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WIR TX75 PRO Infrared Transmitter

Servicing or attempting to service this device will void the warranty

Refer servicing to qualified personnel. Servicing is required when the system has been damaged in any way: if liquid has been 

spilled or objects have fallen into the unit, if the unit has been exposed to moisture, if the unit does not operate normally, or if the 

unit has been dropped.
Do not block any ventilation openings. Install in accordance with manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produces heat.
Use only attachments/accessories specified by the manufacturer.
Unplug the transmitter during lightning storms or when unused for long periods of time.
Be advised that different operating voltages require the use of different types of line cord and attachment plugs. Check the voltage 

in your area and use the correct type.
Use only the power supply provided by Williams Sound. Other power supplies may have similar specifications, but may not 

be equivalent in emissions ratings, in-rush current, etc. Use of an unapproved power supply may leave the device partially or 

completely inoperable, and will void the warranty.
This apparatus has been designed with class-1 construction and must be connected to a main socket outlet with a protective 

ground connection (the third grounding prong).
Protect the power cord from being walked on or pinched, particularly at plugs, receptacles, and near the power jack on the 

transmitter.
This apparatus must be grounded.
The MAINS plug or an appliance coupler is used as the disconnect device, so the disconnect device should remain readily 

operable.

for Customers in The United States

WARNING: Use a three-wire grounding-type line cord as is supplied with the product. Do not defeat the safety 

purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A 

grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for 

your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete 

outlet. This equipment has been tested and found to comply with the limits for Class B digital device, pursuant to part 

15 of the FCC rules.

for Customers in Canada

This Class B digital device meets all requirements of the Canadian Interference-causing Equipment Regulations. 
Cet appareil numérique de la classe B respecte toutes les exigencies du Règlement sur le matériel brouilleur du Canada.

Recycling Instructions

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. Take the equipment to a electronics 

recycling center, or return the product to the factory for proper disposal.

Summary of Contents for WIR TX75 PRO

Page 1: ...WIR TX75 PRO Infrared Transmitter 2 3 2 8 3 3 3 8 MHz MAN 166E USER Manual ...

Page 2: ...Coverage Area 6 Optional WIR TX75 S Slave Emitter for Additional Coverage 7 Control Panel 9 Connect Power 10 Connect Audio Source 10 Adjust the Audio Level 10 Connecting Master and Slave Units 11 WIR TX75 PRO Indicators 12 Mounting Options 12 Accessories 12 Troubleshooting 13 Optional Receivers 14 Limited Warranty 15 PRO Infrared Transmitter Specifications Model WIR TX75c WIR TX75d Master 16 Infra...

Page 3: ...uct Battery Safety and Disposal CAUTION Williams Sound receivers are supplied with non rechargeable alkaline batteries Do not attempt to recharge non rechargeable batteries they may explode release dangerous chemicals cause burns or cause other serious harm to the user or product Pacemaker Safety CAUTION If you have a pacemaker or other medical device make sure that you are using the Williams Soun...

Page 4: ...rd grounding prong Protect the power cord from being walked on or pinched particularly at plugs receptacles and near the power jack on the transmitter This apparatus must be grounded The MAINS plug or an appliance coupler is used as the disconnect device so the disconnect device should remain readily operable For Customers in The United States WARNING Use a three wire grounding type line cord as i...

Page 5: ... emitters can be added for additional coverage Power baseband and digital data are fed to the slave emitters via a single CAT 5e cable for each emitter No additional cables are required No FCC license or radio approval is required with this equipment It can be used anywhere in the world NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to...

Page 6: ... concealed behind walls glass curtains etc 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 patte...

Page 7: ...nd and digital data bus are fed via CAT 5e cable to each TX75 S slave Figure 2 overlapping illumination patterns to cover larger listening areas A158 Figure 3 coverage area with second emitter added to same emission point 50 increase 0 10 20 30 40 50 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 A156 230 FEET MASTER ONLY MASTER SLAVE Figure 5 WIR TX75 PRO master ...

Page 8: ...ANNEL SELECTOR TX75 BUS OUT TO SLAVE 1 TX75 BUS OUT TO SLAVE 2 MIC IN CH 1 AUDIO LEVEL INDICATOR YELLOW CH 2 AUDIO LEVEL INDICATOR YELLOW SLAVE TRANSMIT POWER INDICATOR YELLOW SLAVE POWER INDICATOR GREEN INDICATOR LIGHTS ON OFF MIC ADJUSTMENT POWER INDICATOR 3 3 TX 75d 3 8 2 3 TX 75c 2 8 SLAVE TRANSM STATUS INDICATOR YELLOW PHOENIX INPUTS ...

Page 9: ...ion Shutdown The WIR TX75c offers two carrier frequencies Ch 1 2 3 MHz and Ch 2 2 8 MHz The WIR TX75d offers two carrier frequencies Ch 1 3 3 MHz and Ch 2 3 8 MHz Either unit automatically detects the presence of audio on the microphone and phoenix audio inputs and transmits on either both channels when an audio signal is present on that channel If audio is present on both the microphone and phoen...

Page 10: ...that channel blinks periodically Microphone Source Speak into the microphone from a normal distance and at a natural voice level Use the microphone gain adjustment on the TX75 to set the gain to the point where the audio level indicator on the selected channel blinks periodically If the audio level indicator is always on or on most of the time the level is too high If the audio level indicator is ...

Page 11: ...STER TX75 S SLAVE 1 OPTIONAL AUDIO SOURCE MICROPHONE ELECTRET AC POWER SOURCE TX75 S SLAVE 2 OPTIONAL A508 Troubleshooting For easier troubleshooting the TX75 units are equipped with a series of self tests and indications Please see WIR TX75 PRO indicator lights table on page 12 to aid in troubleshooting The WIR TX75 PRO Power Indicator is not lit Make sure the power supply is plugged into the tra...

Page 12: ... unit is not transmitting Fast blink continuous Self test has detected an internal failure on this unit Audio Level Indicators Yellow round ch1 or ch2 Master Blinking periodically Audio is present on this channel and is set to the optimum level On steady or most of the time Audio is present on this channel but the level is too high Off Audio is not present OR audio level is too low on this channel...

Page 13: ...oenix 3 Stereo RCA cable WCA 096 12 CAT 5e cable for connection to slave emitter optional WCA 091 25 CAT 5e cable for connection to slave emitter optional Optional Receivers WIR RX15 2 Receiver INFRARED SENSOR BATTERY COVER POWER CHANNEL SWITCH POWER CHANNEL INDICATOR A169 AUDIO INPUT JACK MONITOR MUTE BUTTON VOLUME KNOB RIGHT LEFT MUTE WIR RX18 Receiver BATTERY BAT AP07D A163 VOLUME CONTROL FREQU...

Page 14: ... ft in single channel mode with the RX22 4 receiver 464 sq m 5 000 sq ft in single channel mode with the RX15 2 receiver 279 sq m 4 000 sq ft in single channel mode with the RX18 receiver 186 sq m Audio Inputs Controls Line inputs Phoenix jack for Ch1 and Ch2 accept line level balanced or unbalanced audio Microphone input 3 5 mm stereo jack with signal and bias connected to tip electret microphone...

Page 15: ... RX22 4 receiver 464 sq m 5 000 sq ft in single channel mode with the RX15 2 receiver 279 sq m 4 000 sq ft in single channel mode with the RX18 receiver 186 sq m Master Slave Coverage Area minimum 1 ch mode If slave transmitters are aimed to maximize coverage area so that their coverage areas minimally overlap that of the master 24 000 sq ft in single channel mode with the RX22 4 a master and 1 sl...

Page 16: ...CT NO PERSON HAS ANY AUTHORITY TO BIND WILLIAMS SOUND TO ANY REPRESENTATION OR WARRANTY WITH RESPECT TO THE WIR TX75 PRO 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 o...

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