Siemens ZAM-180 Installation Instructions Manual page 5

Setting the Speaker Line Voltage
Speaker Line Voltage 100V
Speaker Line Voltage 70V
Speaker Line Voltage 25V
A24205-A334-B832 (Edition 1)
P/N 315-035600-2
The speaker line voltage is set with connector terminals X4, X36 and X35.
The amplifier supervision has to be configured for the appropriate line
voltage, too. Amplifier supervision is configured with jumpers on header X28.
Plug in the coded connector on connector terminal X35
and set jumper X28 position 1-2.
Plug in the coded connector on connector terminal X36
and set Jumper X28 position 2-3.
Plug in the coded connector on connector terminal X4.
There is No jumper on X28.
5
Figure 5 Jumper Position 100V
Figure 6 Jumper Position 70V
Figure 7 Jumper Position 25V