Revox B77 MKII - 7.5 IPS & 15 IPS RARE

SKU: Revox B77 MKII - 7.5 IPS & 15 IPS RARE
Description: 

Revox B77 MKII - 7.5 IPS & 15 IPS RARE

Up for sale is the Revox B77 MKII this unit is in very nice condition and will be packed accordingly, it was fully serviced by Columbus radio in Winnipeg Manitoba, they are known for their high quality servicing of classic audio gear. It received a full cleaning and adjustments bringing it up to factory spec I will be adding more pictures shortly

Tape transport mechanism:

3-motor tape drive, 2 AC driven spooling motors; 1 AC driven capstan motor, electronically regulated

Tape speeds:

3.75 and 7.5 ips or 7.5 and 15 ips, electronic change-over

Tolerance from nominal:
With external accessory, speed variable:

± 0.2%
from: 2.5 ... 11 ips (3.75/7.5 ips machines)
5 ... 22 ips (7.5/15 ips machines)

Wow and flutter
(as per DIN 45507/ consistent with EEE standard 193-1971):

at 3.75 ips less than 0.1%
at 7.5 ips less than 0.08%
at 15 ips less than 0,06%

Tape slip:

Max 0.2%

Reel size:

Up to 10.5 inch diameter
(min. hub diameter 2.36 inches)
tape tension switchable (for small hub diameters)

Winding time:

Approx. 135 sec for 3600 ft of tape

Tape transport control

Integrated control logic with tape motion sensor provides for any desired transition between different operating modes. Contactless electronic switching all motors. Remote control of all functions and electronic timer operation are possible.

Equalization
(as per NAB):

3.75 ips: 90 µsec / 3180 µsec
7.5 ips: 50 µsec / 3180 µsec
15 ips: 50 µsec / 3180 µsec

Frequency response
(measured via tape, at -20 VU):

At 3.75 ips:
30 Hz ... 16 kHz +2 / -3 dB
50 Hz ... 10 kHz ± 1.5 dB

At 7.5 ips:
30 Hz ... 20 kHz +2 / -3 dB
50 Hz ... 15 kHz ± 1.5 dB

At 15 ips:
30 Hz ... 22 kHz +2 / -3 dB
50 Hz ... 18 kHz ± 1.5 dB

Peak recording level:

514 nWb/m corresponds to 6 dB above 0 VU

Level metering:

VU meter as per ASA standard with LED peak level indicators

Distortion

 

At 0 VU
(257 nWb/m)

At 0 VU + 6 dB
(257 nWb/m)

At 3.75 ips:

< 1%

< 2.5%

At 7.5 ips:

< 0.6%

< 1.5%

At 15 ips:

< 0.6%

> 1.5%

Signal to noise ratio
(weighted as per ASA-A, measured with tape)

Half track

At 3.75 ips better than 64 dB
at 7.5 ips better than 67 dB
at 15 ips better than 65 dB

 

Quarter track

At 3.75 ips better than 60 dB
at 7.5 ips better than 63 dB

Crosstalk
(1000 Hz):

Stereophonic
Monophonic

Better than 45 dB
Better than 60 dB

Erase depth:

At 7.5 ips better than 75 dB

Inputs per channel

 

MIC (unbalanced)

Position LO:

0.15 mV / 2.2 kOhms
for 50 ... 600 Ohms microphones

 

Position HI:

2.8 mV / 110 kOhms
for microphones impedances up to 20 kOhms

Radio:

2.8 mV / 20 kOhms

 

AUX:

40 mV / 220 kOhms

Overload margin on all inputs:

40 dB (1:100)

Outputs per channel
(level at 6 dB above 0 VU / 514 nWb/m):

OUTPUT

1.55 V, internal resistance 390 Ohms adjustable with preset control, max. attenuation -26 dB (Rj max. 1.5 kOhms)

RADIO:

1.55 V, internal resistance 4.7 kOhms adjustable with preset control, max. attenuation -26 dB

 

PHONES:

(2 x) max 5.6 V, internal resistance 220 Ohms, short-circuit proof, optimum matching impedance 200 ... 600 Ohms

Connectors for:

Remote control of tape transport functions
Remote control of variable tape speed
Slide projector or crossfade unit
(electronics optional)

Semi-conductor complement:

11 IC, 1 opto-coupler, 4 Triac, 60 transistors, 33 diodes, 5 LED, 2 full wave rectifiers, 3 relays

Electric current supply
(voltage sector):

100,120,140,200, 220,240 V
50 ... 60 Hz, max 80 W

Main fuse:

100 ... 140 V: 1 A slow-blowing
200 ... 240 V: 0,5 A slow-blowing

Weight:

Approx. 37 lbs. 7 ozs (17 kg)

Dimensions (W x H x D):

17.8 x 16.3 x 8.14 inches
(452 x 414 x 207 mm )

Required clearance for 10.5 inch reels:

Max width: 21.2 inches (538mm)
Max height: 18.25 inches (463.5 mm)

Our Price:
$2,678.51
Free Shipping
(Only in North America)
Condition: 
Trade In
Shipping Time: 
72 Hours

For questions please call us
at 1-877-236-4434
or email us at: sales@canadianhifi.com