Pub. 42004-554A
E3 Speaker Master and Remote Modules Page 5 of 6
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Operation
The speaker master module communicates with an E3 controller over a CAN bus interface on Category 5
or better cable. It transmits output speaker power level tap settings and page group control commands to
speaker remote modules to control broadcast locations and speaker volume levels. The speaker master
module receives acknowledgment messages and speaker integrity messages from the speaker remote
modules.
The speaker master module has four channels and transmits and receives RF communication at 245 kHz.
Each channel connects to the line output of an associated paging zone power amplifier.
Speaker Status
The E3 controller (when no audio is coming in) at the scheduled time (once per day or on demand)
generates a 35-Hz signal to power the speaker remotes. The speaker master module receives the signal
from the E3 controller to obtain status from the speaker remotes and set the speaker taps to the configured
values. The speaker master returns health status to the E3 controller. This process repeats until all
speaker remotes report their status. The E3 controller removes the 35-Hz signal and normal operation
continues.
Speaker Remote Module
Speaker remote modules receive the 35-Hz signal from the speaker master to perform a speaker coil
health check by monitoring the current into the loudspeaker. The transmission of acknowledgments and
data back to the speaker master module occurs on command from the master module.
The speaker remote module provides both high and low output power settings. Set the high/low power
setting using jumper P6. Configure the tap settings with the Elemec Console3 software package based on
the jumper setting:
The speaker audio output power corresponds to the position of jumper P6 on the speaker remote
module and the volume level selected in the E3 Console:
Table 1. Speaker Audio Output Power
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