Orban 424A - Page 3

GAIN
REDUCTION:
Reads
the gain of the VCA,
from
0
to
-
25dB.
Shows
the effect of any
control
but
OUTPUT TRIM and DE-
ESSER.
v
r
INPUT ATTEN.:
Adjusts
drive
to
compres-
sor/limiter, determining
amount of G/R.
-
ATTACK
TIME:
Adjusts speed
of response
to
input
level increase.
Fast: peak limiter
&
compressor
Slow: compressor only
*
•
UN
*
’
*
0
-SHO>«-fO-?3
0 »
-«0-l9-tO-?S
GATE
THRESH.:
Determines
the
input
level
that
causes
“gating";
VCA
gain moves
slowly to
IDLE
GAIN
control
setting.
rrrfnn
!gk\
ii 41
II
'im.’
w’
•
'w
’
Jmt
PAST
UOW
PAST
UOW
INPUT ATTfN. COMM RATfO
ATTACK TUMI
Ml
SHAPE REL. IIMI
OATfO
«—
L
•
.
l
‘
I
•
tm
<
I*
nrfrn
A
-
,’AV
i|
’W’
•
W
’
Ulf i rtMl Vat*
wrr
•
ii
i nr
n
7010793 10
•
mriTn
P/T tOW7BJ 10
'MAX
PAST UOW
DATED COMPREBBOR/LIMITER
OUTPUT TRIM:
Adjusts VCA gain to control
or prevent clipping; its ef-
fect is seen on VCA
LEVEL
meter; not an
output at-
tenuator (Output Attenuator
located on rear).
DE-ESSER OPERATE/
DEFEAT:
Activates or
defeats de-
esser control
circuitry.
|mo*m
mvy
-4 *4
#OPI«AT«
-I
(
Of M
AT
Jp.
%
OUTPUT T»IM IDII
GAIN
COMP/LIM
-I
(*1
4*
-II-
II
_
-4
4k .4
•OPltAfl
Jt- A
-W )
DEMAT
JIt.Jp.
•
OPMAH
O
MM
AT
A
ins
mow
•
oriKAii
j
y
r
Df
MAT
%
'
w
ms
OE-EBBER
COUPLED/INDEP:
Couples A and
B
gain and
gating circuits for stereo
tracking.
•
counro
0
•NO**’
%
•
ON
PIODBL
4B4A
COMPR. RATIO:
Adjusts compression
from
“looser’’
(2:1)
to
“tighter"
(°°:1).
REL.
SHAPE:
Lin:
com-
pressor
releases
at cons-
tant rate
Exp:
release
starts
slower,
then speeds up
REL.
TIME:
Adjusts speed
of gain
in-
VCA
LEVEL:
Reads
peak
operating
level
crease
when output
level
is
of VCA.
Clipping occurs
below
threshold of com-
pression.
above approximately
“
+
2
”.
IDLE
GAIN:
Determines VCA
gain
when
unit
is gated
(OPERATE
mode)
or anytime
unit is
DEFEATED.
OPERATE/DEFEAT:
Activates
or
defeats
comp/
lim
control
circuitry. Does
not bypass
any
circuitry.
DE-ESSER
SENSITIVITY:
Adjusts
threshold of de-
essing.
CAUTION
O
P
ELECTRICAL SHOCK
DO
NOT
PEWOVn
COVER. NO
USER
SERVICEABLE
PARTS INSIDE
REFER SERVICING TO
QUALIFIED
SERVICE PERSONNEL
Hi
^
WARNING
TO
REDUCE
THE RISK Of
FIRE
O*
f
LFCTUK
At SHOCK DO N» f
EXPOSE
THIS APPLIANCE TO
BAIN
OR MOISTURE
-
OR
CONTINUED
PROTECTION
AG»'N«,t
FtWE HAZARD
RfPlACf
ONLY
WITH
SAME
TYPE
FUSE
SAC,
S/S
FOR 115V
MAINS I/4A
FOR
JJOV
MAINS I/I
A
®
Sr
?
9 S 9 9 3 9 9
99999999999*9
MODEL 424A SHOWN