Page 1
1978 Revox B77
right channel the figure was -67.5dB, other figures being better still. \
Whilst stability was very good, phase
jitter was average but adequate, crosstalk was very good up to HF, but E\
HF measured 43dB at 15kHz. Wow
and flutter measured better with the machine vertical, the figures being\
regarded as good, although 19cm/s
measured better still on the low speed version. Speed accuracy was withi\
n 0.15% which is incredible, and
spooling was fast for a LP NAB at 2m 12s, and neater than of old.
I am very happy to recommend highly both low and high-speed models, alth\
ough it is a pity that each has
only two speeds. All presets were set very accurately at the factory, an\
d both models checked were very
reliable and much liked ergonomically. Note that variations in mains vol\
tage are accommodated, and 50 or
60Hz mains frequency alternatives present no problem since the motor spe\
ed is electronically controlled.
Other variants include speed combinations of 2.4/4.8cm/s, 4.8/9.5cm/sec,\
professional balanced line in/out
socket version, and a version incorporating loudspeaker amplifiers and i\
nternal speakers. Almost every
version is available as rack mounting or portable. Three forms of slide \
sync having an extra head can be
supplied, and a sel-sync model allows one channel to be brought up from \
the record head whilst the other
channel is recording for adding a synchronised new track recording.
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Page 2
1978 Revox B77
GENERAL DATA
Mike i/p: sens/clipping/noise .................... 250uV/340mV/-60dB
Line i/p: sens/clipping .................................... 54mV/4.5V
DIN i/p: sens/clipping/impedance ................ -22dB/25dB/20kohm
DIN i/p noise ref DL+4dB (CCIR/ARM)...................... -76dB
Meter quality................................................ v. good
Worst replay hum component......................... -65.5dB [50Hz]
Replay hiss (CCIR/ARM ref DL) 9.5/19/38cm/s........ -/-70/-70dB
Replay amp clipping (ref DL)/distortion................. +17dB/v. good\
Max line output (DL) ........................................ 710mV
Dist point (333Hz 3 3rd MOL ref DL)
9.5/19/38cm/s..................................-/+11.4/+12.7dB
Overall noise (CCIR/ARM ref DL) 9.5/19/38cm/s . . ..-/-59/-58.5dB
Worst erase Figure.......................................... -67.5dB
Overall wow and flutter (DIN) av/worst 19cm/s ......... 0.05%/0.056%
38cm/s ......... 0.03%/0.042%
Speed accuracy (worst) -0.15%
Approx dimensions (W/H/D). ............................ 45/41/21cm
Approx weight................................................. 17kg
Approx typical price ........................................... £700\
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