The new LT-84 ListenIR 2-Channel Transmitter-Radiator is the only product of its kind that provides complete coverage in a wide variety of venue spaces. This advanced IR product is simple to use, cost-effective, designed to blend in to any environment, and offers twice the amount of IR power of similar products, and up to six times the coverage area.
A single unit provides up to 2,787 m² (30,000 ft²) coverage area with LR-4200-IR/LR-5200-IR receivers or 697 m² (7,500 ft²) with LR-42/LR-44 receivers in single channel mode, ensuring that the entire room has coverage without gaps or null spots.
The LT-84 is the first IR system with Expansion Radiators (LA-141) that implement delay compensation—no signal cancellation drop outs.
It is the only two channel Transmitter-Radiator with up to four frequencies; 2.3 MHz, 2.8 MHz, 3.3 MHz, or 3.8 MHz, providing flexibility in the field and eliminating the need to purchase a specific frequency based transmitter-radiator.
In addition four (4) Expansion Radiators (LA-141) can be added for additional coverage, when mounted within 30.48 m (100 ft.) cable length from the LT-84.
A single CAT-5e cable carries both power and signal to the LA-141 Expansion Radiators making it a true one-cable connection.
Easy installation includes mounting hardware for wall, ceiling, or table mounting and a multi-lingual legislative compliance sign. Flexible frequency selection and input connectivity minimizes on-site installation hassles.
| Audio | |
|---|---|
| Frequency Response | 20 Hz - 20 kHz (+/- 1 dB) Line Input63 Hz - 15 kHz (+/- 3 dB) System Specification (Wireless End-to-End with LR-44) |
| Signal-to-Noise Ratio | > 70 dB (SNR) Line Input> 60 dB (SNR) System Specification (Wireless End-to-End with LR-44) |
| Microphone Input | Two (2) 3.5 mm (0.14 in.) Tip/Sleeve Connector, -30 dBu Nominal Input, +14 dB Headroom, Impedance 4.4k Ohms, 5 VDC Bias Supply |
| Total Harmonic Distortion | < 0.1% (THD) Line Input< 2% (THD) System Specification (Wireless End-to-End with LR-44) |
| Unbalanced Line Input | Stereo/Mono Input. Two (2) Dual (RCA) Phono connectors, Unbalanced, -10 dBu Nominal Input, +14 dB Headroom, Impedance 10k Ohms |
| Balanced Line Input | Mono Input. Two (2) Phoenix Type Connector, Balanced, + 4 dBunominal Input, +14 dB Headroom, Impedance 100k Ohms |
| Controls | |
| Power Switch | Three (3) Position Switch - Power OFF, Power ON-Indicator Lights OFF, Power ON-Indicator Lights ON |
| Carrier Frequency Selection | Two (2), Four (4) Position Rotary Switches (2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz) |
| Level Control Knob | Two (2) Audio Taper Rotary Potentiometer, Counter-clockwise Decreases Input Mix Level, Clockwise Increases Input Mix Level |
| Indicators | |
| Power Supply LED | Green LED on In-Line Power Supply Indicates AC Power is Applied |
| Audio Level Indicators | Two (2) Green LEDs, Two (2) Red LEDs, Green LED indicates Audio Presence and Red LED Indicates Peaks in the Audio |
| RJ-45 Amber LED | Solid Amber Indicates Carrier is Present and IR is Being Transmitted |
| RJ-45 Green LED | Solid Green Indicates Power is Applied to Unit, Flashing Indicates Unit has Entered Power Save Mode |
| RF | |
| Carrier Frequencies | 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz, Selectable |
| Number of Channels | Two (2) Channels, Selectable Carrier Frequency |
| Frequency Accuracy | +/- .005% Stability 0 to 50 °C |
| Transmitter Stability | 50 PPM |
| Modulation | FM Wideband, ±50kHz Deviation Max, 50 ?S Pre-Emphasis |
| Power Save Mode | Carrier Will Shut Off When No Audio is Present For 15 Minutes on Both Channels to Preserve Radiator Life |
| Expansion Link Output | Two (2) RJ-45 Connectors - Provides RF Signal and Power, CAT-5e cable 24 AWG, 100 ft. Maximum Cable Length, two (2) LA-141s Per Output Connector |
| IR | |
| Coverage Area | 2,787 m² (30,000 ft²) Single Channel with LR-4200-IR/LR-5200-IR Receivers or 697 m² (7,500 ft²) Single Channel with LR-42/LR-44 Receivers |
| IR Emitter Power | 1.49 W |
| Power | |
| Power Supply Input | 100-240 VAC, 50-60 Hz |
| Power Supply Output | 12 VDC, 4 A, 48 W |
| Power Supply Connector | 2.5 mm ID Barrel Connector, Center Positive |
| Power Output | Two (2) RJ-45 Connectors. Providing Power and RF Signal for Up to Two (2) LA-141 Expansion Radiators on Each Output |
| Power Supply Type | In-Line Switching Mode Power Supply, Listen Part Number LA-210 |
| Power Supply Line Cord | IEC Line Cord, North America Type B (LT-84-01), Asia and UK Type G (LT-84-02), Euro Type C (LT-84-03), Australia Type I (LT-84-04) |
| Environmental | |
| Temperature - Operation | 14 °F (-10 °C) to +104 °F (40 °C) |
| Temperature - Storage | -4 °F (-20 °C) to +122 °F (50 °C) |
| Relative Humidity | 0 to 95% Relative Humidity, Non-Condensing |
| Compliance | |
| Standards | FCC part 15, ICS-03, CE, UL, CUL, C-Tick, CCC, PSE, KC, GS, RoHS, WEEE |
| Power Supply Compliance Marks | CUL, UL, CE, CCC, C-Tick, KC, PSE, GS, FCC, RoHS |
| Physical | |
| Color | Black with White Silk Screening |
| Mounting | Can be Mounted on A Wall, Ceiling, or Table with Provided Hardware (Screws and Hollow Wall Anchors Not Provided). Optional LA-347 Wall Box Mounting Plate is Available for Mounting to a Standard Single Gang Electrical Box. |
| Dimensions (H x W x D) | 1.5" (3.81 mm) x 10.7" (27.2 mm) x 4.1" (10.5 mm) |
| Unit Weight | 0.8 lbs (0.4 kg) |
| Unit Weight with Power Supply | 1.8 lbs (0.8 kg) |
| Shipping Weight) | 3.4 lbs (1.54 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
