17
3.2 70/100V Switch
When this switch is in the “OFF” position, the amplier is congured to drive low
impedance speakers, (4 Ohms ,minimum) The Hi-Z switch will switch in the built-in
output transformer allowing the unit to drive 70V or 100V speaker systems directly
when connected to the appropriate output terminals. As an added feature when
driving the high impedance speakers, the system automatically switches in a 70Hz
high pass lter.
3.3 Remote Control Capability
Remote volume control can be implemented using a CSR-V controller connected
via an Ethernet cable to the RJ45 connector on the back panel. For the CSA 2300Z,
there are two connectors, one for each amplier output.
Additional features are remotely accessible through the RJ45 port using serial
control. (For the CSA 2300Z, where there are two RJ45 connectors, the serial control
feature is accessible via the Channel 1 connector only.)
Please see Appendix B for more details regarding remote operation using RS232.
Pin Function Usage
1 +Vref CSR-V
2 Vol Ctrl CSR-V
3 NC none
4 Gnd Serial
5 Rx Serial
6 Tx Serial
7 NC none
8 Gnd CSR-V
Pin Function Usage
1 +Vref CSR-V
2 Vol Ctrl CSR-V
3 NC none
4 NC none
5 NC none
6 NC none
7 NC none
8 Gnd none
CSA1300Z & CH1 of CSA2300Z CH2 of CSA 2300Z
Figure 3.3 Wiring Audio System
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