8
IR Plus Assistive Listening System
Screen Time Out
If no buttons are pressed on the IR M1 for a while, the display will shut off. Pressing any button on the front panel will re-activate
the screen.
Navigating the Front Panel
The arrow buttons (up, down, left and right) on the front panel of the IR M1 are used to navigate the front panel menu. See "Front
Panel Interface" on page 22 for how to use the arrows on each screen.
Headphone Jacks
Two headphone jacks are available on the front panel to listen to the raw audio input, one for channel A and one for channel B.
The audio sent to the headphone jacks is before the IR + system makes any adjustments to the audio, so the listener will not hear
any gain, compression or other adjustments.
Built in Emitters
Two emitters are built into the IR M1 for testing purposes. These emitters are not strong enough for sending audio to an audience,
but are suitable for testing the device when setting it up. There is an emitter for audio output channel A and a separate emitter for
channel B. Use any applicable Williams Sound receiver to test the audio. Hold the receiver within a few feet of the IR M1; the built-
in emitter coverage area is not large and is only for testing.
The built-in emitters will not work without an IR E4 emitter connected to the IR M1 with the desired audio channel enabled. For
example, if there is an active audio source on CH A and an emitter with Audio Channel A enabled, the built-in IR emitter on the
front panel will broadcast Audio Channel A on the appropriate IR Baseband Channel (see "IR Baseband Output" on page 14).
If either Audio Channel is not actively enabled on at least one IR device attached to the M1, the front panel's built-in emitter will not
transmit anything, even if an audio source is present.
Back Panel
Diagram
ETHERNET
STREAMING
AUDIO OUT
Output to Emitters
1
2
3
4
Audio Input
Two audio devices can be connected via the Line/Mic In ports. Each port is for one audio output channel. The source will need to
be set via the web interface or front panel for the IR M1 to configure the gain level for the audio source correctly.
Dante
™
(Optional)
An input for Dante audio is available on some devices.
Ethernet
The Ethernet connect is for connecting to a network and/or providing an internet connection. No emitters or other devices should
be connected to the Ethernet port.
Output to Emitters
Emitters and expansion arrays are connected to the Output to Emitter ports. There are four ports on the IR M1. These specific ports
will often be referred to as Ports throughout the website and this manual.
Although a standard Ethernet cable is used for these connections, no network information is provided through these ports. Only
approved Williams Sound devices may be connected to the Output to Emitter ports on the back of the IR M1. Use the designated
Ethernet port on the back of the IR M1 for network and internet connections.
Power
Connect the provided power supply to the power port.