3
S
YSTEM
O
VERVIEW
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.
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