11
Chapter 3
Setting up the system
ATTENTION
Make sure the power of the device is turned OFF before any connections or wiring
adjustments are made. Disregarding this rule can lead to permanent damage of the
equipment.
1) Connecting the loudspeakers
The loudspeakers should be connected to the 4-pin terminal block connector on the rear
panel of the amplifier. Selection can be made between low impedance (4
Ω
) or constant
voltage (100V / 70V) depending on project requirements. The corresponding terminals shall
be connected depending of the loudspeakers and installation type. It is only allowed to use
one (either constant voltage or low impedance) of both options at a time.
The table below shows the output voltage, impedance and maximum power load for each
amplifier model.
COM104
COM108
4
Ω
/ 12.65 V
4
Ω
/ 17.89 V
125
Ω
/ 70 V
62.5
Ω
/ 70 V
250
Ω
/ 100 V
125
Ω
/ 100 V
40 Watt
80 Watt
For operation in low impedance (4 ohm) mode, any loudspeaker (or combination) with an
impedance higher than 4
Ω
can be connected.
4 Ω
8 Ω
8 Ω
OR
Example diagram low impedance connections
For operating using constant voltage (100V / 70V ) audio distribution systems, all speakers
shall be connected in parallel on the corresponding output terminals, non exceeding the
maximum wattage / minimum impedance of the amplifier.
