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Intelligent DSP IR Receiver

Item Code: LR-4200-IR

The LR-4200-IR receiver from Listen Technologies offers outstanding audio clarity and quality with the best range and reception in its class.

Part of our Intelligent Digital Signal Processing (iDSP) line, the LR-4200-IR is the smallest device of its kind, resulting in a compact unit that won’t burden the end user. An integrated neck loop/lanyard makes each receiver easy to wear, and the DSP loop driver offers an improved listening experience for anyone with a T-coil-equipped hearing aid. Dual 3.5mm output jacks also allow receivers to be shared between users.

Each receiver is also equipped with a micro USB connection, making it easy for venues to charge and update the units via any standard USB port.

Extended speaking sessions, presentations and more can be challenging for other devices, but the LR-4200-IR incorporates advanced rechargeable batteries that offer long life and reliable power. Charge status, along with channel information and volume level, are easy to read on the integrated OLED display.

From corporate environments to conference proceedings and beyond, the LR-4200-IR is an outstanding receiver choice for any venue looking to offer convenient, reliable assistive listening.

  • High performance IR receiver offering best-in-class sensitivity and range
  • Integrated neck loop/lanyard with DSP loop driver for an enhanced T-coil listening experience
  • Smallest device of its kind makes it easier to wear and use and for venues to dispense, store and maintain
  • OLED display showing channels, battery status, channel status, volume level, and more
  • Lanyard and belt clip options offer convenient and discreet choices for the end user
  • Advanced rechargeable battery technology eliminates the costs and hassles associated with frequent battery replacement
  • Designed for single-channel applications
System Distortion< 2% total harmonic distortion (THD) at 80% deviation
Audio Output JacksTwo (2) 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm, accepts mono or stereo phone plug or LA-430 Intelligent Ear Phone/Neck Loop Lanyard
System Frequency Response63 Hz – 15 kHz (±3 dB)
System Signal to Noise Ratio> 60 dB
User ControlsPower on/off and volume up/down
ProgrammingVia software and USB port, Auto Seek, Jack Sense, Squelch, Auto Power, Auto Off, Stereo, Brightness, Channel Name
Set-up ControlsPress and hold up/down volume buttons for 5 seconds to enterchannel adjust, use up/down to select channel
DisplayOLED – Channel designation, battery level, unit number, charging status, volume status
LEDFlashes when batteries are low or to indicate charging, solid when fully charged
Carrier Frequencies2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of ChannelsFour (4) selectable channels
Frequency Accuracy± .005% stability 32 to 122 ºF (0 to 50 ºC)
ModulationFM Wideband, ±50 kHz deviation max, 50 uS de-emphasis
Coverage Area30,000 ft² (2787 m²) single channel with LT-84/LA-141 or 40,000 ft² (3716 m²) single channel with LT-82/LA-140
SquelchProgrammable in 20 steps, automatic on loss of IR signal
Power Save ModeTurns unit off after a specified time of no IR signal, default is 30 minutes
SensitivityBetter than one (1) nW/cm2 @40 dB SNR
Power SupplyMicro USB connector, 5 V, 500 mA
Battery TypeLithium Ion
Battery Life8 Hours of typical use
Battery Charging TimeFully charged in 2.5 Hours
ColorFlat Black
Unit Weight with Batteries2.8 oz. (79.4 g)
Shipping Weight3.5 oz. (99.2 g) with a 1 lbs. (0.45 kg) minimum
Dimensions (H x W x D)3.75 x 2.0 x 0.64 in. (9.6 x 5.0 x 1.7 cm)
Unit Weight1.9 oz. (53.9 g)
Dimensions with Belt Clip3.75 x 2.0 x 0.80 in. (9.6 x 5.0 x 2.1 cm)
Temperature – Operation14 to 104 ºF (-10 to 40 ºC)
Temperature – Storage(-)4 to 122 °F (-20 to 50 °C)
Relative Humidity0 to 95% relative humidity, non-condensing
StandardsFCC Part 15, ICS-03, CE, RoHS, WEEE, ADA 706, CBC 11B-706

One (1) LR-4200-IR Intelligent DSP IR Receiver*

*The LR-4200-IR comes with a quick start guide and a non-proprietary field replaceable Lithium-ion battery.