Manual-1
G4
QUAD GATE / DUCKER / EXPANDER
OPERATORS MANUAL
WEAR PARTS: is product contains no wear parts.
Quick Start
If you read just one page of a manual this year, it should be this one.
If you are not familiar with the operation of Gates, Duckers and Expanders, see the Operation section on page Manual-4 for a
good tutorial. For those of you familiar with their operation, this quick start should help you get up and going fast.
Basic Gating: e G4 allows complete Gate envelope control: reshold, Attack, Release and Hold. Side-chain metering accurately
and consistently indicates where the key signal is relative to the reshold (dBr).
A good starting procedure is as follows:
1. Select the GATE mode and set for BYPASS.
2. Select side-chain key source for INTernal or EXTernal as required.
3. Set ATTACK to 0 ms, RELEASE for 250 ms, HOLD for 125 ms and DEPTH for 20 dB.
4. Select side-chain LISTEN.
5. Listen to the key signal and adjust the LOW-CUT and HIGH-CUT lters to respond only to frequencies of interest.
6. Watch the SIDE-CHAIN meter and adjust the THRESHOLD until the yellow TH indicator lights at the desired level.
7. Set the side-chain from LISTEN to NORMAL and the BYPASS to ACTIVE.
Basic ducking: As with the gate, the G4 provides complete Ducking envelope control. Figure 5 on page Manual-6 graphs the re-
sponse. A good starting procedure is as follows:
1. Select the DUCK mode and set for BYPASS
2. Select side-chain key source for EXTernal. Ducking always uses an external side-chain key input.
3. Set ATTACK to 0 ms, RELEASE for 1 second, HOLD for 3 seconds and DEPTH for 20 dB.
4. Select side-chain LISTEN.
5. Listen to the key signal and adjust the LOW-CUT and HIGH-CUT lters to respond only to frequencies of interest.
6. Watch the SIDE-CHAIN meter and adjust the THRESHOLD until the yellow TH indicator lights at the desired level.
7. Set the side-chain from LISTEN to NORMAL and the BYPASS to ACTIVE.
Basic Expander: Expander operation is similar to that of the Gate, with two important control dierences:
• e HOLD control is not active in EXPand mode.
• e RATIO control is used in place of the DEPTH control.
1. Select the EXPand mode and set for BYPASS.
2. Select side-chain key source for INTernal or EXTernal as required.
3. Set ATTACK to 100 ms, RELEASE for 500 ms, RATIO for 3:1.
4. Select side-chain LISTEN.
5. Listen to the key signal and adjust the LOW-CUT and HIGH-CUT lters to respond only to frequencies of interest.
6. Watch the SIDE-CHAIN meter and adjust the THRESHOLD until the yellow TH indicator lights at the desired level.
7. Set the side-chain from LISTEN to NORMAL and the BYPASS to ACTIVE.
Contents
Front Panel Controls ........................................................... 2
Operation ............................................................................4
Side-chain Detector .........................................................4
Gate Mode.........................................................................4
Expand Mode .................................................................... 5
Duck Mode ........................................................................6
Kick Drum Attack Example ................................................6
msms
n:1
dB
Hz Hz
MASTER SLAVE MASTER SLAVE
Sec
QUAD GATE
612-12 -6 -3 -1 31-24
dBu
612-12 -6 -3 -1 31-24
612-12 -6 -3 -1 31-24 612-12 -6 -3 -1 31-24
-60
-20
-10-30
-40
-50 10
20
0
250
50
25 100
0
2 Sec
250
125 500
25
3
.5
.25 2
0
8
4
26
10
40
60 20
80 5k
315
80
1.25k
20 20k
2k
630
6.3k
200
msms
n:1
dB
Hz Hz
SecdBu
-60
-20
-10-30
-40
-50 10
20
0
250
50
25 100
0
2 Sec
250
125 500
25
3
.5
.25 2
0
8
4
26
10
40
60 20
80 5k
315
80
1.25k
20 20k
2k
630
6.3k
200
msms
n:1
dB
Hz Hz
SecdBu
-60
-20
-10-30
-40
-50 10
20
0
250
50
25 100
0
2 Sec
250
125 500
25
3
.5
.25 2
0
8
4
26
10
40
60 20
80 5k
315
80
1.25k
20 20k
2k
630
6.3k
200
msms
n:1
dB
Hz Hz
SecdBu
-60
-20
-10-30
-40
-50 10
20
0
250
50
25 100
0
2 Sec
250
125 500
25
3
.5
.25 2
0
8
4
26
10
40
60 20
80 5k
315
80
1.25k
20 20k
2k
630
6.3k
200
G4
ATTACK
RATIO
HOLDRELEASETHRESHOLD
LOW-CUT HIGH-CUT
12
DEPTH
34
TH
CLOSED OPEN
SIDE-CHAIN dBr
BYPASSACTIVE EXTINT LISTENNORMAL
LINK LINK
DUCK EXPGATE
SIDE-CHAIN
POWER
OL
ATTACK
RATIO
HOLDRELEASETHRESHOLD
LOW-CUT HIGH-CUTDEPTH
TH
CLOSED OPEN
SIDE-CHAIN dBr
BYPASSACTIVE EXTINT LISTENNORMAL DUCK EXPGATE
SIDE-CHAIN
OL
ATTACK
RATIO
HOLDRELEASETHRESHOLD
LOW-CUT HIGH-CUTDEPTH
TH
CLOSED OPEN
SIDE-CHAIN dBr
BYPASSACTIVE EXTINT LISTENNORMAL DUCK EXPGATE
SIDE-CHAIN
OL
ATTACK
RATIO
HOLDRELEASETHRESHOLD
LOW-CUT HIGH-CUTDEPTH
TH
CLOSED OPEN
SIDE-CHAIN dBr
BYPASSACTIVE EXTINT LISTENNORMAL DUCK EXPGATE
SIDE-CHAIN
OL
