High performance IR receiver offering best-in-class sensitivity and range
$192.00
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The LR-4200 receiver is one of Listen Technologies’ new generation of personal listening products, iDSP or Intelligent Digital Signal Processing.
With Listen’s unique DSP SQTM noise reduction technology, users experience 20 dB less noise and hiss than any other listening device. Advanced green battery technology dramatically reduces costs of ownership and hassles while reducing the number of batteries in landfills. A field replaceable Lithium-ion battery is included with the unit. The integrated neck loop / lanyard with DSP loop driver, improves the listening experience for T-coil users. iDSP is the smallest device of its kind, making it easier to wear and easier for venues to dispense, store and maintain.
The LR-4200 has an OLED display to program channel names, monitor battery status, channel status, and charge activation. Connect the iDSP neck loop/lanyard or ear phones via two 3.5 mm output jacks (receivers can be shared). The Micro USB connection is used with free iDSP software for charging, set up, programming, inventory management and firmware updates.
The result is an exceptional listening experience in places where it’s difficult to hear, like: theaters, lecture halls, concert venues, houses of worship, and more.
Includes
One (1) LR-4200 Intelligent DSP RF Receiver (72 MHz)*
One (1) Quick Start Guide
*The LR-4200 comes with a non-proprietary, field replaceable Lithium-ion battery.
Highlights
User Manuals:
Audio
| 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 |
Controls
| 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 enterchannel adjust, use up/down to select channel |
Indicators
| 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 |
RF
| 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 |
IR
| 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
| 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 |
Physical
| Color | 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) |
Environmental
| 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 |
Compliance
| Standards | FCC Part 15, ICS-03, CE, RoHS, WEEE |
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