Williams Sound WIR TX90 Manual Do Utilizador

MAN 124G

Prior to connecting the power supply and audio source, consider where TX90 will be installed for best coverage of the listening 
area. Ideally, the TX90 should be pointed toward the listening audience where the receivers can pick-up the TX90’s transmission 
line-of-sight.  See manual for coverage drawings.

Connect the supplied power supply to the back of the TX90 (figure 1).  The red LED “Power On” indicator will illuminate.

For single channel mode, plug the audio cable with the installed Phoenix connector in “Channel A” OR the “Channel B” connector.  
For two channel operation, plug the audio cables with Phoenix connectors in both “Channel A” AND “Channel B”  connector.  
NOTE:  By default, the WIR TX90 is set to operate in two channel mode.  To turn Channel A or Channel B on/off, refer to the 
instructions in Step 5.  For optimal performance, turn OFF channels not in use.

The TX90 offers two sets of carrier frequencies for Channel A and Channel B: 2.3 and 2.8MHz or 3.3 and 3.8MHz. The TX90 is 
preset to 2.3 and 2.8MHz.  Move the slide switch to select a pair of operating frequencies.

To activate a channel, press the “CHANNEL” button until the channel “ON” indicator lights. To operate both channel A and B, 
press the “CHANNEL” button until both “ON” indicators light. 

The TX90 offers three presets for the most common audio applications: Music, Voice, and Hearing Assist. The TX90 is factory set  
“Music” mode for maximum audio quality.  To change this preset, press “CHANNEL” button to active channel to set preset for, 
then press the “PRESETS” button until indicator light shows your selection.  After 10 seconds, the setting will be stored.

To adjust the audio input level, first activate the channel(s) you want to adjust by pressing the “CHANNEL” button, then press the 
“VOLUME” button. Turn the “ADJUST” knob clockwise to increase the input signal or counter-clockwise to decrease the input 
signal until the channel “Level” indicator is flashing. After 10 seconds, the setting will be stored.

Audio level NORMAL (optimal): the audio indicator level will 

Audio level too HIGH:  the audio indicator level will 

 or 

Audio level too LOW:  the audio indicator level will be 

To adjust the tone, first activate the channel(s) you want to adjust by pressing the “CHANNEL” button, then press the “TONE” 
button. The tone indicator will light. Now turn the “ADJUST” knob clockwise to emphasize high frequencies (best for hearing 
assistance use) and counter-clockwise to decrease the high frequency emphasis. After 10 seconds, the setting will be stored.

Important: Make sure the infrared receiver being used is on the same frequency as the WIR TX90!  Refer to the operating 
instructions that came with your receiver.