Wide-range attack
time
,
release
time
,
and ratio controls
permit device to
sound
extremely natural or
to
create special effects
Extremely easy to
use
because attack and release time
controls interact
and
also change
the compression threshold,
assuring consistent peak output levels
and
minimizing need for manual readjustment
of
the
output attenuator
Operation is
intuitive
and
natural
--
you don't
need
a chart or an advanced
degree to
figure
out
what's
happening
Low-distortion operation teams clean class-A VCA with all-important
dynamic
distortion reduction
in the
control circuitry
—
25dB
gain reduction
range with
constant
90dB
(typical) clip-to-noise
ratio
regardless
of
amount of
gain
reduction
Better
than
25dB de-ess gain
reduction available in addition
to
the
25db
compressor/limiter gain reduction
—
True peak-reading output level meter
allows
operator
to
positively prevent
VCA
clipping
—
or to use a
controlled amount of clipping to limit
peak
levels
—
True
peak-reading gain
reduction meter
—
Choice
of
general-purpose
linear
or
special-purpose
exponential
release
characteristics
—
Strong
all-metal
19"
rack
mount
package for
ruggedness,
roadworthiness,
RFI
shielding,
and
ease of
mounting
—
Lighted
meters
with
long-life
lamps
Input,
output,
and AC
power
RFI
suppression
make
the unit
ideal
for difficult
environments
like
broadcast
stations,
areas
near
mobile
communications
transmitters,
etc.
—
Balanced
inputs
and outputs
—
I
I5/230V
50/60Hz power
supply
standard
—
Industrial-grade
parts
and
construction
—
Highly
cost-effective
FRONT PANEL
The
Front-Panel Photograph
at the
beginning of this
Manual shows
the various
DESCRIPTION
operating
controls. These controls and their operation are
fully
described in
Description and Function
of
Front Panel Features in Part C
(Operating
Instructions) below.
REAR
PANEL
The FUSE used in both the 422A and the 424A is a I/4A
(115 volt
operation)
or
DESCRIPTION
I/8A
(230
volt
operation)
3AG 250V SLO-BLO
type. Replace with
the
same type
only.
The OUTPUT ATTENUATOR is fully
described
in Description and
Function of
Front Panel Features
in Part C (Operating Instructions)
below.
The
INPUT
and OUTPUT connectors provided
allow
connection via
barrier strip
(#5
screw). Holes are provided
for
installation of "XLR"-type connectors, and a
retrofit
kit
is
available from
your dealer.
Please
refer
to
the Electrical Installation section
for
connection instructions.
6
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