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Overview

Listen’s LR-100 Stationary RF Receiver/Power Amplifier is a stationary auditory assistance receiver with a built-in power amplifier. When used with a Listen transmitter, the LR-100 can deliver high quality audio for use in a variety of locations and applications — most commonly with a wireless audio distributed system. This unit has Listen’s signature Look&ListenTM LCD Display showing channel, lock, and battery level. A security cover protects auxiliary and receiver volume, adjustable squelch and trim controls. It has an balanced or unbalanced speaker wire output options. Multiple input options give this unit great flexibility. It’s powered by a 15 VAC/1000mA power input or 12 VDC battery. An antenna is needed for reception.

Includes

One (1) LR-100 Stationary RF Receiver/Power Amplifier
One (1) LR-100 manual
One (1) LA-201 15 VAC Power Supply
One (1) LA-124 90° Helical Antenna (216 MHz)
One (1) Hex Wrench

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
  • Programmability – Unneeded channels can be locked so this receiver will access only one or more channels of your choice
  • Look & Listen™ LCD shows channel, battery status, signal strength and programming information
  • 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
  • Drop in charging contacts for any of Listen’s many charging cases or a charging plug on the side of the unit
  • Adjustable squelch control
  • Selectable audio output
  • Multiple input options
  • Remote control capabilities
  • Optional 12 VDC input
  • Many accessory options make Listen products ideal for a wide range of applications
Configurations & Architectural Specs

Configurations

LR-100-072 Stationary RF Receiver/Power Amplifier (72 MHz)
LR-100-216 Stationary RF Receiver/Power Amplifier (216 MHz)

Architectural Specs

The Stationary RFReceiver/Power Amplifier shall be capable of receiving on 57 wide and narrow band channels in the frequency ranges of either 72 MHz or 216 MHz. The receiver shall be programmable to electronically lock out unneeded channels. The device shall have an adjustable squelch with an LED indication. The device shall have an audio frequency response of 50 Hz to 15k Hz, ‘±3 dB at 72 MHz, or of 50 Hz to 10 kHz, ‘±3 dB at 216 MHz. The signal to noise ratio shall be 80dB or greater. The device will have an integrated 15 watt power amplifier capable of driving an 8 ohm speaker. The device shall be rack mountable and shall have the capability of a remote antenna. The device shall incorporate an LCD display that indicates channel and RF signal strength. The Listen LR-100 is specified.

Product Specifications
SpecificationLR-100-216

Audio

Frequency ResponseSystem: 63 Hz - 10 kHz (±3 dB)
Signal-to-Noise Ratio80 dB SQ enabled, 50 dB SQ disabled (A Weighted)
Distortion< 2% total harmonic distortion (THD) at 80% deviation
Input/sOne (1) female XLR-1/4 in combo connector, balanced, 0 dBu nominal input level adjustable, +13 dBu maximum, impedance 600 ohmTwo (2) phono connectors, unbalanced, -10 dBu nominal input level adjustable, +7 dBu maximum, impedance 10k ohm band, 40 narrow band
Output/sOne (1) male XLR, balanced, 0 dBu nominal output level, +16 dBu maximum, impedance 2k/10 Ohms (line/mic)Two (2) phono connectors, unbalanced, -10 dBu nominal output level, +2 dBu maximum, impedance 2k ohmOne (1) 3.5mm stereo connector, unbalanced, adjustable output level, +7 dBu maximum, impedance 10 ohmOne (1) detachable terminal block, bridged, adjustable output level, 15/10 watts (peak/RMS) continuous power with 4 ohm load

Controls

User ControlsFront: Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume controlRear: Audio output select (RX Only, RX + AUX, RX or AUX),Speaker (Output, Aux), switchable balanced output levelRemote Controls: Eight (8) position detachable terminal block, channel up, channel down, mute
ProgrammingUnit can be programmed so that only desired channels are displayed to the user, channel selection can be locked by holding the SEEK button 5 seconds.

Indicators

LCDChannel designation, lock status, RF power level, programming (front panel)
Power LEDIndicated by a green LED when on (front panel)
VU MeterFour (4) LED (three green, one red)
RF PowerIndicated on the LCD (low, mid, high)
SquelchGreen LED illuminates when the unit is squelched
MuteGreen LED illuminates when the output audio is muted

RF

Frequency Range216.025 - 216.987 MHz
Number of Channels57 (19 wide band, 38 narrow band)
Sensitivity.6uV typical, 1 uV maximum for 12 dB SINAD
Frequency Accuracy± .005% stability +32 ºF to +122 ºF (0 ºC to +50 ºC)
Antenna TypeLA-124 90° Helical Antenna (216 MHz)
Antenna ConnectorBNC

Power

Power Supply Input120 VAC, 60 Hz, 19 Watts
Power Supply Output15 VAC, 1 Amp
Power Supply Connector.02 in (5.0 mm) OD, .01 in. (2.5 mm) ID, barrel type
Optional Battery12VDC, connected via terminal block
Optional Battery ChargingTrickle charge of optional 12VDC battery through terminal block connection
Power Supply TypeIn line power supply, Listen part number LA-201

Physical

ColorDark Grey with white silk screening
Unit Weight with Power Supply4.2 lbs. (1.9 kg)
Shipping Weight7.0 lbs. (3.2 kg)
Rack MountingOne (1) rack space height, 1/2 rack space wide, one (1) or two (2) receivers can be mounted in one rack space, optional rack mount (LA-326)
Dimensions (H x W x D)1.75 x 8.50 x 9.13 in. (4.5 x 21.5 x 23 cm)
Unit Weight2.8 lbs. (1.3 kg)

Environmental

Temperature - Operation-10 ºC (14 ºF) to +40 ºC (104 ºF)
Temperature - Storage-20 ºC (-4 ºF) to +50 ºC (122 ºF)
Relative Humidity0 to 95% Relative Humidity, non condensing

Compliance

Power Supply ComplianceUL Listed
StandardsFCC Part 15, Part 90, Industry Canada
Used With
Accessories
FAQ
QWhat is the function of SQ?
ATo reduce noise of the systems, Listen offers a noise reduction technology called ListenSQ™. 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.
QHow many LR-100's can I use in a system?
AAs many as you need, the number is endless.
QCan I interface this to an amplifier or powered speaker?
AYes, both.
QDo I run the speakers in series or parallel?
AIt's your choice. However minimum impedance attached to LR-100 speaker amplifier must be greater than 4 ohms.
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