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INTRODUCTION
Orban Model
464A
Applications
The
flexibility
and
natural
sound of
the
Co-Operator
are ideally suited
to
recording
studio,
sound
reinforcement, broadcast,
motion
picture,
and
video
sound
applications.
The
defeatable high-frequency
limiter
can be
used
to
prevent pre-emphasized
mate-
rial
from
overloading
tape recorders, disk
cutters,
high-frequency
drivers in
sound
systems, broadcast
STLs
(studio-transmitter
links),
FM
SCAs
("subsidiary
commu-
nications authorization"),
and
for controlling
cassette
masters
which have
excessive
high-frequency
energy. Controlling high-frequency
energy
permits
average recording
or transmission
levels to
be
increased, yielding
improved
signal-to-noise
ratios.
Recording
Studios
With
the
RELEASE SHAPE
control
set to
SOFT,
the
Co-Operator
will
subtly
reduce
the
dynamic
range of an
entire
mix.
The
HARD
setting
provides
effective
gain
riding
on
single tracks,
increasing
"punch" and
intelligibility
while
retaining the basic feel
of
the
performance and
the
apparent
dynamic
range of the voice or
instrument.
The
RELEASE TIME
control
is
useful in
governing
the
uniformity of loudness
in the
final
result.
Audio
and
Video
Production
The
Co-Operator can be used
to protect
VTRs,
ATRs,
or
cart
machines from
overload
during
transfer.
On
mic
channels the Co-Operator's
smoothness and
silence-gating
guarantee uniform,
punchy
voice
quality
without noise rush-up during
pauses.
Cassette Duplication
Even
with
the
latest
advancements, such
as
"hot" tape
and
Dolby®
HX
Pro, there
are
still
some
masters
which
can cause high-frequency
saturation in cassette
dupes.
The
Co-Operator's high-frequency
limiter
can be
set to
eliminate
problems caused by
synthesizers,
cymbals,
and
sibilance,
while
still
permitting
high average modulation
on
the
cassette.
The
broadband
AGCAeveler
can be
defeated
to
permit use of
the
HF
limiter
alone
when
automatic gain
riding or
broadband peak
protection
is
not
desired.
Sound
Systems
The
Co-Operator
provides
colorless protection for
your system
—
whether
it
be
a
fixed installation
or
traveling
PA. For example,
in
an unattended bi-amped
system,
the
slow
AGC
leveler
can
efficiently
ride
gain while the
faster
compressor
protects
the
system
from
abrupt
increases in
level.
Placed
after
the
mixer and
equalizer
and
before
an
active
two-way
crossover, the
Co-Operator
will
protect
power amps
from
excessive clipping
and
high-frequency
drivers
from
thermal
overload.
Especially
with
constant-directivity
horns,
the selectable
pre-emphasis of
the
HF
Limiter
can
protect the
horn from
the
boost
that
is
required
to
compensate
for
the
constant-power high-end
roll-off.
When
horns and
drivers are located
75
feet in
the
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