Wireless FM Receiver/Speaker
LR-600

Highlights

  • Superior audio quality – 80 dB signal-to-noise ratio (SNR), setting the industry’s sound quality standard.
  • 57 channels.
  • 100 % Digital – Listen receivers are digitally-tuned so the transmission won’t drift.
  • Limited Lifetime Warranty with hassle-free support.
  • Look & Listen™ LCD shows channel, battery status, and signal strength.
  • Uses standard alkaline or nickel-metal hydride (NiMH) batteries.
  • Built in SmartCharge™ won’t allow batteries to overcharge. Charging circuitry is conveniently built into Listen’s receivers.
  • Uses either batteries or a power supply.
  • Unbalanced aux inputs and outputs.
  • Top-mounted channel and volume controls.
  • Adjustable 3-band equalizer.
  • Many accessory options make Listen products ideal for a wide range of applications.

Overview

Amplification anywhere without wires! All-in-one wireless receiver, 2-channel 10 Watt power amplifier (15 Watt Peak, 10 Watt RMS). Place up to 3,000 feet away (at 216 MHz) from the stationary transmitter and 150 feet away from a Listen portable transmitter to receive and amplify the transmission audio. Perfect for Soundfield applications! This unit is powered by AA batteries (alkaline or NiMH rechargeable), or 15VAC power supply or 12 VDC, for 15/10 Watt continuous power. It has unbalanced auxiliary input and output ports. Listen's signature Look&ListenTM LCD display shows channel, lock, and battery level. Comes with adjustable mounting bracket.

Includes

LR-600 Portable Display FM Receiver
15 VAC power supply
Owner’s manual
Mounting nut (16 mm)
Mounting hardware

Configurations

LR-600-072 Wireless FM Receiver/Speaker (72 MHz)
LR-600-216 Wireless FM Receiver/Speaker (216 MHz)

Architectural Specs

The FM speaker/receiver shall be capable of receiving on 57 wide and narrow band channels. The signal to noise ratio shall be 80 dB or greater. The receiver shall be programmable to electronically lock out unused channels. The device shall be able to be locked on a single channel. The receiver shall be capable of seeking channels. The device shall have a programmable squelch. The device shall have an audio frequency response of 50 Hz - 15 kHz (±3 dB) at 72 MHz and 50 Hz - 10 kHz (±3 dB) at 216 MHz. The device shall have an adjustable squelch and three-band equalizer. The device shall incorporate an LCD display that indicates channel, programming, battery level, low battery, battery charging, RF signal strength and channel lock status. It shall also incorporate an electronically lockable volume and channel controls. Controls shall be found on the top and rear of the unit. The device shall be powered by a power supply or eight (8) AA batteries The speaker should have a minimum dBSPL of 110 dB (±3 dB). An included bracket will be able to be used as a handle for carrying, or be adjustable up to 360 degrees around the unit for mounting. The Listen LR-600 is specified.

CAD Drawing

    • Specifications

     SpecificationsLR-600-072 LR-600-216
    RFRF Frequency Range72.025 - 75.950 MHz216.0125 - 216.9875 MHz
    Number of Channels17 wide band, 40 narrow band19 wide band, 38 narrow band
    Frequency Accuracy± .005% stability 32 to 122 ºF (0 to 50 ºC)
    Antenna (External)Various antennas available
    Antenna Connector (External)BNC
    Antenna (Internal)Internal antenna
    SquelchProgrammable in 20 steps, automatic on loss of RF signal
    ComplianceFCC Part 15, Part 90, Industry Canada, RoHS
        
    Audio** All system specifications are wireless end to end**
    System Frequency Response50 Hz - 15 kHz (±3 dB)50 - 10 kHz (±3 dB)
    System Signal to Noise RatioSQ enabled 80 dB, SQ disabled 60 dBSQ enabled 80 dB, SQ disabled 50 dB
    System Distortion<2% total harmonic distortion (THD) at 80% deviation
    EqualizerThree (3) band, continuously adjustable via rear panel trim posts
    Unbalanced OutputTwo (2) phono connectors, unbalanced, 0 dBu nominal input level adjustable, +11dBu maximum, impedance 1k ohm
    Internal/External Speaker Output15/10 Watts (peak/RMS) continuous power with 4 ohm load
      
    ControlsUser Controls (Back Panel)Power/charging, channel UP/DOWN, SEEK (channel, SEEK and volume are lockable)
    User Controls (Top Panel)Volume UP/DOWN, Channel UP (lockable)
    Set-up Controls (Back Panel)Internal/external antenna, alkaline/NiMH batteries, SQ enabled/disabled
    ProgrammingChannel & volume lock, channele lock-out, squelch
        
     DisplayChannel designation, programming, battery level, battery charging, RF signal strength and channel lock 
        
     Battery TypeEight (8) AA batteries, alkaline or NiMH
    PowerBattery Life (Listen Batteries)12 hours alkaline (LA-361), 10 hours NiMH rechargeable (LA-362)
    Battery Charging (NiMH only)Fully automatic, 13 hours
    Power Supply (Input)120 VAC, 60 Hz, 19 Watts
    Power Supply (Output)15 VAC, 1 Amp
    Power Supply ConnectorOutput Connector: 0.02 in (5.0 mm) OD, 0.01 in. (2.5 mm) ID, barrel type
    Power Supply ComplianceUL Listed
       
    PhysicalDimensions (H x W x D) 7.0 x 11.0 x 9.0 in (17.8 x 27.9 x 22.9 cm) Handle stads off unit 2.0 in (5.1cm)
    ColorDark grey with black grill
    Unit Weight6.2 lbs (2.8 kg)
    Unit Weight with Power Supply7.6 lbs (3.5 kg)
    Unit Weight with Eight (8) AA Batteries6.8 lbs (3.1kg)
    Shipping Weight10 lbs (2.8 kg)
    Mounting Nut16 mm
        
    EnvironmentalTemperature - Operation -10 ºC (14 ºF) to +40 ºC (104 ºF)
    Temperature - Storage -20 ºC (-4 ºF) to +50 ºC (122 ºF)
    Humidity0 to 95% relative humidity, non-condensing
        
    Specifications are subject to change without notification

    None

    Used With

    Accessories

    Support Documents

    • FAQ

     
    How is the speaker powered?
    The LR-600 comes with an AC power supply or you can use eight (8) AA batteries.
    Does the LR-600 have an auxiliary input?
    Yes. The LR-600 has audio phono input connectors on the back to connect to projectors, laptops, DVD etc.
    How many speaker/receivers can I have in a system?
    As many as you need, the number is endless.
    How long do the batteries last on the LR-600?
    Alkaline batteries last 12 hours and NiMH rechargeable batteries will last 10 hours.
    What is the function of SQ?
    To reduce noise of the systems, Listen offers a noise reduction technology called ListenSQ™ (on 72 MHz and 216 MHZ only). Both the transmitter and receiver must have SQ on to achieve the desired results. If you are planning to use this product with older Listen systems or equipment not manufactured by Listen, you should disable SQ.
     
    What is the warranty of Listen receivers?
    Limited lifetime warranty. The following cases will void the warranty:
    • Misuse, dropping, or any other noticeable cosmetic damage.
    • Charging alkaline batteries instead of NiMH.
    Overheating the charging process by closing the lid on the charging case.

    Troubleshooting Guide

    My receiver won't turn ON.

    • If using AC power, make sure that the power supply is plugged in.
    • If using batteries, make sure your batteries are installed with the correct polarity.
    • Your batteries may be dead.

    I can hear some static in the audio. There is only static present.

    • The receiver is not on the correct channel. Press seek until you find a clean channel.
    • There are no transmissions in the area.
    • Make sure that the transmitter is transmitting properly.
    • The receiver is out of reception range.
    • If using a rear mounted antenna, make sure that the antenna switch is in the "Ext" (external) position.
    • If using the internal antenna, make sure that the antenna switch is in the "Int" position.
    • Try using a more efficient external antenna.

    The audio is intermittent.

    • The receiver is out of reception range.
    • The receiver is not on the correct channel. Press seek until you find a clean channel.
    • The squelch setting of the receiver needs to be set to a lower setting (Default 3). This will allow weaker signals to be heard. However, the receiver may be noisier when signals are weak.
    • If using a rear mounted antenna, make sure that the antenna switch is in the "Ext" (external) position.
    • If using the internal antenna, make sure that the antenna switch is in the "Int" position.
    • Try using a more efficient external antenna.
    • Make sure that the transmitter is transmitting properly.

    The audio sounds distorted.

    • The transmitter is being over driven. Adjust the input and mix level VU meters (front panel LED level lights) so that they are not in the red or adjust so they are barely peaking into the red. Make sure that the rear panel Input 1 and Input 2 level select switches are in the correct position.
    • The receiver is turned up all the way. Turn down the volume slightly on the receiver to avoid distortion.
    • The receiver is not on the correct channel. Press seek until you find a clean channel.
    • Check the antenna and the antenna switch.

    The audio level is very low, even at full volume

    • The transmitter's rear panel Input 1 and Input 2 level select switches need to be placed in the correct position.
    • On the transmitter, adjust the input and mix level VU meters (front panel LED level lights) so that they are not in the red or adjust so they are barely peaking into the red.
    • Your input source to the transmitter is a low level audio source. On the transmitter, the "Process" mode can be turned ON to boost the signal to an appropriate level.

    My LR-600 receiver will not seek or change channels.

    • The receiver is locked. To unlock, press and hold the SEEK button for 5 seconds. The red LED on top of the unit will flash indicating the lock has been toggled and the Padlock icon will extinguish on the LCD display.
    • There are no transmissions in the area.
    • The receiver is out of reception range.

    How do I know when my batteries are low?

    • The battery icon on the LCD display will display low batteries and begin flashing when extremely low.
    • The receiver keeps turning off.
    • The audio is cutting out.

    My receiver won't charge.

    • Make sure you are using NiMH batteries.
    • Make sure the battery select switch, located on the back of the receiver, is in the NiMH position.
    • Make sure that the power cord is plugged in properly.

    The batteries in my receiver won't hold a charge.

    • It is time to replace the batteries. Listen recommends that the batteries be replaced every 3 years or after 500 charges.
    • Make sure that the receiver is actually receiving the charge. The battery icon on the LCD display will begin ramping up when charging.
    • Make sure that the unit is being turned off when not in use.

    How do I lock out channels?

    • Enter the program mode by holding the UP and DOWN buttons simultaneously for 5 seconds. The PGM icon will appear. Once in the program mode, scroll through the channels using the UP and Down buttons. Pressing the Seek button will toggle each channel in and out of Lockout. When the channel is locked out, the L/O will be displayed on the LCD indicating that channel is locked out.

    How do I adjust squelch on my receiver? Where should I have it set?

    • Hold down the SEEK button while turning the unit ON. The receiver will enter the Squelch Mode. There are 20 available squelch settings, Default is 3. 0 is no squelch and 20 is tight squelch.

    The range of my LR-600 is very short.

    • If using a remote antenna, the antenna of the transmitter needs to be better positioned. In general, the higher the antenna the more range. Refer to the user's manual for proper mounting and installation strategies for the antenna being used.
    • If using a rear mounted antenna, make sure that the antenna switch is in the "Ext" (external) position.
    • If using the internal antenna, make sure that the antenna switch is in the "Int" position.
    • The transmitter's RF Power setting needs to be increased to Full.
    • A more efficient transmitting or receiving antenna is needed.

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