Listen Technologies LT-803-072, LP-3CV-072, LR-200-072, LA-161 manual System Overview, Input Source

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Design Guide

System Overview

There are four main components to the Value Package – the transmitter, antenna, receiver and input source.

Input Source

The input source can be audio from a sound board, microphone or a personal audio source like a CD player, MP3 player, computer, DVD, etc. Audio will be connected into the audio inputs of the Stationary Transmitter.

Transmitter

The LT-803-072 transmitter modulates the audio on an FM carrier and transmits the signal via an antenna.

LT-803-072 Stationary 3-Channel

FM Transmitter (72 MHz)

LT-803

Antenna

The LP-3CV-072 includes the LA-123 90° Helical Antenna. This antenna has a BNC connector and should be mounted on the back of the LT-803-072. For further antenna options see page 11.

LA-123 90° Helical Antenna

Receivers

The LR-200-072 receiver captures the signal sent from the transmitter and outputs it into the LA-161 Single ear bud. Listen offers a variety of receivers.

72

LR-200-072 Standard 3-Channel

 

FM Receiver (72 MHz)

RECE

IVER

STANDARD

6

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Contents Page Page Page Page Value Package Table of Contents Page Page Page Value Package Design Guide Table of Contents Value Package ContentsPage Frequency Modulation FM Technology Overview System Overview Input SourceKey Concepts in Value Package Setup Input 1 Connecting the audio sourceInput 2 Connect the audio source Using Multiple inputs Mix LevelFind transmission channels Monitor JackTest Tone Antenna placement rear Rear mounted antennaAlternative Options for Value Package Setup Remote antennaReceiver Options Rack Mounting the Transmitter Design Guide Design Guide Page Page Page LT-803-072 User’s Manual Table of Contents LT-803-072 Package ContentsListen Configurations Page LT-803-072 Specifications Architectural SpecificationLT-803-072 Block Diagram PowerInput Level Indicators LT-803-072 Quick ReferenceLT-803-072 Setup Instructions Connect PowerUnpack the Product Mount LT-803-072s in Rack if desiredSet RF power Connect Audio InputsPower Unit On LT-803-072 Operating InstructionsSelect a Channel Lock on ChannelAdjust Audio Input Level Test Tone if necessaryAdjusting the Contour knob Adjust Mix LevelProcess Mode Accessories for LT-803-072 AntennasDesign Guide Page Page Page LR-200-072 User’s Manual Table of Contents LR-200-072 Package ContentsPage LR-200-072 Specifications Specifications LR-200-072LR-200-072 Block Diagram LR-200-072 Quick Reference LR-200-072 Setup Instructions Open the front access doorSelect Battery Type Remove the productChannel Select Place Batteries in UnitConnect an Earphone or Headset Adjust the volume control Turn the Unit OnAccessories for LR-200-072 AccessoriesLR-200-072 LR-LT200-800-072 Page Page Page Supplementary Information Table of Contents Page Battery Charging Information Charging with a drop-in chargerCharging with the LA-202 Frequency Chart Troubleshooting TroubleshootingAm using another manfactures receiver with the LT-803-072 Frequently Asked Questions Frequently Asked QuestionsCompliance Notice and FCC Statement Compliance NoticeWarranty and Contact Information WarrantySupplementary SupplementaryLT-800 Listen Technologies Corporation All Rights Reserved

LA-123 90, LA-161, LT-803-072, LR-200-072, LP-3CV-072 specifications

Listen Technologies offers a range of innovative assistive listening solutions tailored to improve the audio experience for individuals in various settings. Among its popular devices are the LR-200-072, LP-3CV-072, LA-161, LA-123 90, and LT-803-072. Each of these products features advanced technology designed to enhance auditory comprehension, ensuring that all users can fully participate in events or activities.

The LR-200-072 is a lightweight, portable, and easy-to-use portable receiver. Its digital tuning provides clear sound reproduction, while the wide frequency response ensures that users hear every detail. The LR-200-072 supports multiple channels, allowing users to easily switch between audio sources in environments such as auditoriums and theaters. With its long-lasting battery, this receiver is ideal for extended use in any setting.

The LP-3CV-072, on the other hand, is a powerful transmitter that excels in broadcasting audio to multiple receivers, such as the LR-200-072. Featuring adjustable transmission power, the LP-3CV-072 ensures a strong and reliable signal, even in challenging environments. Its compact design and robust construction make it suitable for various applications, including conferences, language interpretation, and public announcements.

The LA-161 is a high-performance antenna that enhances the range and signal quality of Listen Technologies’ systems. This antenna is specifically designed to work seamlessly with the LR-200-072 and LP-3CV-072, optimizing the performance of the entire system. Its durable construction ensures reliability under various environmental conditions, while its design facilitates effortless installation.

For individuals who require additional assistance, the LA-123 90 is a versatile loop hearing device that helps users with hearing aids or cochlear implants. The LA-123 90 generates an electromagnetic field, allowing compatible devices to capture sound via the telecoil. This device ensures unobtrusive and clear audio transmission, significantly enhancing communication and understanding.

Lastly, the LT-803-072 is a robust and effective transmitter that offers multiple channels and a wide frequency range. This device is designed for compatibility with various Listen Technologies receivers, ensuring users can enjoy uninterrupted audio experiences. The LT-803-072 is particularly useful in settings like educational institutions, conferences, and places of worship, where clear audio is essential for engagement.

Together, these devices from Listen Technologies demonstrate a commitment to improving accessibility and enhancing the audio experience for individuals in various environments. Their advanced features, reliable technologies, and user-friendly designs set them apart as leaders in assistive listening solutions.
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