SoundPlus
™
Infrared Listening System
Quick Setup Guide
Two-Channel Configuration, WIR TX925, WIR SYS 1, WIR SYS 4
Above: Typical 2-channel configuration when using the MOD 232 Modulator, TX9 Emitter, and optional RX22-4 Receiver.
1
4
Configuration Settings
SWITCH SETTINGS
CARRIER FREQUENCY
CHANNEL A
CHANNEL ENABLE
MIX INPUTS
MICROPHONE SIMPLEX POWER
MIC/LINE INPUT
COMPRESSOR GAIN
AUTO SHUT-OFF TIMER
SEE MANUAL FOR COMPLETE DESCRIPTION OF CONFIGURATION SETTINGS
2 CHANNEL/STEREO
DO NOT SET BOTH CHANNELS
TO THE SAME FREQUENCY
TURNS CHANNEL OFF WHEN
DISABLED
15 VO LTS PER DIN 45596
LINE A LWAYS ON 1/4 INCH
MIC OR LINE ON 3 PIN
SETS MAXIMUM AVAILABLE
COMPRESSOR GAIN
TURNS CARRIER(S) OFF AFTER 15
MINUTES OF NO AUDIO
NOT AVAILABLE IN
LINE INPUT MODE
IN STEREO MODE, CHANNEL A
COMPRESSION SETTING
CONTROLS BOTH CHANNELS
AVAILABLE ON LY IN ONE
CHANNEL OPER ATION
1 2 3 4 5 6 7 8
CHANNEL B
1 2 3 4 5 6 7 8
Arrow down
indicates off
position
Arrow up
indicates on
position
ENABLED
NOT MIXED
NON-STEREO
OFF
LINE
MAXIMUM
MODERATE
DISABLED
ENABLED
MIC
ON
STEREO
MIXED
DISABLED
2.800 MHz
3.300 MHz
3.800 MHz
2.300 MHz
Figure D
The diagram below (Figure D) illustrates how to configure your system using the switch settings (Figure E) on the back of the
MOD 232 Modulator. This diagram is also printed on top of the MOD 232 Modulator for quick reference.
CH A & CH B
Configuration
Switches
Configuration
Switches
Input CH A
Input CH B
CH A
CH B
Made in USA
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Configuration Switches
Adjust switch settings on rear of MOD 232 Modulator here:
Figure E:
© 2010, Williams Sound MAN 133C
Figure A
REFER TO INSTALLATION MANUAL FOR DETAILED DESCRIPTIONS AND SET-UP PROCEDURES
MODULATOR SET-UP
• Position the MOD 232 Modulator near the sound system or mixer from which it will receive audio.
• Connect the power supply to the 3-pin Molex connector located in the back of the MOD 232. A green LED will illuminate
on the front of the MOD 232 when the power switch is in the “On” position.
• Audio connection: The MOD 232 Modulator will accept a microphone using 3-pin male connector, or a 1/4 phone plug with
a balanced or unbalanced line level signal. Connect the sound system accordingly to the audio inputs in the back of the
MOD 232 labeled “Input CHA” and “Input CHB.”
• The MOD 232 Modulator has four selectable frequencies to choose from: 2.3, 2.8, 3.3, 3.8 MHz. This system is pre-set to
2.3 and 2.8 MHz. Frequency selection can be adjusted by using the “Configuration Switches” located on the back of the
MOD 232 (see page 4).
• Prepare MOD 232 to be connected to the TX9 emitter. Determine the length of RG-58 cable needed to reach from
the emitter to the Modulator unit. Install BNC connectors to each end of the cable (see page 23 in manual).
