Williams Sound Sound Plus WIR TX925 Troubleshooting guide

Sound Plus™Infrared Listening System
Model WIR TX925, Two-Channel Listening System
Model WIR TX900, Four-Channel Listening System
Model WIR SYS 1, Two-Channel Listening System
Model WIR SYS 2, Two-Channel Listening System
Model WIR SYS 2P, Two-Channel Listening System
Model WIR SYS 4, Four-Channel Listening System
Modulator Model MOD 232
Emitter Model WIR TX9
Optional Receiver Models WIR RX22-4, WIR RX14-2, WIR RX16
INSTALLATION GUIDE &
USER MANUAL
MAN 132D
RoHS

2
SOUNDPLUS™INFRARED LISTENING SYSTEM
INSTALLATION GUIDE AND USER MANUAL
Contents Page
SYSTEM OVERVIEW .................................................................3
INSTALLATION PROCEDURES
•MOD 232 Modulator Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Wiring & Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Features & Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
•TX9 Emitter Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Coverage Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Features & Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
•Receiver Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
•Recycling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
•Optional Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
TROUBLESHOOTING ............................................................14
WARRANTY .............................................................15
SPECIFICATIONS
•MOD 232 Modulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
•Model TX9 Emitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

3
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 affected 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.
N
No ot te e: :T Th hi is se eq qu ui ip pm me en nt th ha as sb be ee en nt te es st te ed da an nd df fo ou un nd dt to oc co om mp pl ly yw wi it th ht th he el li im mi it ts sf fo or ra aC Cl la as ss sA A
d
di ig gi it ta al ld de ev vi ic ce e, ,p pu ur rs su ua an nt tt to op pa ar rt t1 15 5o of ft th he eF FC CC CR Ru ul le es s. .T Th he es se el li im mi it ts sa ar re ed de es si ig gn ne ed dt to op pr ro ov vi id de e
r
re ea as so on na ab bl le ep pr ro ot te ec ct ti io on na ag ga ai in ns st th ha ar rm mf fu ul li in nt te er rf fe er re en nc ce ew wh he en nt th he ee eq qu ui ip pm me en nt ti is so op pe er ra at te ed di in na a
c
co om mm me er rc ci ia al le en nv vi ir ro on nm me en nt t. .T Th hi is se eq qu ui ip pm me en nt tg ge en ne er ra at te es s, ,u us se es s, ,a an nd dc ca an nr ra ad di ia at te er ra ad di io of fr re eq qu ue en nc cy y
e
en ne er rg gy ya an nd d, ,i if fn no ot ti in ns st ta al ll le ed da an nd du us se ed di in na ac cc co or rd da an nc ce ew wi it th ht th he ei in ns st tr ru uc ct ti io on nm ma an nu ua al l, ,m ma ay yc ca au us se e
h
ha ar rm mf fu ul li in nt te er rf fe er re en nc ce et to or ra ad di io oc co om mm mu un ni ic ca at ti io on ns s. .O Op pe er ra at ti io on no of ft th hi is se eq qu ui ip pm me en nt ti in na ar re es si id de en nt ti ia al l
a
ar re ea ai is sl li ik ke el ly yt to oc ca au us se eh ha ar rm mf fu ul li in nt te er rf fe er re en nc ce ei in nw wh hi ic ch hc ca as se et th he eu us se er rw wi il ll lb be er re eq qu ui ir re ed dt to oc co or rr re ec ct t
t
th he ei in nt te er rf fe er re en nc ce ea at th hi is so ow wn ne ex xp pe en ns se e. .
N
NO OT TI IC CE E: :A AP PL LA AS SM MA AM MO ON NI IT TO OR RC CA AN ND DE EG GR RA AD DE ET TH HE EA AU UD DI IO OQ QU UA AL LI IT TY YO OF FT TH HE E
S
SO OU UN ND DP PL LU US SI IN NF FR RA AR RE ED DL LI IS ST TE EN NI IN NG GS SY YS ST TE EM M. .F FO OR RB BE ES ST TP PE ER RF FO OR RM MA AN NC CE E, ,T TH HE E
S
SO OU UN ND DP PL LU US SE EM MI IT TT TE ER RS SH HO OU UL LD DB BE EP PO OS SI IT TI IO ON NE ED DA AS SF FA AR RA AW WA A
Y
YF FR RO OM MT TH HE E
P
PL LA AS SM MA AM MO ON NI IT TO OR RA AS SP PO OS SS SI IB BL LE E. .

4
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 Kits (SS-6 and SS-11) are available for portable systems.
WIRING AND CONNECTIONS
Figure 1: MOD 232 (Rear View)
W
WA AR RN NI IN NG G: :P PO OW WE ER RL LI IN NE EV VO OL LT TA AG GE EM MU US ST TN NO OT TF FA AL LL LB BE EL LO OW W9 94 4V V, ,O OR R
S
SY YS ST TE EM MP PE ER RF FO OR RM MA AN NC CE EW WI IL LL LB BE EG GR RE EA AT TL LY YR RE ED DU UC CE ED D! !
POWER CONNECTION FOR U.S. APPLICATION
Step 1: Connect the TFP 016 power supply to the 3-pin MolexTM
connector located on the rear of the MOD 232.
(See Figure 2, right.)
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.
Step 2: Plug the power supply into the AC outlet.
TFP 027-01: 230VAC, Euro Mains Plug
TFP 027-02: 230VAC, UK Mains Plug
Figure 2:
Power Connection

5
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.
Figure 3: Baseband Connection, Two Channel Operation
Figure 4: Baseband Connection, Four Channel Operation
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.
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.
IMPORTANT: Each channel must be set to a different frequency!

6
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 10uV.
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 100 V 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.
Compress Control
2:1 setting will increase
transmitted audio up to 30
bD during periods of low
level sound.
Figure 6: Features and Controls
Figure 5: Audio Connection

7
CONFIGURATION SETTINGS
Figure 8
Adjust switch settings on rear of
MOD 232 Modulator here:
Figure 8 illustrates how to configure your system using the DIP switches (Figure 7) on the back of the
MOD 232 Modulator. This diagram is also printed on top of the MOD 232 Modulator unit for quick
reference.
Figure 7: Configuration Switches
COMPRESSOR GAIN
The MOD 232’s Compressor Gain is set in “Moderate” mode from the factory. Use this setting for simultaneous
interpretation. Be sure that the compress control, located on the front of the MOD 232 (Figure 6, page 6), is turned fully
counter-clockwise. Compression can be added if desired by turning the compress control clockwise.
For hearing assistance applications, the MOD 232’s Compressor Gain can be set to “Maximum” mode. For additional
compression, use a tuning wand (PLT 005) or small screw driver and gently turn the compress control (Figure 6, page 6)
on the front of the MOD 232 clockwise.
IMPORTANT: Channel A and Channel B must be set to different frequencies!

8
Figure 10: NOTE: When pointing
the emitter, be sure to keep the
long dimension horizontal.
TX9 EMITTER SETUP
TX9 LOCATION AND PLACEMENT
To determine the best location for the TX9 Emitter, it helps to think of the IR emitter as an invisible
floodlight. You’ll want to aim it so the listeners are “flooded” with the infrared light. Mount the emitter
at least 2 ft (.61 m) above the audience.
Position the emitter to face in a slightly downward angle - that will increase the “throw” of the infrared
beam. Infrared light reflects off most surfaces and scatters, increasing the coverage area. Rough surfaces
tend to absorb infrared light, minimizing reflections, and limiting coverage to the direct illumination.
Remember: opaque objects block infrared light. Thus, emitters cannot be concealed behind opaque
walls, curtains, etc.
The emitter front red plastic lens must NOT be painted. Neither should emitters be used in areas of
extreme high or low temperature, humidity, or chemical environments.
The TX9 Infrared Emitter should not be installed where there is a lot of direct sunlight, which can create
infrared interference.
Figure 9: 3 Dimension Foot Pattern

9
COVERAGE AREA
Figure 11: Maximum Range when using the RX22-4, RX14-2, or RX16 receiver
These patterns are the direct radiation pattern. The infrared radiation does not drop to zero outside the
illustrated patterns; it decreases. It still may be useable at a greater distance, depending on the receiver
sensitivity and the reflective characteristics of the room. Reflections of the infrared light from walls,
ceilings, and floors may change these patterns.
RX22-4
RX16 RX14-2

10
Figure 12A and !2B:
Overlapping Illumination
Patterns to Cover Larger
Listening Areas
MULTIPLE EMITTERS INSTALLED TO MAXIMIZE COVERAGE
Figure 13: Connecting Multiple TX9 Emitters
An unlimited number of WIR TX9 emitters can be daisy-chained together to maximize the coverage
area. Remember that each emitter needs its own power supply and cannot share a power supply
with a modulator or another emitter.
Figure 12A
Figure 12B

11
OR
Figure 15: Mounting the TX9 to a wall, ceiling, or suspended ceiling with the BKT 024 using a
Mounting Plate or a T-Bar Clip
MOUNTING THE TX9 TO A WALL OR CEILING
Is visible on bottom
For use with mounting
bracket.
Figure 14: TX9 Emitter Rear View
TX9 FEATURES AND CONTROLS

12
RECEIVER SAFETY INFORMATION
HEARING SAFETY
This product is designed to amplify sounds to a high volume level which could
potentially cause hearing damage if used improperly. To protect your hearing and the
hearing of others:
1. Make sure the volume is turned down before putting on the earphone or headphone
before adjusting the volume to a comfortable level.
2. Set the volume level at the minimum setting that you need to hear.
3. If you experience feedback (a squealing or howling sound), reduce the volume setting
and move the microphone away from the earphone or headphone.
4. Do not allow children or other unauthorized persons to have access to this product.
BATTERY SAFETY AND DISPOSAL
This product is supplied with disposable Alkaline batteries. Do not attempt to recharge
disposable batteries, which may explode, release dangerous chemicals, cause burns, or other
serious harm to the user or product.
PACEMAKER SAFETY:
1. Before using this product with a pacemaker or other medical device, consult your
physician or the manufacturer of your pacemaker or other medical device.
2. If you have a pacemaker or other medical device, make sure that you are using this
product in accordance with safety guidelines established by your physician or the
pacemaker manufacturer.
BATTERY SAFETY AND DISPOSAL
Help Williams Sound protect the environment! Please take the time to dispose of your
equipment properly.
Product Recycling for Customers in the European Union:
Please do NOT dispose of your Williams Sound equipment in the household trash.
Please take the equipment to a electronics recycling center; OR return the product to
your Williams Sound dealer for proper disposal.
Battery Recycling for Customers in the European Union:
Please do NOT dispose of used batteries in the household trash. Please take the
batteries to a retail or community collection point for recycling.
CAUTION!
CAUTION!
CAUTION!
RECYCLING INSTRUCTIONS
10/01/07

13
Figure 16: WIR RX16 UNDER-THE-CHIN RECEIVER
OPTIONAL RECEIVERS
Channel Frequency
1 2.3 MHz
22.8 MHz
3 3.3 MHz
4 3.8 MHz
Figure 16: FOUR CHANNEL RECEIVER, MODEL WIR RX22-4
Figure 17: WIR RX14-2 HEADSET RECEIVER
WIR RX16 Front View

14
TROUBLE SHOOTING
NEITHER TX9 INDICATOR LIGHT ISON.
þMake sure the transformer is plugged into the emitter and any remote power switch is on.
þMake sure the electrical outlet is on.
þMake sure the 24 VAC power supply is working.
ONLY TX9’SPOWER INDICATOR LED COMES ON.
þMake sure the MOD 232 is on.
þMake sure the baseband cable is connected properly. See Figures 3 & 4.
þCheck to see if the carrier light on the MOD 232 is on.
þMake sure an audio signal is being sent to the MOD 232.
NOSOUND THROUGH RECEIVERS.
þIf some of the receivers work but others don’t, check for bad batteries or earphones on the
receivers that aren’t working.
þIf none of the receivers work, check to see if the power and baseband cable are connected to the
emitter and that the TX9 Power and Baseband Present Indicator lights are ON.
þCheck to see if the modulator is connected properly to the sound system. The Frequency
Indicator should be lit and there should be activity on the MOD 232 Level Indicators.
þMake sure the “eye” is not covered up on the receiver. There must be clear line of sight between
the receiver eye and the emitter panel.
SOUND THROUGH THE RECEIVERS ISWEAK AND NOISY.
þMake sure each channel is set to a different frequency on the MOD 232 modulator. Listen to the
audio signal through the Phones jack of the MOD 232 modulator. You can also hold a receiver in
front of the Infrared Test LED on the front of the MOD 232 modulator and listen to the audio
signal. If the signal is weak and noisy here, check the Input Level switch and Input Level
Control settings. Increase the input signal level from the sound system by turning up the mixer
control. If the signal sounds okay, you may need to re-position the emitter panels or add
additional panels.
NOTE: Make sure the powerline voltage does not fall below 94V, or system performance will be
greatly reduced!
BUZZING ORHUMMING NOISE INSOUND SYSTEM.
þCheck for ground loops or noise on the input signal. Call your Authorized Williams Sound
dealer or representative.

15
LIMITED WARRANTY
Williams Sound products are engineered, designed, and manufactured under carefully controlled conditions to
provide you with many years of reliable service. Williams Sound warrants the SoundPlus™Infrared Listening
System against defects in materials and workmanship for FIVE (5) years. During the first five years from the
purchase date, we will promptly repair or replace the SoundPlus™Infrared Listening System.
Microphones, earphones, headphones, batteries, cables, carry cases, and all other accessory products carry a 90-
day warranty. Chargers carry a one year warranty.
WILLIAMS SOUND HAS NO CONTROL OVER THE CONDITIONS UNDER WHICH THIS PRODUCT IS
USED. WILLIAMS SOUND, THEREFORE, DISCLAIMS ALL WARRANTIES NOT SET FORTH ABOVE,
BOTH EXPRESS AND IMPLIED, WITH RESPECT TO THE SOUNDPLUS™INFRARED LISTENING
SYSTEM, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. WILLIAMS SOUND SHALL NOT BE LIABLE TO ANY
PERSON OR ENTITY FOR ANY MEDICAL EXPENSES OR ANY DIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES CAUSED BY ANY USE, DEFECT, FAILURE OR MALFUNCTIONING OF
THE PRODUCT, WHETHER A CLAIM FOR SUCH DAMAGES IS BASED UPON WARRANTY,
CONTRACT, TORT OR OTHERWISE. THE SOLE REMEDY FOR ANY DEFECT, FAILURE OR
MALFUNCTION OF THE PRODUCT IS REPLACEMENT OF THE PRODUCT. NO PERSON HAS ANY
AUTHORITY TO BIND WILLIAMS SOUND TO ANY REPRESENTATION OR WARRANTY WITH
RESPECT TO THE SOUNDPLUS™INFRARED LISTENING SYSTEM. UNAUTHORIZED REPAIRS OR
MODIFICATIONS WILL VOID THE WARRANTY.
The exclusions and limitations set out above are not intended to, and should not be construed so as to contravene
mandatory provisions of applicable law. If any part or term of this Disclaimer of Warranty is held to be illegal,
unenforceable, or in conflict with applicable law by a court of competent jurisdiction, the validity of the remaining
portions of this Disclaimer of Warranty shall not be affected, and all rights and obligations shall be construed and
enforced as if this Limited Warranty did not contain the particular part or term held to be invalid.
If you experience difficulty with your system, call Toll-Free for customer Assistance:
1-800-843-3544 (U.S.A.) or [phone] (Outside the U.S.A.)
If it is necessary to return the system for service, your Customer Service Representative will give you a Return
Authorization Number (RA) and shipping instruction.
Pack the system carefully and send it to:
Williams Sound Corp.
Attn: Repair Dept.
10321 West 70th Street
Eden Prairie, MN 55344 USA
Your warranty becomes effective the date you purchase your system. Your returned warranty card is our way of
knowing when you warranty begins. Please take a moment to fill it out and mail the enclosed card. You may also
register your product online: www.williamssound.com/registration.aspx. This information will help us serve you
better in the future. Thank you!

1616
SOUNDPLUS™INFRARED LISTENING SYSTEM SPECIFICATIONS
MODELS WIR TX900, WIR TX925, WIR SYS 1, WIR SYS 2, WIR SYS 2P, WIR SYS 4
Two-Channel Modulator, Model MOD 232
Size, Weight: 8.5” W x 8.2” D x 1.7” H (21.5 cm x 20.8 cm x 4.4 cm), 3.1lbs. (1.5 kg)
Color: Black epoxy paint with white legends
Rack Mount: 1/2 rack space wide, 1 rack space high, one or two modulators may be mounted in a
single IEC rack space with RPK 005 (single) or RPK 006 (double) Rack Mount Kits
Power Supply: Wall Transformer, 24VAC, 50-60 Hz, 15VA
North America: TFP 016, UL/CSA
Europe: TFP 027-01, 2-pin Schuko plug, CE
UK: TFP 027-02, 3-pin UK plug, CE
Modulation: FM Wideband, +50kHz deviation, 50uS pre-emphasis
Carrier Frequency: Channel A: Selectable, 2.3/2.8/3.3/3.8MHz,
Channel B: Selectable, 2.3/2.8/3.3/3.8MHz
Signal to Noise Ratio: More than 60dB
Frequency Response: 30 to 16,000Hz, +1 dB, -3dB, electrical response
Total Harmonic Distortion: Less than 2%, electrical response
Audio Processing: Compression (slope) adjustable from 1:1 to 2:1
Switchable compression gain: Moderate: 16dB. Max: 33dB
Auto Carrier Shut-Off: 15 minute timer shuts off carrier when no audio is present (can be disabled)
Power Switch: Two-position push button, ON/OFF
Power Indicator: Green LED
Audio Level Controls: CHA and CHB Input Level, rotary knobs
Audio Indicators: CHA and CHB Audio Level, 10-segment LED’s
Carrier LEDs: 4 green LED carrier “on” indicators per channel (indicates frequency, malfunctions)
Compress Control: 1:1 or 2.0:1
Input Mix LED: Indicates inputs A and B audio are mixed and transmitted by CHA. CHB off
Stereo LED: Indicates stereo mode
Phones Switch: Selects CH1 or CH2 for phones when not in stereo mode
Phones Output: 1/4” TRS headphone jack. Accepts stereo, mono, and any impedance phones.
Infrared Test LED: IR LED for receiver testing, monitoring, and audio signal testing.
Power Input: 3-Pin Molex, 24VAC, 50-60Hz, 15 VA
Audio Input Jack: CHA and CHB combination XLR/TRS jack
Mic Level: Balanced, Lo-Z, 100µV min. to 90 mV max., 1mV nominal, 3kΩ input impedance,
supplies switchable simplex power per DIN 45596 for condenser mics
Line Level: Balanced or unbalanced, 21mV min. to 10V max., 212mV nominal, 100kΩ
Audio Line Output Jacks: RCA Jack, CHA and CHB, 500mV, unbalanced, 100Ω source impedance, load
impedance must be greater than1kΩ
Configuration Switches: CHA and CHB 8-position DIP switch, selects Mic/Line input, compressor gain, simplex
power, discrete or mixed inputs, carrier frequency, channel disable, auto shut-off timer.
Baseband Input Jack: BNC, allows mixing with additional MOD 232 Modulator (4CH operation), 100mV,
50Ω input impedance, use with MOD 232, BNC, RG-58 Cable
Baseband Output Jack: Two BNC jacks carry baseband signal, 100mV/channel, 50Ω source impedance, for use
with WIR TX9 or MOD 232 only
Approvals: CE, FCC, RoHS, WEEE
Operating requirements: 0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
Warranty: 5 years on Modulator, 90 days on accessories
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.

17
Multi–Channel Infrared Emitter, Model TX9
Dimensions, Weight: 11.25” W x 6.25” H x 2.125” D (28.6 cm x 15.9 cm x 5.4 cm), 1.9lbs (0.9 kg)
Color: Black with white legends, red acrylic lens
Power Supply: Wall Transformer, 24VAC, 50-60Hz, 35VA, 3-pin MOLEX Connector
North America: TFP 010, UL/CSA
Europe: TFP 027-01, 2-pin Schuko plug, CE
UK: TFP 027-02, 3-pin UK plug, CE
Note: Each WIR TX9 requires its own power supply
Power Cable: NEC Class 2 wiring, two-conductor, 18 ga., 200’ (61m) max. length
Indicators: Green LED power indicator, red LED baseband indicator
Carrier Frequency: 50 kHz to 8 MHz
Emitter IR Power: 3.5 watts
Coverage Area: 28,000 ft2(2,600 m2)in single-channel mode when using the RX22-4 Receiver
11,000 ft2(1,000 m2) in four-channel mode when using the RX22-4 Receiver
3,500 ft2(325 m2) in single channel mode when using the RX14-2 Receiver
3,063 ft2(285 m2)in single channel mode when using the RX16 Receiver
(See coverage area diagrams)
Baseband Input: BNC, 100 mV per carrier, 50Ω, for use with WIR TX9 or MOD 232 only
Baseband Output: BNC, 50Ω, for use with TX9 only
Baseband Cable: RG 58 Coax, BNC connectors, maximum 1000’ (300m) length
Operating Requirements: 0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
Mounting Kits: Wall or Ceiling Mount: BKT 024 Omnidirectional mount, Mic Stand Kit: SS-11 or SS-6
Warranty: 5 years on Emitter, 90 days on accessories
Approvals: CE, FCC, RoHS, WEEE
Compatible Receivers: WIR RX22-4 Four Channel Receiver, WIR RX14-2 Two Channel Receiver, RX16 Two-
Channel Receiver
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
Visit our website for the latest specifications and publications: www.williamssound.com

© 2009, Williams Sound Corp. MAN 132D