SoundPlus®
Infrared Listening System
Installation Guide and User Manual
TX9 EMITTER
MOD 232 MODULATOR
MAN 132I
SoundPlus® Infrared Listening System
Contents
System Overview ......................................................................................................................................................................... 3
MOD 232 Modulator Setup ....................................................................................................................................................... 4
Determine Location .......................................................................................................................................................................... 4
Wiring and Connections ................................................................................................................................................................... 4
Power Connection for U.S. Application ....................................................................................................................................... 4
For Applications Outside The U.S. Requiring 240 VAC Mains Supply: ............................................................................. 4
Baseband Cable Connection .........................................................................................................................................................5
Audio Connection ...............................................................................................................................................................................6
Features and Controls ......................................................................................................................................................................6
Configuration Settings ...................................................................................................................................................................... 7
TX9 Emitter Setup ....................................................................................................................................................................... 8
TX9 Location and Placement .........................................................................................................................................................8
Coverage Area .............................................................................................................................................................................9
Multiple Emitters Installed to Maximize Coverage ..................................................................................................................10
Compressor Gain ................................................................................................................................................................................ 11
TX9 Features and Controls ..................................................................................................................................................... 12
Mounting the TX9 ..............................................................................................................................................................................12
Receiver Safety Information .................................................................................................................................................... 13
Recycling Instructions ............................................................................................................................................................... 13
Infrared Receivers ..................................................................................................................................................................... 14
Trouble Shooting ....................................................................................................................................................................... 15
TX9 Indicator Light Is Not On. .......................................................................................................................................................15
Only TX9’s Power Indicator LED Comes On. ...........................................................................................................................15
No Sound Through Receivers. ......................................................................................................................................................15
Sound Through The Receivers Is Weak And Noisy. ..............................................................................................................15
Buzzing Or Humming Noise In Sound System. .......................................................................................................................15
SoundPlus® Infrared Listening System Specifications ....................................................................................................... 16
Two-Channel Modulator, Model MOD 232 ...............................................................................................................................16
SoundPlus® Infrared Listening System Specifications ........................................................................................................17
Multi–Channel Infrared Emitter, Model TX9 .............................................................................................................................. 17
Limited Warranty ........................................................................................................................................................................ 18
2
SoundPlus® Infrared Listening System
System Overview
The Williams Sound SoundPlus® Infrared Listening System consists of a MOD 232 Modulator(s) and one or more TX9
Emitters which use invisible infrared (IR) light to broadcast speech or music to wireless infrared receivers.
The system is designed to transmit high quality audio for hearing assistance and language translation applications.
Because the system uses infrared light for transmission, it is not aected by interference from radio equipment and
does not interfere with radio equipment. No FCC license or radio approval is required.
The system can be used with microphones as a stand-alone system, or can be connected to other sound equipment.
Infrared systems generally cannot be used in direct sunlight because of sunlight’s large amount of interfering infrared
light.
Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference at his own
expense.
NOTICE: A plasma monitor can degrade the audio quality of the SoundPlus® Infrared Listening System.
3
SoundPlus® Infrared Listening System
A255
BASEBAND OUTPUT
ANOTHER SOUND SYSTEM.
CONFIGURATION SWITCHES
CONTROLS CHANNEL SELECTION,
COMPRESSOR GAIN, MIC/LINE
INPUT, CHANNEL ON/OFF, AND
OTHER CONTROLS.
BASEBAND INPUT
POWER
SUPPLY
MOD 232 Modulator Setup
Determine Location
The modulator is usually located with the sound system amplifier or mixer for easy access to an audio input signal.
For portable systems, the modulator can be placed near the emitter or in another convenient location. Infrared Stand
Kit SS-6 is available for portable systems.
Wiring and Connections
Figure 1: MOD 232 (Rear View)
A SECOND MODULATOR
MAY BE CONNECTED
HERE FOR 4 (FOUR)
CHANNEL OPERATION.
INPUT CH A CH B
ACCEPTS ANY LOW
IMPEDANCE MICROPHONE
OR LINE LEVEL SIGNAL.
AUDIO LINE OUTPUT
RCA JACK FOR MONITORING,
RECORDING, OR ROUTING
PROCESSED AUDIO TO
WARNING: POWERLINE VOLTAGE MUST NOT FALL BELOW 94V, OR SYSTEM
PERFORMANCE WILL BE GREATLY REDUCED!
Power Connection for U.S. Application
1. Connect the TFP 016 power supply to the 3-pin Molex connector located on the
rear of the MOD 232. (See Figure 2, right.)
SENDS INDIVIDUAL
AND/OR COMBINED
CARRIER FREQUENCIES
OF 2.3, 2.8, 3.3, 3.8 MHz
TO A TX9 EMITTER.
POWER IN
24 VAC, 50-60Hz
120 VAC (US); TFP 016 POWER SUPPLY
230 VAC (CE); TFP 027 POWER SUPPLY
Figure 2: Power Connection
For Applications Outside The U.S. Requiring 240 VAC Mains Supply:
Use the transformer power supply, model TFP 027.
Secondary specifications: 24 VAC, 35 VA, 50/60 Hz.
2. Plug the power supply into the AC outlet.
4
SoundPlus® Infrared Listening System
SECOND WIR TX9 EMITTER (OPTIONAL)
A248
WIR TX9 EMITTER (REAR)
MOD 232 MODULATOR #2 (REAR)MOD 232 MODULATOR #1 (REAR)
A249
Baseband Cable Connection
The MOD 232 can directly drive one or two emitters. TX9 emitters repeat the baseband signal, so any number of
emitters can be used. The modulator outputs CANNOT be split with CATV splitters.
Determine the length of RG-58 cable needed to reach from the TX9 Emitter to the Modulator unit. Install BNC
connectors to each end of the cable.
For two-channel operation, only one MOD 232 is required: Connect the coaxial cable to one of the Baseband Output
jacks on the rear of the MOD 232. The other end of the coaxial cable connects to the Baseband Input jack of the TX9
Emitter. See Figure 3 below.
Figure 3: Baseband Connection, Two Channel Operation
Multi-Channel Infrared Transmitter
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR
Class 1
ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE.
LED Product
Note: It is normal for this unit to feel warm while it is in operation.
Power Supply Wiring:
Use NEC, Class 2 Wiring, 18 ga. minimum,
200 ft. (70m) maximum length (18 ga.)
Baseband Signal Wiring:
Use RG58 Coax,1000 ft. (350m) max. length
Williams Sound, Minneapolis, Minnesota, USA
Patent Pending
24 VACNC
Power In:
24VAC
~
Plug
50-60Hz
35VA
RoHS
Mounting
Bracket
Made in U.S.A.
Power On Baseband On
www.williamssound.com
Baseband Signal Wiring:
Use 50 Ohm Coaxial Cable (RG58)
Baseband
(Modulation)
InOut Out
MOD 232 MODULATOR (REAR)
50 Ohms
BASEBAND
OUTPUT
BASEBAND
OUTPUT
Multi-Channel Infrared Transmitter
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR
Class 1
ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE.
LED Product
Note: It is normal for this unit to feel warm while it is in operation.
Power Supply Wiring:
Use NEC, Class 2 Wiring, 18 ga. minimum,
200 ft. (70m) maximum length (18 ga.)
Baseband Signal Wiring:
Use RG58 Coax,1000 ft. (350m) max. length
Williams Sound, Minneapolis, Minnesota, USA
Patent Pending
24 VACNC
Power In:
24VAC
~
Plug
50-60Hz
35VA
RoHS
Mounting
Bracket
Made in U.S.A.
Power On Baseband On
www.williamssound.com
Baseband Signal Wiring:
Use 50 Ohm Coaxial Cable (RG58)
TX9 BASEBAND INPUT TX9 BASEBAND INPUT
Connect to the TX9 using RG-58 cable and BNC connectors. The MOD 232 has two baseband output jacks to
simplify connections when multiple emitters are used.
To setup a system for four-channel operation, two MOD 232 Modulators are required. Link the two Modulator units
together as shown in Figure 4. Connect the baseband output from the second modulator in the chain to the TX9
emitter(s) baseband input connector.
Figure 4: Baseband Connection, Four Channel Operation
Baseband
(Modulation)
InOut Out
50 Ohms
BASEBAND
OUTPUT
COAXIAL CABLE (WCA 068) TX9 BASEBAND INPUT
IMPORTANT: Each channel must be set to a dierent frequency!
BASEBAND
INPUT
BASEBAND
OUTPUT
5
SoundPlus® Infrared Listening System
BALANCED LINE USING 3–PIN CONNECTOR
IN PHASE
UNBALANCED LINE USING 3–PIN CONNECTOR
BALANCED LINE USING 1/4" CONNECTOR
IN PHASE
UNBALANCED LINE USING 1/4" CONNECTOR
A254
COMPRESS CONTROL
INPUTS MIXED
STEREO LED
AUDIO LEVEL
CONTROLS
A OR B STEREO AUDIO
CARRIER (CXR) LEDs
Audio Connection
Microphone Input:
With the modulator DIP switches set for microphone input, the 3-pin XLR jack accepts balanced microphones. Power
for condenser microphones can be selected by DIP switch. The minimum input level is 100uV and the maximum level
is 90 mV.
XLR Line-Level Input:
With the modulator DIP switches set for line-level input, the 3-pin XLR jack accepts balanced line-level audio inputs.
The minimum input level is 21mV and the maximum level is 10V.
1/4" TRS Line-Level Input:
The 1/4" Tip/Ring/Sleeve (TRS) jack can accept only a balanced or unbalanced line-level input. A 25 V, 70 V, or 100V
speaker line can be connected to the balanced line input using an appropriate attenuator. “T” pads made with
resistors yield better fidelity than speaker matching transformers.
Figure 5: Audio Connection
Features and Controls
Figure 6: Features and Controls (MOD 232 Rear)
3 PIN CONNECTOR
INDICATES SELECTED
FREQUENCY, FLASHES
TO INDICATE A FAULT.
1 2
3
2:1 SETTING WILL
INCREASE TRANSMITTED
AUDIO UP TO 30 dB
DURING PERIODS OF
LOW LEVEL SOUND.
3 PIN CONNECTOR
INDICATES CHANNEL
A AND CHANNEL B
ARE MIXED AND
TRANSMITTED
BY CHANNEL A.
CHANNEL B IS OFF.
1 2
3
INDICATES
STEREO MODE.
POWER SWITCH
TURNS THE MODULATOR
ON AND OFF. THE WALL
MOUNTED POWER SUPPLY
STAYS ON AT ALL TIMES.
POWER ON
INDICATOR
6
LEVEL INDICATORS
INDICATOR SHOWS
AUDIO LEVEL IN 3dB
INCREMENTS.
IR LED
FOR TESTING
RECEIVERS.
PHONE SWITCH
SELECTS CHANNEL
A OR B AUDIO
WHEN NOT IN
STEREO MODE.
PHONE JACK
1/4” PHONE JACK.
MONITORS CHANNEL
DEPENDING ON
POSITION OF PHONE
JACK SWITCH, AND
MODE OF OPERATION.
Loading...