Fully Serviced B77 MKII Tape Recorder
The B77 MKII tape recorder was built from 1980-1998. A true classic and milestone in the audio world, like its predecessor the MKI. The B77 MKII is equipped with a built-in sound motor control (Vari-Speed Control) and revised audio and drive electronics.
This particular unit is a 2-track 1/4″ deck that can run at two different speeds: 7 1/2 and 15 IPS. This is the configuartion out of the many available you would be looking for in a professional environment. With the signal stretching across the whole 1/4″ tape and a speed of 15 IPS you will get maximum magnetic recording performance possible.
To ensure this unit is up for the job in a studio, all electronic have been revised. There is no board untouched, with electrolytic capacitors swapped out or other components replaced. The heads are in excellent condition and have been cleaned and demagnetised as well as the pinch roller replaced. Excellent sounding unit with extremely low noise floor.
We have multiple ReVox units in stock, waiting to be serviced and also have spare parts. Every open reel deck we sell comes with 6 months warranty and we are capable of providing any service required at any time.
Feel free to enquire over the phone or visit use to audition this deck.
Specifications
Dimensions
weight (kg):17
depth (mm):207
height (mm):414
width (mm):452
Drive
Three-motor drive 2 AC coil motors 1 AC sound motor electronically controlled
Noise-to-voltage ratio (according to ASA-A, measured over band)
>64 dB (9,5cm/sec), >67 dB (19cm/sec)
Frequency response over tape
30 Hz bis 20 kHz + 2 dB bis – 3 dB, 30 Hz bis 16 kHz + 2 dB bis – 3 dB
Tape speed
HS 19,05/38,1 cm/s, NS 9,5/19,05 cm/s, LS 4,75/9,5 cm/s, SLS 2,38/4,75 cm/s
Power consumption
max. 80 VA
Synchronisation fluctuation
38 cm/s < 0,06 %, 9.5 cm/s < 0,10 %, 19 cm/s < 0,08 %
Equipment
11 ICs, 1 optocoupler, 4 triacs, 60 transistors, 33 diodes, 5 LEDs, 2 bridge rectifiers, 3 relays
Slip
max. 0,2 %
Rewind time
135 sec. for 1100m tape
Coil size
up to 26.5 cm (10.5 inch)
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