Intercom with Amplifier
The MLC Audio Out 2-pole captive screw connector outputs a -10 dBV audio signal that can be
routed to an external audio amplifier and speakers, as shown in figure 10.
1.
Cable the system as shown in figure 10.
MPA 152
IPI 201
POWER
12V
3A MAX
OUTPUT
4/8
OHMS
CLASS 2 WIRING
DO NOT GROUND
OR SHORT
SPEAKER OUTPUTS!
INPUTS
L
R
L
R
REMOTE
VOL/MUTE
10V
50mA
L
MPA 152
R
C
US
LISTED
17TT
AUDIO/VIDEO
APPARATUS
SI 3CT LP
Ceiling
Speakers
POWER
RELAY
C NO
AUDIO OUT
LAN
Figure 10.
Intercom with an Amplifier
2.
Power on the equipment.
3.
Make fine adjustments to output level using the Remote Line slider in the Advanced Settings
part of the HelpDesk software (see the
HelpDesk Software Help File
). The external amplifier
must be adjusted properly to avoid any audio signal clipping or audio distortion.
4.
If desired, use the software to adjust to minimum levels the IPI speaker output.
IPI 100 and IPI 200 Series • Installation
13