω
Semiconductors used:
54 x Transistors, 32 x Diodes, 4 x Silicon rectifiers, 1 x Light dependent resistor, 4 x Relays
Power supply:
C 110 / 130 / 150 / 220 / 240 / 250V (Switchable), 50 / 60Hz
Power requirements:
70W (Without power stages)
70W to 100W (With power stages)
Dimensions (W x H x D):
415 x 359 x 180mm
Weight:
Approximately 15kg
Year:
1967

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