Widely
acclaimed throughout the world for its superb craftsmanship, the ReVox tape
recorder is now available for the first time in U.S. and Canadian markets. The
discriminating audiophile is well aware that there can be no compromise with
quality and that the excellence of tape recordings is directly dependent on the
skill and care used in the manufacture of their tape recorder. Quality control,
constant checking and testing during every phase of ReVox manufacture and the
use of highly rated components are the hallmarks of this superior instrument. ReVox is
backed by a tradition of almost two decades in the manufacture of studio and
broadcast tape equipment. The experience gained has resulted in ideas which
have been incorporated into each ReVox. The ReVox, the instrument of choice by
amateur and professional tape recordists, is also used in numerous industrial
applications, in universities, as a teaching aid.. And as the focal point in
home entertainment centers. Its
applications are seemingly limitless. Its quality is singular.
Professional
Features of the ReVox
Push-button
electrical control of all operating modes.
Spool
turnscounter.
Remote
control facility.
Recorder can
be used as an amplifier by switching off the capstan motor.
Additional
low-impedence speakers can be connected.
Handy
carrying case with pockets for two 10 ½" reels.
Constant
speed hysteresis-synchronous heavy duty Pabst motor using direct drive of
capstan. No belt of friction drives for the capstan shaft.
No pressure
pads to clean - no pressure pads to wear out. This assures long head life and
avoids longitudinal vibrations of the tape.
Three
ring-core heads (2- or 4-track).
Separate
pabst Outer-Rotor motors fro wind and rewind.
Tape
speeds of 7½ and 3¾ i.p.s. obtainable through pole switching of
capstan motor.
Reel
size selector assures uniform tape tension for reels up to 10 ½ inches.
Recorder may
be operated horizontally or vertically. Tape reels can be locked on to their
shafts.
Two separate
recording and replay amplifiers.
Cathode-follower
low-impedance outputs.
Six-watt
built-in monitor amplifier.
Two
VU-meters with dynamic characteristics as per the ASA for individual record
level control.
Both inputs
may be mixed for mono-recordings.
Duoplay
(sound with sound), Multiplay (sound on sound) and echo are possible wihout
accessories.
Special
Design of The ReVox
Three PABST
Outer-Rotor Motors
Three motors
are usually found only in professional tape recorders. This rather costly
design assures optimum performance especially regarding to wow and flutter, and
it is mechanically simple without containing any fast wearing parts.
A design unique for an amateur recorder. Consisting of five
diecastings, these parts, when attached to one another, from the very rigid
unit which carries the head-block and
tape-guides. This assures perfect and permanent head alignment under the
roughest operating conditions. The powerful Hysteresis-Synchronous-Motor and
the heavy accurately balanced flywheel are mounted in a diecast cage. The
runout of the capstan shaft must not exceed 0,001 mm in order to pass inspection.
This is a degree of accuracy found only in studio an broadcast equipments.
6/12
Hysteresis-Synchronous Motor
The
heavy-duty direct drive capstan motor is a hysteresis synchronous unit. The
speed is electrically changed by controlling the number of poles. Maximum
playing time can be had by setting the tape speed at 33 ¾ ips or superior quality by using a tape speed
of 7 ½ ips.
Anti-Wow ans
Anti-Flutter Design
The speed of
the heavy-duty Pabst motor for the capstan is locked in with the power-line
frequency, assuring remarkable uniformity of capstan shaft speed rotation. The
motor is completely shielded, eliminating any stray megnetic motor flux.
Precision bearings on the drive shaft removes the lateral pressure caused by
the pinch roller and protect the motor from any uneven load.
Tape
reels Up to 10 ½" Diameter
Maximum
recording or playback time is assured through the use of reels having a
diameter of 10½". These reels
will accommodate up to 4800 feet of Lptape. Rewind can be accomplished in a few
moments. Tape tension is controlled with a simple, easily operated, readily
accessible control, which is designed so that large reels cannot be placed into
position when it is set for reduced tape tension.
Separate
VU-meters for each channel
The
VU-meters on the ReVox are precision instruments with dynamic characteristics
as required by the A.S.A. in the standard for volume measurement of complex
waves. Accurate control of recording level is possible. Scale illumination of
these meters is switched with the channel selector for added operating
convenience.
Solenoid
Operated, Oversized Brakes
The brake
bands are lifted off the linings during any operating mode. The required tape
tension is achieved electrically by counter-torque on the winding motors. This
assures minimum wear of mechanical parts. Braking is quick and positive from
fast wind, even in the event of power failure.
Mechanical
tape Stop
Because of
the very fast winding speeds used by the ReVox, the instrument does not depend
on metal contacts for stopping the recorder. A microswitch senses the end of
the tape and turns off the motor circuits automatically after a real has been
rewound. Automatic motor shutoff also takes place when a tape splice has
opened.
Bulit-in
Mixing Facilities
The mixing
arrangements provide for the one pre-amplifier not in use for recording to be
coupled with the other pre-amplifier through which the recording is being made,
with neither gain control acting as a master. Thus any two signals may be mixed
and recorded in the mono mode. The same controls are used for adjusting level
and balence when recording stereophonically. Additionally, one channel can be
set to playback while the other recording and all forms of sound-on-sound and
sound-with-sound are possible.
Separate
record and Playback - Amplifiers for both channels
The record
amplifier hs a reserve gain of 14 dB before any distortion. Through the used of
separate heads for record and play, continuous monitoring becomes possible.
Hum level
Every effort
has been made to keep hum at an absolutely minimum level. The first stages of
the amplifier have D.C. heated filaments. Teh power transformer has a grain
oriented strip-wound core providing a minimum of stray magnetic field, reducing
hum pickup.
With the use of three motors the ultimate in simplicity can be
achieved. Two motors for winding and rewinding and a third, the Capstan motor,
for smooth and even tape transport during recording and replaying. There are no
belts - other than that for the counter - no levers and no gears required for
engaging the various operating modes
A glance at the amplifier chassis revoalscomponents of the highest
quality not gonerally found in home equipment. Simple and easy to follow wiring
takes the problems out of servicing.
Tubes
In addition
to three silicon diodes and three selenium rectifiers, the ReVox uses a total
of twelve dual function tubes. Each stage has been designed for single function
operation. No simplification, with attendent tachnical compromise, has been
permitted.
Oscillator
Bias
A 70 kc
push-pull oscillator is uded for highest erase efficiency, optimum
signal-to-noise ratio and low signal distortion.
Specifications
Tape
Speeds: 7½ and 3¾ i.p.s.
Speed
Accuracy: ±0,3%
Wow
and Flutter: max. ±0,1% at 7½ i.p.s.
Tape Speed
Deviation: 0,3%, or less, from nominal
Frequency
Response:
40 to
18,000 Hz at 7½ i.p.s.
40 to
12,000 Hz at 3¾ i.p.s.
Equalization: NAB standards
Replay S/N
Ratio: better than 50 dB (referred to
peak level)
Overall
S/N Weighted: 55 dB at 7½ i.p.s. (for half-track operation)
Cross-Talk
Rejection [Mono / Stereo]: 55 dB / 45 dB
Bias
oscillator: 70 kc push-pull
Inputs per
Channel:
Microphone :
3 mV at 1 megohm input impedance, 600 mV maximum
Tuner : 50
mV at 1 megohm, 10 V maximum
Aux : 50 mV
at 47,000 ohms (diode)
Outputs:
Two
cathode-follower outputs
2-track : 0,7 V
4-track : 0,5V
Impedance: 5,000 and 100,000 ohms
Tubes and
Semiconductors:
5 x
ECC81; 1 X ECC82; 4 X ECC83;
2 X ECL86;
3 Silicon
Diodes; 3 Selenium Rectifiers
Line
Voltage: 117 V 60 Hz ( USA and Canada)
Power
Consumption: 120 watts
Case
Dimensions: 18½ x 12¼ x 11½ inches
Weight: 45 lbs approx.
Color: Gray and aluminum frame with blue-gray
plastic
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