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S gate 4 Front Panel Layout
1 HIGH FILTER CONTROL
- Used to set the upper fre-
quency at which the 12dB cut is applied to the side
chain input, covering a range from .1 to 10 KHz.
2 GATE OPEN & CLOSED METER
– Three segment LED
Meter indicating the GATE status. Green when Open,
Yellow when approaching threshold and Red when
closed.
3 GAIN REDUCTION METER
– Eight segment LED
meter displaying the amount of Gain Reduction when
Expander/Gate circuit is activated.
4 CHANNEL 1 IN/OUT SWITCH
– Activates S gate 4’s
Channel 1.
5 STEREO LINK SWITCH
- When engaged Channel 2
functions are controlled by the settings on Channel 1.
6 CHANNEL 2 CONTROLS
- The same knob and switch
complement as Channel 1.
POWER
0
RANG
E
ATTACK
RELEAS
E
dB
HOLD
TRIGGE
R
HIGH
LO
W
LINK
KEY LISTEN
DUCKER
IN/OU
T
IN/OUT
GAIN REDUCTION dB
30 24 1827 12
6 1 2
30
Hz
3K
.1
10
KHz
-50
+20
+4
dBu
mSec
Sec Sec
.3
300
20
.07
4
1
.25
.02
5
1
100
40
CH 1
0
RANG
E
ATTA
CK
RELEAS
E
dB
HOLD
TRIGGE
R
HIGH
LOW
KEY LISTEN
DUCKER
GAIN REDUCTION dB
30 24 1827 12 6 1 2
30
Hz
3K
.1
10
KHz
-50
+20
+4
dBu
mSec
Sec Sec
.3
300
20
.01
4
1
.25
.02
5
1
100
40
CH 2CH 2
0
RANG
E
ATTA
CK
RELEAS
E
dB
HOLD
TRIGGE
R
HIGH
LOW
LINK
KEY LISTE
N
DUCKER
IN/OUT
IN/OUT
GAIN REDUCTION dB
30 24 1827 12
6 1 2
30
Hz
3K
.1
10
KHz
-50
+2
0
+4
dBu
mSec
Sec Sec
.3
300
20
.0
7
4
1
.25
.0
2
5
1
100
40
CH 3
0
RANG
E
ATTA
CK
RELEAS
E
dB
HOLD
TRIGGE
R
HIGH
LOW
KEY LISTEN
DUCKER
GAIN REDUCTION dB
30 24 1827 12
6 1 2
30
Hz
3K
.1
10
KHz
-50
+2
0
+4
dB
u
mSec
Sec Sec
.3
300
20
.0
1
4
1
.2
5
.0
2
5
1
100
40
CH 4
KEY
KE
Y
KE
Y
KE
Y
2
12
14
15 16 17
3
9
1
19
8
2018
23
5
7
4
10
11
21
22
6
13
4 CHANNEL
EXPANDER
GATE
7 CHANNEL 3 CONTROLS
- The same knob and switch
complement as Channel 1.
8 STEREO LINK SWITCH (3 & 4)
-When engaged, chan-
nel 4 functions are controlled by the settings on chan-
nel 3.
9 CHANNEL 4 CONTROLS
- The same knob and switch
complement as Channel 1.
10
MAINS POWER SWITCH
10 MAINS POWER SWITCH10
- When turned on, activates
the S gate 4.
11
RACK EARS
- Used for mounting into a 19 inch stan-
dard rack. (One on each side.)
12 LOW FILTER CONTROL
- Used to set the lower frequency at
which the 12dB cut is applied to the side chain input, covering
a range from 30Hz to 3KHz.
13 TRIGGER
– Used to set the minimum signal level that the
Gate/ Ducker circuit begins to function in a range from –60 to
+10 dB.
Rear Panel Layout
A AC INLE
T - IEC standard AC power cable connector
with external fuse.
B CHANNEL 4, XLR LINE INPUT
- XLR Balanced line
input.
KEY
INPUT
INPUT
INPUT
INPUT
KEY
KEY
KEY
CH 1
BALANCED
OUTPUT
CH 2
BALANCED
OUTPU
T
CH 3
BALANCED
OUTPUT
CH 4
BALANCED
OUTPUT
S
.
GA
TE 4
A
B ED
C F
G H I
C CHANNEL 4, 1/4” TRS LINE INPUT
-
1/4” TRS Balanced line input.
D KEY INSERT
-The gate trigger signal can be external
processed, or an external key signal can be inserted
here.
4