6
3. CONTROL ELEMENTS
Your ACL4 presents with four channels. Each channel is equipped with the same control elements: 3 push-button
switches, 4 rotary controls and 17 LEDs. You can operate in stereo mode via pressing the Couple switch. The details
please refer to following content.
1. Threshold Control for Compressor Section
With this control you can adjust the threshold level in the Compressor. The range is varied from -40dBu to +20dBu.
When a signal exceed the set threshold by 10dB maximum the SKC will be applied, while above such level signal
will be processed with hard knee compression.
2. Ratio Control
The ratio in between input and output level signals above the set threshold is determined by this control. When the
SKC is applied such ratio is only expressed for the signals exceeding the set threshold more than 10dB. The range
of control of the ratio varies from 1:1 to
:1.
3. Output Gain Control
You can increase or decrease the output signal by a maximum of 20dB. IN such way you can recover the level lost
during the compression process.
4. Bypass / Comp Switch
Push this switch and you will deactivate the corresponding channel. You can also use the bypass switch to make
an A/B comparison in between processed and unprocessed signal.
8
7
10
1
5
2
6
3
4
9
11
13
12
14
5. Smart Switch
A hard knee compression is turned into SKC by mean of this switch. If you wish to get a compression that is quite
inaudible use the SKC mode through the Smart switch.
6. Meter Switch for input / output
When this switch is ON the Meter will read the output level. When the switch is OFF, the Meter will read the input
level.
7. Level Meter for Input / Output
You can adjust the operating level by mean of the Operating Level Switch and choose -10dBV or +4dBu.
Consequently the Meter will be the Input or Output Level with a range from -24dB to +18dB.
8. Meter for Gain Reduction
The gain reduction will be shown by this Meter with a range of 1 to 30dB.
Pic. 1
R
LTO
POWER
OFF
ON
ACL4
QUAD
COMPRESSOR/
LIMITER
30 25 20 15 10 6 3
GAIN REDUCTION(dB)
1
INPUT / OUTPUT LEVEL(dB)
-24 -18 -12 -6 0
6 12 18
LIM
dBu
-1 0
-30
+20
+10
-40
THRE SHOLD
10
1
2
N:1
RATIO
+2.5
0
+20
+10
-10
-20
I/O METER
BYPASS
COMP
SMART
COUPLE
CH1 MASTER
DB
OUTPUT GAIN
CH1
dBu
THRE SHOLD
+18
+1 2
+4
0
OFF
30 25 20 15 10 6 3
GAIN REDUCTION(dB)
1
INPUT / OUTPUT LEVEL(dB)
-24 -18 -12 -6 0
6 12 18
LIM
dBu
-1 0
+20
+10
-40
THRE SHOLD
10
1
2
N:1
RATIO
+2.5
0
+20
+10
-10
-20
I/O METER
BYPASS
COMP
SMART
dB
OUTPUT GAIN
CH2
dBu
THRE SHOLD
+1 2
+4
0
OFF
30 25 20 15 10 6 3
GAIN REDUCTION(dB)
1
INPUT / OUTPUT LEVEL(dB)
-24 -18 -12 -6 0
6 12 18
LIM
dBu
-1 0
+20
+10
-40
THRE SHOLD
10
1
2
N:1
RATIO
+2.5
0
+20
+10
-10
-20
I/O METER
BYPASS
COMP
SMART
dB
OUTPUT GAIN
CH3
dBu
THRE SHOLD
+1 2
+4
0
OFF
+18
30 25 20 15 10 6 3
GAIN REDUCTION(dB)
1
INPUT / OUTPUT LEVEL(dB)
-24 -18 -12 -6 0
6 12 18
LIM
dBu
-1 0
+20
+10
-40
THRE SHOLD
10
1
2
N:1
RATIO
+2.5
0
+20
+10
-10
-20
I/O METER
BYPASS
COMP
SMART
dB
OUTPUT GAIN
CH4
dBu
THRE SHOLD
+1 2
+4
0
OFF
+18
-30
+18
-30
-30
COUPLE
CH3 MASTER
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR
LIMITER
LIMITER
LIMITER
LIMITER
TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1
OPERATING LEVEL
CHANNEL 4
CHANNEL 3
CHANNEL 2
CHANNEL 1
OUTPUT
INPUT
OUTPUT
INPUT
OUTPUT
INPUT
OUTPUT
INPUT
4dBu
10dBV
4dBu
10dBV
4dBu
10dBV
4dBu
10dBV
OPERATING LEVEL
OPERATING LEVEL
OPERATING LEVEL
14W
AC INPUT
95-120V /210-240V 60-50Hz
95-120V /210-240V 60-50Hz
Rated Power Consumption
FUSE:
210-240V: T315mAL 250VAC
95-120V: T630mAL 250VAC
REPLACE FUSE WITH
CORRECT TYPE ONLY
till jordat uttag nar den
ansluts till ett natverk
Apparaten skall anslutas
A101
TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1
TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1
TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1
110-120V
220-240V
2
1
3
2
1
3
2
1
3
2
1
3
