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Co-Operator
TECHNICAL DATA
6-3
Audio
Processing
Circuitry
Le veler/Compressor
Attack
time: Approximately
200ms
for leveler,
5ms
for
compressor;
program-dependent.
Release
time: Adjustable
between
approximately
IdB/sec
and
5dB/sec;
program-dependent.
Below 10dB
gain
reduction, either
a constant dB/sec
release
rate
(HARD
RELEASE
SHAPE)
or
an
exponentially declining
rate
(SOFT
RELEASE
SHAPE) may
be
selected.
Compression
ratio:
>20:1
(static);
program-dependent
(dynamic).
Range
of
gain reduction: 25dB.
Interchannel
tracking:
±0.5dB
(with
MODE
button
set to
STEREO).
Total
harmonic
distortion:
<0.05%
at
1kHz
(with
RELEASE
TIME
controls
centered
and 15dB
gain
reduction). Typically
<0.1%
at
20Hz,
<0.03%
at
100-2,
000Hz,
<0.05%
at
2,000-1 0,000Hz,
and <0.1%
at
1
0,000-20.000Hz.
SMPTE
intermodulation
distortion:
<0.05%
(60/7,000Hz
4:1
with
15dB
gain
reduction).
Gain
reduction element: Class-A
proprietary
VC
A.
High-frequency
Limiter
Pre-emphasis:
Six switch-selectable
6dB/octave pre-emphasis
curves: 25,
37.5, 50, 75, 100,
and
150ps.
Can
be
strapped
for
flat
or
pre-emphasized
output.
An
defeatable
peak
clipper
can
enforce
an
absolute
peak
ceiling
on
the
(pre-emphasized)
output
of
the
HF
limiter.
Response: The
high-frequency
limiting
threshold
and
attack
time
have
been
set
so
that
no
audible
distortion
is
produced
with
dynamic program
material
that
has
been
processed by
the leveler/compressor
and peak
clipper.
Because
these
settings
have
taken
into
account
the
peak-to-average
ratio
of
the leveler/compressor's
output,
it
is
not possible to specify
the high-frequency
limiter's
response
to test
tones
with simple,
meaningful numbers.
Total
harmonic
distortion:
The
high-frequency
limiter/clipper
will
add no more
than
0.02%
THD
to
sine
wave
test
tones
that
have been processed
by
the
leveler/compressor.
Release
time: Approximately
30ms,
program-dependent.
Interchannel coupling:
Each
channel's high-frequency
limiter
operates independently
at
all
times
(the
use
of fast
release times precludes disturbances
of
the stereo
image's
stability).
Gain
reduction element:
Junction
FET.
HF
limiting
curve:
Shelving, 6dB/octave.
Warranty
One
year,
parts
and
labor: Subject
to
the
limitations
set
forth
in
Orban's Standard
Warranty Agreement.
Specifications subject
to
change
without
notice.
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