Intelligent DSP IR Receiver

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.

• System Distortion: < 2% total harmonic distortion (THD) at 80% deviation
• Audio Output Jacks: Two (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 Response: 63 Hz - 15 kHz (±3 dB)
• System Signal to Noise Ratio: > 60 dB

• User Controls: Power on/off and volume up/down
• Programming: Via software and USB port, Auto Seek, Jack Sense, Squelch, Auto Power, Auto Off, Stereo, Brightness, Channel Name
• Set-up Controls: Press and hold up/down volume buttons for 5 seconds to enter channel adjust, use up/down to select channel

• Display: OLED - Channel designation, battery level, unit number, charging status, volume status
• LED: Flashes when batteries are low or to indicate charging, solid when fully charged

• Carrier Frequencies: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
• Number of Channels: Four (4) selectable channels
• Frequency Accuracy: ± .005% stability 32 to 122 ºF (0 to 50 ºC)
• Modulation: FM Wideband, ±50 kHz deviation max, 50 uS de-emphasis

• Coverage Area: 30,000 ft² (2787 m²) single channel with LT-84/LA-141 or 40,000 ft² (3716 m²) single channel with LT-82/LA-140
• Squelch: Programmable in 20 steps, automatic on loss of IR signal
• Power Save Mode: Turns unit off after a specified time of no IR signal, default is 30 minutes
• Sensitivity: Better than one (1) nW/cm2 @40 dB SNR

• Power Supply: Micro USB connector, 5 V, 500 mA
• Battery Type: Lithium Ion
• Battery Life: 8 Hours of typical use
• Battery Charging Time: Fully charged in 2.5 Hours

• Colour: Flat Black
• Unit Weight with Batteries: 2.8 oz. (79.4 g)
• Shipping Weight: 3.5 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 Weight: 1.9 oz. (53.9 g)
• Dimensions with Belt Clip: 3.75 x 2.0 x 0.80 in. (9.6 x 5.0 x 2.1 cm)

• Temperature - Operation: 14 to 104 ºF (-10 to 40 ºC)
• Temperature - Storage: (-)4 to 122 °F (-20 to 50 °C)
• Relative Humidity: 0 to 95% relative humidity, non-condensing

• Standards: FCC Part 15, ICS-03, CE, RoHS, WEEE, ADA 706, CBC 11B-706