User’s Manual LR-100 Stationary Receiver / Power Amplifier Don’t miss a single sound. Listen. Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@listentech.
Welcome to Listen! Dear Valued Customer, Thank you for choosing Listen! All of us at Listen are dedicated to providing you the hightest quality products and prompt, efficient customer care. Our products are manufactured in an ISO-9000 factory that has been independently certified to the highest quality standards. We stand ready to answer any questions you might have during installation or in the operation of our products.
Architectural Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Setup . . . . . . . . . .
Specifications Specifications Architectural Specifications The FM stationary receiver - power amplifier (receiver) shall be capable of receiving on 57 wide and narrow band channels in the frequency ranges of either 72MHz or 216MHz. The receiver shall be programmable to electronically lock out unneeded channels. The device shall have an adjustable squelch with an LED indication. The frequency response of the device shall be within 3dB from 63Hz to 15KHz at 72MHz, or within 3dB from 63Hz to 10kHz at 216MHz.
Quick Refernce Quick Reference LR-100 Front Panel VU METER: Set Receive and Auxiliary levels so that the red LED (at right) does not illuminate POWER switch: if operated on battery, switch is inoperative MUTE: when lit, the OUTPUT audio is muted. MUTE is activated and deactivated by a momentary closure to ground on the rear detachable terminal block (see next page).
Quick Reference Quick Reference LR-100 Rear Panel Optional 12V power: connect optional battery or +12VDC source here. The battery can be recharged; see page 5. ANTENNA connection: attach supplied 90 degree helical antenna or optional remote antenna here. Uses standard 50 Ohm BNC connector. SPEAKER connection: connect a 4 Ohm (or greater) loudspeaker here. CONTROL: remote control of UP, DOWN and MUTE functions. All functions are momentary closures to common.
Block Diagram LR-100 Block Diagram +12 VDC External Battery 3 4 Remote Control 5 6 7 Common Ground 115VAC External Power Supply LA-201 Speaker 1 2 8 Power On/Off Electronic Switch Up Mute Down Power Supply CPU Module Seek Aux Listen LCD Display Remote Antenna (Flexible helixal antenna provided) BNC Speaker Output 3.
Setup LR-100 Setup Instructions LR-100 Setup Instructions · If you are using the LR-100’s power amplifier, make sure the unit is given sufficient room around the ventilation holes. · If you are rack mounting the LR-100, use the optional LA-326 rack mounting kit. This kit allows for single and dual rack mounting, and comes with a security cover. · For mounting on vertical or horizontal surfaces, use the optional L bracket mounting kit, part number LA-327.
Transmission LR-100 Installation Installation - Audio Connections (See Quick Reference on pages 3-4.) OUTPUT Audio The OUTPUT audio section is composed of an OUTPUT audio selection switch, a male XLR balanced audio OUTPUT connector and two phono unbalanced audio OUTPUT connectors. OUTPUT Audio Selection Switch This switch selects what audio is routed to the OUTPUT audio connectors. The switch has three positions: 1. RX ONLY. In this position, only RECEIVE audio is routed to the OUTPUT.
Speaker/Antenna Install LT-100 Speaker Connection LR-100 Antenna Installation The LR-100 contains a 44-watt (31 watt RMS), 4 Ohm power amplifier. Installation – Antenna A properly installed antenna is critical to the operation of the LR-100. Without a strong and consistent RF signal from the transmitter, the LR-100 will not meet the needs of your installation. You can use the RF POWER indication on the LCD to provide a relative RF signal strength.
Programming LR-100 Programming To make setup adjustments, remove the two hex screws that secure the front panel security cover. Setup VU Meter The front panel VU meter indicates the audio level of the OUTPUT signal. When making input audio level adjustments, ensure that the red LED does not illuminate. Input Audio Levels Proper adjustment of input levels is critical to the proper operation of the LR-100. a. Receiver Audio Level Adjustment.
Squelch Adjustment Squelch Adjustment Squelch The squelch adjustment is important to ensure the receiver audio is muted when no signal is present. You want to set the squelch adjustment for the highest setting without squelching the incoming signal. To set the squelch control: a. Turn the transmitter OFF. b. Listen to the receiver audio on the speaker or headphone. Turn the audio level down in the beginning. c. Adjust the squelch adjustment clockwise until the squelch LED goes off (not illuminated).
Troubleshooting LR-100 Troubleshooting The unit does not power up Ensure the power supply and/or battery is connected properly. Please note: this product no longer utilizes internal fuses. The fuses have been replaced with an automatic resetting devie that automatically protects the device in an overload condition. See Appendix F: Resetting After an Overload Condition for more details. The audio is muted occasionally Check to see if the unit is squelching (indicated by the squelch LED).
Listen SQ ™/ Squelch Listen SQ™- Improving Your Listening Experience We are accustomed to listening to low noise, high fidelity audio (delivered via CD, DVD, etc.). FM radio systems, such as those made by Listen, are inherently noisy compared to most sound systems. To reduce noise of our systems, Listen now offers a noise reduction technology called ListenSQ™. Both the transmitter and receiver must have SQ on to achieve the desired results.
Channel Selection Channel Selection It is highly recommended that after channel selection has been achieved, you lock the channel so that it cannot be changed by the user. To accomplish LOCK on the LR-100, press the SEEK button for 5 seconds. Repeat the process to unlock. It is important to choose channels that are free from interference to achieve proper operation of your Listen equipment. This process is trial and error.
RF Reception/Resetting RF Reception Maximization Strategies For proper and dependable operation, Listen receivers should receive a strong and consistent signal from the originating transmitter. The following strategies should be used maximize this signal: a. When designing and installing your system, keep in mind that the location of both the transmitting and receiving antennas is critical to maximizing signal strength. b.
Coaxial Cable Coaxial Cable The antenna for the LR-100 can be mounted directly on the unit if desired. However, you may find that the unit will provide better performance when the antenna is located elsewhere. If you plan to mount the antenna in a different location than on the top of the unit, you must use cable and connectors rated at 50 Ohms. Although cable used for cable TV installations looks similar to this cable, it won’t work with your Listen system.
72MHz Compatibility Chart 72MHz Compatibility Chart Frequency MHz 16 72.0250 72.0500 72.0750 72.1000 72.1250 72.1500 72.1750 72.2000 72.2250 72.2500 72.2750 72.3000 72.3250 72.3500 72.3750 72.4000 72.4250 72.4500 72.4750 72.5000 72.5250 72.5500 72.5750 72.6000 72.6250 72.6500 72.6750 72.7000 72.7250 72.7500 72.7750 72.8000 72.8250 72.8500 72.8750 72.9000 72.9250 72.9500 72.9750 74.6250 74.6500 74.6750 74.7000 74.7250 74.7500 74.7750 75.2250 75.2500 75.2750 75.3000 75.3250 75.3500 75.3750 75.4000 75.
216MHz Compatibility Chart 216MHz Compatibility Chart Frequency MHz Listen 216.0125 216.0250 216.0375 216.0625 216.0750 216.0875 216.1125 216.1250 216.1375 216.1625 216.1750 216.1875 216.2125 216.2250 216.2375 216.2625 216.2750 216.2875 216.3125 216.3250 216.3375 216.3625 216.3750 216.3875 1A 2A 3A 1B 2B 3B 1C 2C 3C 1D 2D 3D 1E 2E 3E 1F 2F 3F 1G 2G 3G 1H 2H 3H 216.4125 216.4250 216.4375 216.5125 216.5250 216.5375 216.5625 216.5750 216.5875 216.6125 216.6250 216.6375 216.6625 216.6750 216.6875 216.
Compliance Notice Compliance Notice Listen’s LR-100 Stationary Receiver / Power Amplifier This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) These devices may not cause harmful interference, and (2) these devices must accept any interference received, including interference that may cause undesirable operation.
Warranty Warranty Listen Technologies Corporation (Listen®) warrants the LT-800 Stationary Transmitter 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. This warranty is only available to the original end purchaser of the product and cannot be transferred. Warranty is only valid if warranty card has been returned within 90 days of purchase.
Optional Accessories Optional Accessories Antenna Kit for the LA-3 326 Rack Mount Kit LA-125 for 72MHz and LA-126 for 216MHz 216MHz Ground Plane LA-122 Universal Antenna Kit (Remote Mount, outdoor) LA-107 for 216MHz The single solution for all of your indoor remote antenna needs. Includes: 72 and 216MHz components; flexible and rigid dipoles and monopole radials; hardware for multiple mounting configurations; and 25 feet (7.6 m) of RG58 coax cable.
Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@ListenTech.
