Listen Technologies ListenIR iDSP Level I System LS-90-01
This ListenIR iDSP Level I System from LISTEN Technologies is a pre-configured package including everything needed for secure audio transmission of for assistive listening compliance in venues with a capacity of up to seats. The package includes the LT-84-01 ListenIR transmitter/radiator combo, two LR-4200-IR receivers, and one four-port USB charger.
| System Type | Infrared (IR) Assistive Listening System |
| Transmitter Model | Listen Technologies LT-84 |
| Receiver Model | Listen Technologies LR-4200-IR |
| Charging Case Model | Listen Technologies LA-317 |
| Transmitter Audio Inputs | 2x XLR/TRS Combo (balanced/unbalanced), 2x RCA (unbalanced) |
| Transmitter Audio Output | 2x RCA (unbalanced) |
| Transmitter Frequency Response | 63 Hz - 15 kHz (±3 dB) |
| Transmitter Signal-to-Noise Ratio | >70 dB (A-weighted) |
| Transmitter Total Harmonic Distortion (THD) | <0.2% |
| Transmitter Carrier Frequencies | 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz (selectable) |
| Transmitter Modulation | FM Wideband |
| Transmitter Coverage Area (Standalone) | Up to 10,000 sq ft (929 sq m) |
| Transmitter Power Supply | 12 VDC, 4 A |
| Transmitter Dimensions (H x W x D) | 1.75 in x 8.5 in x 9.5 in (4.4 cm x 21.6 cm x 24.1 cm) |
| Transmitter Weight | 3.2 lbs (1.5 kg) |
| Receiver Audio Output | 3.5 mm stereo jack |
| Receiver Frequency Response | 63 Hz - 15 kHz (±3 dB) |
| Receiver Signal-to-Noise Ratio | >60 dB (A-weighted) |
| Receiver Total Harmonic Distortion (THD) | <2% |
| Receiver Battery Type | Lithium-ion rechargeable |
| Receiver Battery Life | Up to 8 hours (typical) |
| Receiver Charging Time | Approximately 2.5 hours |
| Receiver Display Type | OLED |
| Receiver Dimensions (H x W x D) | 3.75 in x 2.0 in x 0.56 in (9.5 cm x 5.1 cm x 1.4 cm) |
| Receiver Weight | 1.6 oz (45 g) |
| Charging Case Capacity | 4 LR-4200-IR receivers |
| Charging Case Power Input | 12 VDC, 1 A |
| Operating Temperature Range | 32°F to 122°F (0°C to 50°C) |
| System Latency | <10 ms |
| Transmitter Rack Units | 1U (half-rack) |
| Receiver Headphone Impedance | 16-32 Ohms recommended |
| Length | 2 In. |
|---|---|
| Width | 11 In. |
| Height | 4 In. |
| Weight | 1 lbs |
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