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Listen Technologies LR-100 User Manual

Stationary receiver / power amplifier
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User's Manual
LR-100 Stationary Receiver / Power Amplifier
D o n ' t m i s s a s i n g l e s o u n d . L i s t e n .
R
www.ListenTech.com
Listen Technologies Corporation
8535 South 700 West, Suite A
Sandy, Utah 84070-2515 USA
Telephone: +1.801.233.8992
Toll-Free (USA): 1.800.330.0891
Fax: +1.801.233.8995
E-mail: info@listentech.com
V.030825.
Listen and the Listen logo are registered trademarks of Listen Technologies Corporation.
Document #LM-100
1
Copyright © 2003 Listen Technologies Corporation. All Rights Reserved.

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  • Page 1 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll-Free (USA): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@listentech.com V.030825. Listen and the Listen logo are registered trademarks of Listen Technologies Corporation. Document #LM-100 Copyright © 2003 Listen Technologies Corporation. All Rights Reserved.
  • Page 2 Thank you for purchasing this Listen product! If you have any questions or would like to offer suggestions on future Listen products, please contact us at the address shown below. LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com...

  • Page 3: Specifications

    Power Supply Optional External Battery *Wireless Transmission System Specifications: End-to-end. LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com 72 MHz: 72.025 - 75.950 MHz 216 MHz: 216.0250 MHz - 216.975 MHz .6 uV typical, 1 uV maximum for 12dB SINAD...
  • Page 4 Squelch LED is illuminated. When squelched, receive audio is muted LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com SQUELCH INDICATOR When adjusted properly, this...
  • Page 5 Selects audio being routed to the speaker amplifier to either the OUTPUT or AUXILIARY audio LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com CONTROL Remote control of UP, DOWN, and MUTE functions.

  • Page 6: System Block Diagram

    Please carefully compare the contents of your kit with the list found on page 2 of this manual. If any items are missing or damaged, please contact Listen Technologies. If items were dam- aged in shipment, contact your carrier immediately and retain all packaging for inspection by your carrier.
  • Page 7 If you plan to mount the LR-100’s 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 installa- tions looks similar to this cable, it won’t work with your Listen system.
  • Page 8 CAUTION: When installing antennas, ensure the antenna is clear of power lines. NOTES: If the RF signal to the LR-100 is too high, the audio will be distorted. This may happen if you are within 40 feet of the LT-800 transmitter. Consider reducing the output power of the transmitter or optionally removing the antenna on the LR-100 (there is sufficient internal antenna inside the LR-100 to receive an adequate signal from the transmitter).

  • Page 9: Installation

    For mounting on vertical or horizontal surfaces, use the optional L bracket mounting kit, part number LA-327. Powering the Unit Note: The LR-100 will shut down to prevent damage to the unit if the speaker terminals are shorted. Please see page 19 for details. AC Power Operation The unit comes with a UL listed inline power supply designed for 115VAC, 60Hz operation.
  • Page 10 SQUELCH LED on the front panel), AUXILIARY audio is routed to the OUTPUT. When RECEIVE audio is not squelched, RECEIVE audio only is routed to the OUTPUT. LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com Speaker +...
  • Page 11 There are two unbalanced phono audio OUTPUT connectors. The nominal OUTPUT audio level is –10dBu. LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com XLR pin out diagram for a balanced connection: Pin 2 + Pin 3 –...

  • Page 12: Speaker Connection

    LR-100 Stationary Receiver / Power Amplifier AUXILIARY Input The LR-100 has an AUXILIARY input that allows for greater functionality of the unit for a variety of applications. The AUXILIARY input consists of a balanced input, combination connector (female XLR and 1/4 in) and two unbalanced phono connectors. All of these inputs are actively mixed together.

  • Page 13: Using A Remote Antenna

    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 installa- tion. You can use the RF POWER indication on the LCD to provide a relative RF signal strength.
  • Page 14 LR-100 Stationary Receiver / Power Amplifier Installation – Remote Control The LR-100 can be programmed (see Set-up – Programming, page 17) so only used channels can be selected. For example: You are broadcasting material on channels A, E and F (72MHz).

  • Page 15: Understanding The Lcd Display

    Which channel(s) should I use? Your LR-100 gives you the ability to select both wideband and narrowband receiving chan- nels, so finding a clear reception channel should not be difficult. Listen recommends the use of wideband channels (channels designated with a letter on 72 MHz or starting with a “2” on 216 MHz), unless you are interfacing with an existing narrowband transmission system.

  • Page 16: Set-Up Adjustments

    22) as long as the adjacent channel transmitter is at least 50% further away from an LR-100 than its own transmitter. Example: The transmitter for the LR-100 on channel E is 100 feet from the LR-100. The adjacent channel transmit- ter on channel D should be at least 150 feet away.

  • Page 17: Channel Selection

    Selecting SQ ON or OFF See “What is Listen SQ?” on page 6. If the transmitter that is broadcasting to the LR-100 is SQ capable, make sure the SQ switch for the transmitter and the LR-100 is turned ON. If not, the SQ switch should be turned OFF.
  • Page 18 CAUTION: Ensure proper setting of the squelch adjustment to prevent user ear damage and unwanted radio noise. Users will find unsquelched radio noise very objectionable. LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com Minimum squelch threshold.

  • Page 19: Resetting After An Overload Condition

    LR-100 Stationary Receiver / Power Amplifier Resetting After an Overload Condition In an overload condition, the LR-100 will go into a protective state to protect the unit and power supply from excessive current and heat. This condition will occur if the speaker termi- nals are shorted to each other or if they are shorted to the chassis for over 15 seconds.

  • Page 20: Troubleshooting

    Make sure the audio level is not set too high. Make sure you are not too close to the transmitter. LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com...
  • Page 21 801.233.8992, or you can e-mail us at support@listentech.com. Our full contact information is available on page 1 of this manual. LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com...

  • Page 22: Channel Selection Chart

    72.950 72.975 Note: If you plan to use your LR-100 with another manufacturer’s transmitter, please consult our frequency compatibility chart on the Listen website for assistance in selecting the correct channel for operation. Please note that ListenSQ with other brands and should be disabled in this case.

  • Page 23: Fcc Statement

    The user is cautioned that changes and modifications made to the equipment without the approval of the manufacturer could void the user’s authority to operate this equipment. LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com...

  • Page 24: Warranty

    Listen Technologies Corporation (Listen) warrants its transmitters and receivers (LT-700, LT- 800, LR-100, LR-300, LR-400, LR-500, LR-600, etc.) to be free from defects in workman- ship and material under normal use and conditions for the useful lifetime of the product from date of purchase.

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