4-acoustic SX-25000, Operation Manual, Page: 12 / 24

Page 12 of 24
4-acoustic
.com
1 2 3 4 5 6 7 8 9 10
MAINS IN
OUT A+B OUT B OUT C+D OUT D
D=2 2 + - / C=1 1 + - /
BRIDGE=1 2+ -/
D=1 1 + - / B=2 2 + - / A=1 1 + - /
BRIDGE=1 2+ -/ B=1 1 + - /
PIN1=GND (Ground) / PIN2=SIG+(HOT) / PIN3=SIG- (Cold) Serial Number:
CH-B IN CH-A IN CH-C IN CH-D IN
MODE
SENSITIVITY STEREO
6 5
CHC CHC
CHD CHD
ON ON
4 3
CHA CHC
CHB CHD
ON ON
2 1
ON ON
2 1
ON ON
2 1
ON ON
2 1
ON ON
2,0V 1,4V 1,0V 0,775V BRIDGE PARALLEL
CHA
10 9 8 7
CHA
CHB CHB
CHB CHB
CHC CHC
ON ON ON ON
Input Sensitivity
1 2 3 4 5 6 7 8 9 10
1 2
0,775V
1 2
1,0V
1 2
1,4V
1 2
2,0V
Bridge Mode
1 2 3 4 5 6 7 8 9 10
3 4
No Bridge Mode
3 4
Bridge CHA / CHB
3 4
Bridge CHC / CHD
3 4
Bridge CHA / CHB
MODE
SENSITIVITY STEREO
6 5
CHC CHC
CHD CHD
ON ON
4 3
CHA CHC
CHB CHD
ON ON
2 1
ON ON
2 1
ON ON
2 1
ON ON
2 1
ON ON
2,0V 1,4V 1,0V 0,775V BRIDGE PARALLEL
CHA
10 9 8 7
CHA
CHB CHB
CHB CHB
CHC CHC
ON ON ON ON
1 2 3 4 5 6 7 8 9 10
Bridge CHC / CHD
Input Mode
1 2 3 4 5 6 7 8 9 10
5 6
Input Socket CHA connected CHA
7 8 9 10
Input Socket CHB connected CHB
Input Socket CHC connected CHC
Input Socket CHD connected CHD
5 6
Input Socket CHA connected CHA
7 8 9 10
Input Socket CHA connected CHB
Input Socket CHC connected CHC
Input Socket CHD connected CHD
5 6
Input Socket CHA connected CHA
7 8 9 10
Input Socket CHA connected CHB
Input Socket CHB connected CHC
Input Socket CHD connected CHD
5 6
Input Socket CHA connected CHA
7 8 9 10
Input Socket CHA connected CHB
Input Socket CHB connected CHC
Input Socket CHC connected CHD
7.6) SX-44000, SX-46000 DIP Switch Settings
The four channel models SX-44000, SX-46000 has control options for the Input sensitivity, bridge function and the
signal input mode of the XLR input sockets CHA, CHB and CHC.
Sensitivity Switches: Selct between four different input sensitivity level with the two dip switches 1 and 2.
0,775V/1,0V/1,5V/2V
Figure 7.2 shows how to select the right setting.
The right setting and a correct system gain structure is very important to reach maximum signal headroom, less
noise and avoid clipping at any position of your sound structure. Please refer to 9.7 Setting System Gain Structure.
Input Mode: Selct between Stereo or Parallel Mode as shown in figure 7.2.
If the dip switches CHA->CHB (CHB->CHC, CHC->CHD) are set to parallel mode the signal of the input socket
CHA (CHB, CHC) will be internal linked to the Input signal for CHB (C, D)
Bridge Mode: These switches can set CHA/CHB and CHC/CHD into bridge mode.
The lowest speaker impedance of each output channel in bridge mode is 4 Ohm!
In bridge mode channel A and B or/and C and D become to one bridge mode channel with much more Power.
Please refer to the details 9.8 Bridge Mode Function.
7.) CONTROLS AND INDICATORS
Figure 7.2