SmartSMS User Manual
Soft dB inc.
User Manual
p. 20
Note that turning a tap down one notch will not necessarily result in a 3 dB reduction below because
of other speakers’ contribution.
4.2.2 Wiring:
The SmartSMS amplifier is a constant voltage 25 Volt amplifier unit. The wiring of the loudspeaker
network is very simple. All the loudspeakers in one specific zone are wired in parallel, using a single
2-conductor wire for each zone. Any number of loudspeakers can be installed on a line, up to a
maximum of 32 for the 2W tap.
Figure 12 : Connection of SMS-STR loudspeakers
Figure 13 : A typical electrical connection zone
