Listen Technologies LT-800-150, User Manual

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People are accustomed to listening to low noise, high fidelity audio
(delivered via CD, DVD, etc.). FM radio systems, such as those made
by Listen, have more inherent noise compared to most sound systems.
To minimize noise, Listen uses a noise reduction technology called
ListenSQ™. Both the transmitter and receiver must have the SQ
feature enabled to achieve the desired results. SQ is available on
new Listen systems, including the system you received in this shipment.
If you are planning to use this product with older Listen systems that
do not have Listen SQ, or equipment not manufactured by Listen, you
must disable Listen SQ.
Your Listen LT-800 has been shipped to you with the SQ feature
enabled. You may need to disable the SQ function for one or more of
the following reasons:
You are using your new Listen LT-800 with older version Listen
receivers that do not have the SQ function.
You are using your new Listen LT-800 with equipment supplied
by other manufacturers (Listen is the only manufacturer using SQ
Technology).
You expect that end users will bring and use their own receivers
that don’t have the SQ function.
NOTE: See page 8 to enable or disable SQ (Super Quiet).
Process Mode
Process mode is used for Audio Gain Control (AGC). With the process
mode enabled, the LT-800 will automatically adjust for inconsistent
signal input levels by raising or lowering the signal level accordingly to
provide a consistent sound output level. This feature should be used in
applications where a consistent sound level is important and the input
levels vary substantially. Typically you would not want to engage the
Process Mode when a speaker’s emphasis is critical to the message
they are conveying.
SQ Summary
• SQ is NOT squelch
• SQ improves noise performance
by at least 20 dB
• SQ is NOT compatible with
older version Listen products
• SQ is NOT compatible with
other manufacturers’ products
• To work properly, SQ must be
enabled for both the transmitter
and receivers
• SQ can be disabled to permit
operation with older Listen
products or other
manufacturers’ products
Listen SQ™ (Super Quiet) -
Improving Your Listening Experience
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