Listen SQ™ (Super Quiet) - Improving Your Listening Experience

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:

1You are using your new Listen LT-800 with older version Listen receivers that do not have the SQ function.

2You are using your new Listen LT-800 with equipment supplied by other manufacturers (Listen is the only manufacturer using SQ Technology).

3You 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).

SQ Summary

•SQ is NOT squelch

•SQ improves noise performance by at least 20dB

•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

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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.

Basic and Expanded Mode

In the default Listen channel mode, only the most commonly used channels are available. This is called “Basic Mode”. When the LT-800 is in Basic Mode, “L/O” (lock-out) will be displayed on the LCD, meaning some transmission channels are unavailable. If the channel needed is not available in Basic Mode, access to all transmission channels is achieved in “Expanded Mode”. To access Expanded Mode press and hold the channel select “down” button while powering on the unit. To return to Basic Mode, repeat the same process of powering on the unit while holding the “down” button.

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Listen Technologies LT-800-216, LT- 800-072 manual Listen SQ Super Quiet Improving Your Listening Experience
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LT- 800-072, LT-800-216 specifications

Listen Technologies has established itself as a leading provider of assistive listening systems, and its LT-800-072 and LT-800-216 transmitters are exemplars of their commitment to quality and innovation. These devices are designed to enhance the audio experience in environments where clear sound transmission is crucial, such as theaters, lecture halls, museums, and places of worship.

The LT-800-072 is a powerful, reliable FM transmitter that operates on the 72-76 MHz frequency band. It supports both mono and stereo transmission, making it versatile for various applications. One of its standout features is its robust selectable power output, which allows users to adjust the strength of the transmission based on the specific requirements of the environment, ensuring optimal coverage without interference. This flexibility is particularly beneficial in larger spaces, where sound needs to travel further without losing clarity.

On the other hand, the LT-800-216 is designed for use within the 216 MHz frequency range, offering another layer of versatility for varying listening preferences and regulatory requirements. It boasts a compact design, making it easy to integrate into existing audio systems or set up independently. The device also features a built-in audio input that accommodates multiple audio sources, including microphones, mixers, and other devices, allowing for seamless integration and functionality.

Both transmitters utilize advanced technology to deliver exceptional audio quality. The modulation techniques employed in these devices help eliminate static and background noise, ensuring that users receive crystal clear sound. The inclusion of multiple channels allows simultaneous transmission, which is a significant advantage in settings where multiple languages or presentation options are necessary.

Durability and ease of use are also critical characteristics of the LT-800-072 and LT-800-216. They are constructed with high-quality materials that withstand the rigors of regular use, making them ideal for both permanent installations and portable applications. Additionally, user-friendly controls and clear indicators simplify operation, enabling operators to focus on delivering an excellent auditory experience rather than troubleshooting technical issues.

In summary, the Listen Technologies LT-800-072 and LT-800-216 transmitters provide advanced sound transmission solutions characterized by flexibility, excellent sound quality, and robust build quality. Their capabilities make them suitable for various applications, effectively addressing the diverse needs of listeners in a range of environments.
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