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dbx 160X - 3.0 OPERATION CONTINUED; 3.4 STEREO STRAPPING; 3.5 METER CALIBRATION

dbx 160X
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160XT
OPERATING
C
ONTROLS
SLAVE
Switch
and
Indicator
Depressing
the
SLAVE
button
on
one
160XT
of
a
stereo
pair
determines
that
the
other
160XT
will
be
the
Mas¬
ter
(the
controlling
unit).
The
LED
above
the
SLAVE
button
turns
ON
when
the
160XT
is
in
Slave
mode,
indicating
that
the
front
panel
func¬
tions
(with
the
exception
of
BYPASS
and
DISPLAY
select
switches)
are
deactivated
and
under
control
of
the
Master
160XT.
When
neither
160XT
is
in
Slave
mode,
each
will
operate
normally
as
a
single
chan¬
nel
compressor/limiter.
THRESHOLD
Control
Adjusting
this
knob
sets
the
threshold
of
com¬
pression
from
-40dBu
(7.8mVrms)
to
+20dBu
(7.8Vrms).
OverEasy
Switch
Depressing
this
button
selects
the
OverEasy
com¬
pression
characteristic.
The
amber
THRESHOLD
LED
turns
ON
when
the
signal
is
in
the
OverEasy
region.
When
this
button
is
out,
the
160XT
operates
as
a
hard-knee
compressor/limiter.
In
hard-knee
compression
mode,
the
threshold
is
defined
as
that
point
above
which
the
output
level
no
longer
changes
on
a
1:1
basis
with
changes
in
the
input
level.
In
OverEasy
mode,
the
threshold
of
com¬
pression
is
defined
as
the
middle
of
the
OverEasy
threshold
region,
that
is,
“half-way”
into
compression,
as
shown
in
Figure
(See
Figure
3).
THRESHOLD
Indicators
These
three
LEDs
indicate
the
relationship
of
the
input
signal
level
to
the
threshold
of
compression.
The
green
“BE¬
LOW’
LED
is
ON
when
the
signal
is
below
threshold
and
the
red
“ABOVE”
LED
is
ON
when
the
signal
is
above
threshold.
When
the
160XT
is
switched
to
OverEasy
mode,
the
amber
LED
is
ON
when
the
signal
is
in
the
OverEasy
region
(See
Figure
3).
COMPRESSION
RATIO
Control
Rotating
this
control
clockwise
in¬
creases
the
amount
of
compression
from
1:1
(no
compression)
up
to
in¬
finity:!
(no
increase
in
output
level,
regardless
of
input
level
increases
above
threshold);
further
clockwise
rotation
increases
compression
into
the
INFINITY+
region,
up
to
a
maximum
of
—1:1
(i.e.,
a
IdB
increase
in
input
level
above
threshold
causes
a
1
dB
decrease
in
output
level).
In
the
INFINITY+
region,
the
160XT
inverts
the
program
dynamics
for
spe¬
cial
effects.
OUTPUT
GAIN
Control
Adjusting
this
control
varies
the
amount
of
fixed
gain
(up
to
±20dB)
in
the
160XT’s
output
amplifier
stage.
The
OUTPUT
GAIN
control
does
not
interact
with
the
threshold
of
compres¬
sion.
r*
5

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