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Summary of Contents for Listen LT-800-150
- Page 3 Should you experience any problems whatsoever with your Listen products, we are ready to help you in any way we can with prompt, efficient customer care. Because at Listen, it’s all about you! And should you have any comments on how we might improve our products or our service, we’re here to listen.
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Page 5: Table Of Contents
LT-800 Table of Contents Package Contents 150 MHz Specifications Block Diagram Quick Reference Setup Instructions Operating Instructions Audio Control Listen SQ™ (Super Quiet) RF Reception Maximization Strategies Coaxial Cable Channel Selection 150 MHz Frequency Chart Troubleshooting Warranty Contacting Listen Optional Accessories... -
Page 7: Package Contents
LT-800 Package Contents LT-800 Contents Listen Part Number • LT-800-150 (150 MHz) LT-800-150 (150 MHz) • 12 VDC Power Supply • User Manual • Quick Reference Card Optional Accessories See pages 19-20... -
Page 8: 150 Mhz Specifications
The device shall have the following audio controls: input level, mix level and an adjustable low pass filter (contour). The device shall have an audio processor that is capable of automatic gain control and limiting. The Listen LT-800-150 is specified. Specifications* RF Frequency Range 150.8000 MHz - 152.3500 MHz... -
Page 9: Block Diagram
In-Line Power Supply 115VAC6 LA-201 0 Hz HEADPHONE (provided) 15VAC, 1A Power Supply Down CPU Module Volume Listen LCD Display Backlighted MIX Level Top Mounted Compression Ratio VU Meter Antenna Stud (internal adjustment) Remote Antenna Connection Transmitter RF Board Pre-emphasis... -
Page 10: Quick Reference
Mix Output: These connectors Remote Antenna Connection: or line level input. This Input 2 audio source, See page 19 or the Listen contain a mix of Input 1 and combination connector not used to increase or website for details on antennas Input 2. -
Page 11: Setup Instructions
Connect Antenna Connect the antenna (not included) according to the installation instructions. Only use an antenna supplied by Listen. If you are connecting the antenna directly to the top of the LT-800, you will need to remove the rubber plug on top of the unit. If you are using a remote antenna connected to the rear of the unit, do not connect an antenna to the top connector. - Page 12 LT-800 Setup Instructions (cont.) Set SQ™ (Super Quiet) and Process Features Your transmitter is shipped to you with SQ (super quiet) enabled and Process disabled. For a detailed description of these features and when to use them, please refer to page 12. To Disable or Enable SQ and Process Features: With the unit on press and hold the channel select “Down”...
- Page 13 LT-800 Setup Instructions (cont.) Connect Audio Inputs The LT-800 has two audio input options: Input 1 and Input 2. Input 1 is a balanced connection using either an XLR or 1/4” phono connector. Input 2 has two unbalanced mixing phono connectors. Use Input 1 if you are using a microphone or if you have a balanced connection such as from a professional audio mixer (you can also use Input 1 for unbalanced connections).
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Page 14: Operating Instructions
LT-800 Operating Instructions Power Unit On Turn power on by pressing the power button. Select a Channel Select the transmit channel by pressing the channel select UP and DOWN buttons. See Channel Selection on page 14 for more information. Channel Select UP and DOWN buttons Lock on Channel Once you determine your transmit channel, you can lock the transmitter on that channel. -
Page 15: Audio Control
LT-800 Audio Control Adjust Audio Input Level Adjust the input knob counterclockwise to add gain to Input 1. This will decrease gain to Input 2. Adjust input knob clockwise to add gain to Input 2. This will decrease gain to Input 1. If you have two audio sources connected to both Input 1 and 2, adjust the level of one input using the VU meter, then adjust the output level of the other audio source. -
Page 16: Listen Sq™ (Super Quiet)
Listen systems, including the system you received in this shipment. older version Listen products If you are planning to use this product with older Listen systems that • SQ is NOT compatible with do not have Listen SQ, or equipment not manufactured by Listen, you must disable Listen SQ. -
Page 17: Rf Reception Maximization Strategies
If you need to run cable over a length greater than 75 feet for 150 MHz applications or to maxi- mize broadcast range, Listen recommends that you use RG-8 cable rather than RG-58. RG-8 is a lower loss cable, meaning that more of your signal will reach the antenna. -
Page 18: Channel Selection
Listen equipment. This process is trial Wide Band Recommendation and error. Before turning on the transmitter, listen to the wide band Listen recommends that you always channels on the receivers (channels 1-6). Listen to the audio through... -
Page 19: 150 Mhz Frequency Chart
150 MHz Frequency Chart Channel Frequency 150.900 152.400 151.500 152.100 151.200 151.800 150.850 150.950 151.000 151.050 151.100 151.150 151.250 151.300 151.350 151.400 151.450 151.550 151.600 151.650 151.700 151.750 151.850 151.900 151.950 152.000 152.050 152.150 152.200 152.250 152.300 152.350... -
Page 20: Troubleshooting
You should be able to see the VU meter deflect on Input 1 or Input 2 corresponding with the input level of the audio source. You can listen to the audio source by connecting a headset to the front panel jack and adjusting the Monitor volume control. - Page 21 In addition make sure you are using the correct antenna type for your unit. You might want to use a remote antenna (provided by Listen) that can be mounted on a mast or wall. Try using different frequencies to find one with less interference.
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Page 22: Warranty
Utah. In the first ninety days after purchase, any defective product will be replaced with a new unit. After 90 days, Listen will, at its own discretion either repair or replace transmitters and receivers with a new unit or a unit of similar type and condition. -
Page 23: Optional Accessories
Optional Accessories Antenna Accessories LA-134 LA-133 LA-132 Telescoping Top Mounted 90˚ Helical Antenna Universal Antenna Kit Antenna (150 MHz) (150 MHz) LT-800 Rack Mount Accessories LA-135 LA-326 Universal Rack Mounting Kit Antenna Kit for Rack Mount Includes components for single and dual rack configuration and a security cover NOTE: Rack mounted units cannot use the LA-134 top mounted antenna. - Page 24 Conferencing Behind-the-Head ¼ in. to 3.5 mm Over-the-Ear Microphone Microphone Microphone Microphone Microphone Presentation Style Adapter for LT-800/LT-82 NOTE: To use Listen microphones you must use a converter (LA-280) to adapt the 3.5 mm connection to a 1/4” phono connection.
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- Page 28 Listen Technologies Corporation 14912 Heritagecrest Way Bluffdale, Utah 84065-4818, U.S.A. +1.801.233.8992 1.800.330.0891 North America +1.801.233.8995 www.listentech.com Printed in China © 2009 Listen Technologies Corporation All Rights Reserved 09162009 ®...
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