JBL CSMA2120 Stereo Amplifier User Manual


 
26
Appendix B : Block Diagram
Figure C CSMA 2120/280/240 Block Diagram
CH2 TO AMP1
CH8 TO AMP1
CH1 TO AMP1
CH1 TO AMP2
SW1
SW2
CH2 TO AMP1
CH2 TO AMP2
SW7
SW8
CH5 TO AMP2
CH5 TO AMP1
CH3 & CH4 Similar to CH2
CH7 & CH8 Similar to CH6
Input Gain
Line
Mic
Input Gain
Line
Mic
Input Gain
Line
Mic
Input Gain
Line
Mic
CH1
CH2
CH5
CH6
Phantom Power
Mic/Line
[Bal]
Mic/Line
[Bal]
Mic/Line
[Bal]
Mic/Line
[Bal]
CH1 PTT
CH5 PTT
RCA
[MONO
SUM]
RCA
[MONO
SUM]
Gain 1
Gain 2
SPI
SPI
CH1 VOX
CH5 VOX
Gain 5
Gain 6
CH6 TO AMP2
CH6 TO AMP1
CH1 Priority
CH1 TO AMP2
CH8 TO AMP2
CH5 TO AMP2(Exclude)
(SW6)
CH1 TO AMP2
CH5 TO AMP2
(Closed as CH1 Route to AMP2)
CH5 Priority
SPI
SPI
Attenuation
Attenuation
OR
OR
OR
Tone Control
Scaling
Power
AMP1
Output
XFMR
HPF CNTL
+
-
COM
100V
70.7V
Tone Control
Scaling
Power
AMP2
Output
XFMR
HPF CNTL
+
-
COM
100V
70.7V
Preamp Line Out 1
Preamp Line Out 2
VCA 1
VCA 2
(SW5)
(SW11)
Master 1
Master 2
SPI 1Clip 1
Limiter
Limiter
SPI 2
Clip 2
Bass Treble
Bass
Treble
VCA
VCA
HPF
HPF