3. Set Up The Transmitter
Ideally, the TX4 Transmitter should be at ear-
level height or above. The infrared light pattern
is cone-shaped as it leaves the Transmitter, as
shown in Figure 4. The best reception is inside
the cone. Sunlight can cause infrared interfer-
ence in the form of a buzz, hiss, or static. Thus,
the system cannot be used outdoors and may not
work properly inside if a lot of direct sunlight is
present. Closing drapes or blinds will help if sun-
light is a problem.
Any number of Receivers may be used with the
TX4 Transmitter, but use only one Transmitter in
a room at the same time. Otherwise, interference
will occur.
2. Connect the Transmitter to the
Audio Source
For best operation, the Audio Cable can be con-
nected directly to your VCR or TV’s audio out-
put. As a second choice, the TX4 Audio Cable
can also be connected to an earphone/headphone
jack. (Use the plug adapters supplied if neces-
sary.)
If you have difficulty finding the direct audio
output on your TV, consult its operating instruc-
tions.
If your TV has no direct audio output or ear-
phone/headphone jack, use the MIC 059 TV
Microphone supplied. Plug the TV Mic into the
Audio Cable as shown in Figure 1. The micro-
phone has a self-adhesive clip that can be
attached near the loudspeaker of your TV.
(See Figure 5.)
The TX4 Transmitter features an Automatic
Level Control to adjust for different audio signal
levels and to maintain a comfortable listening
level. When a proper audio signal is present, the
“Audio Signal” indicator will flash coincidently
with the audio signal. The red “Auto Power”
indicator will light constantly when enough
audio signal is present. If the audio signal is
removed, the “Auto Power” indicator will turn
OFF after approximately 4 minutes and will
remain off until an audio signal is reconnected.
Williams Sound
®
Helping People Hear
2
Transmitter
Receiver
Infrared Light "Cone"
Transmitter on top
of TV
TV Microphone
near speaker
Figure 5: TX4 Transmitter On TV
Figure 4: Infrared Light Pattern
