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Related Manuals for Listen Technologies LT-800-150
Summary of Contents for Listen Technologies LT-800-150
- Page 3 Dear Valued Customer, Thank you for choosing Listen! All of us at Listen are dedicated to providing you with the highest quality products available. We take great pride in their outstanding performance because we care that you are completely satisfi ed. That’s why we independently certify them to the highest quality standards and back them with a limited lifetime guarantee.
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Page 5: Table Of Contents
LT-800 Table of Contents Package Contents 150 MHz Specifi cations 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: Architectural Specifi Cations
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. RF Frequency Range... -
Page 9: Block Diagram
LT-800 Block Diagram POWER In-Line Power Supply 115VAC6 LA-201 0 Hz (provided) 15VAC, 1A Top Mounted Antenna Stud Remote Antenna Connection Transmitter RF Board ANTENNA High Functions controlled by the CP Module RF POWER Input 1 VU Meter 12VDC Mic-Phantom Pwr, Mic, Line Line Phantom Pwr Female XLR-1/4... -
Page 10: Quick Reference
LT-800 Quick Reference LT-800 Front Panel: Controls & Displays Indicates audio input level of Input 1 and Adjust audio input levels Input 2. of Input 1 and Input 2 here. See page 11 for more information. Mix Level: Adjust so Power the Mix Level meter ON / OFF... -
Page 11: Setup Instructions
LT-800 Setup Instructions Unpack the Product Remove outer packaging and plastic cover. Inspect for physical damage. Mount in Rack (if necessary) If rack mounting the unit, install the optional rack mount kit (part LA-326) according to the instructions included with the kit, then install the LT-800 in the rack. NOTE: If rack mounting, you will need to use a rear connection antenna. - 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. 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 SQ™ (Super Quiet) - 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™. -
Page 17: Rf Reception Maximization Strategies
RF Reception Maximization Strategies For proper and dependable operation, Listen receivers need to receive a strong and consistent signal from the originating transmitter. Note that on portable receivers the headset wire is the receiving antenna. The following strategies should be used maximize to this signal: When designing and installing your system, keep in mind that the location of both the transmitting and receiving antennas is critical to maximize broadcast range. -
Page 18: Channel Selection
Wide band channels have lower noise than their narrow band counterparts. 150 MHz The LT-800-150 MHz operates on 6 wide band channels and 26 narrow band channels. • 1 - 6 = Wide Band Channels • 7 - 32 = Narrow Band Channels... -
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
LT-800 Troubleshooting The LT-800 has no power Make sure the LA-207 power supply is connected to a power source and is connected to the jack marked “Power Input”. Make sure the POWER button is pressed in. There is no audio or the audio level is too low Make sure that your audio source is properly connected to Input 1 and/or Input 2. - Page 21 LT-800 Troubleshooting (cont.) There is not sufficient range First make sure that the receivers you are using are operating properly, then make sure that you have an antenna connected either to the top of the LT-800 transmitter or connected to the back of the unit (but not both!).
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Page 22: Warranty
Warranty & Contacting Listen Listen Technologies Corporation (Listen) warrants its transmitters and receivers (LT-82, LT-700, LT-800, LR-42, LR-44, LR-400, LR-500) to be free from defects in workmanship and material under normal use and conditions for the useful lifetime of the product from date of purchase. -
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 Antenna Kit for Rack Mount Universal Rack Mounting Kit 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 Optional Accessories (cont.) LA-112 RG-58 50 Ohm Coaxial Cable (per ft.) LA-128 RG-8 BNC Connector LA-2 -261 LA-261 Lavalier Microphone LA-276 Collar Conferencing Microphone Microphone 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. Cable &...
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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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