Listen Technologies LT-84-01 / LT-84-01-D ListenIR 2-Channel Transmitter/Radiator Combo Variants:
Vendor: Listen Technologies
Available
Listen Technologies LT-84-01 / LT-84-01-D ListenIR 2-Channel Transmitter/Radiator Combo
Variants:
LT-84-01 - w/o Dante
LT-84-01-D - w/ Dante
The Listen Technologies' LT-84-01 / LT-84-01-D ListenIR 2-Channel Transmitter/Radiator Combo provides venues, businesses, government agencies, and more with an affordable and easy-to-use assistive listening solution.
The LT-84 can deliver a clear, dependable signal across 2,787 square meters with twice the IR power and up to six times the coverage area of comparable devices (30,000 square feet). Users in every mid-sized location, from the boardroom to the courtroom and beyond, are guaranteed an uninterrupted audio performance thanks to this signal range. The LT-84 is also the first infrared assistive listening system to feature expansion radiators (LA-141), which provide delay compensation to ensure that there are no signal cancellation dropouts. Up to four (4) expansion radiators (LA-141) can be added to the system to offer additional coverage (when mounted within 30.48 m [100 ft.] from the unit).
In addition, the LT-84 is the only two-channel transmitter-radiator that can transmit on up to four different frequencies (2.3 MHz, 2.8 MHz, 3.3 MHz, or 3.8 MHz). This flexibility in the field makes setup and operation even easier, while also eliminating the need to purchase separate, frequency-specific transmitter-radiator units. With the included mounting hardware, and the flexible frequency selection and input connectivity, the LT-84 is an ideal way to add infrared assistive listening capabilities and ADA compliance to your business or venue.
Includes:
One (1) LT-84 ListenIR 2-Channel Transmitter/Radiator Combo
One (1) LA-507 XLR-F to Terminal Block Cable
One (1) LA-210 12 VDC Universal Power Supply/Power Cord
One (1) LA-344 Flexible Mounting Hardware
Two (2) Phoenix Type Connectors
One (1) LA-303 Multi-Lingual Assistive Listening Notification Sign
One (1) Quick Start Guide
Included only in w/ Dante Variant:
One (1) LA-465 Dante 1 Channel Output XLR Adapter (POE required)
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 dBu nominal 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 F (LT-84-03), Australia Type I (LT-84-04) |
Physical
Color | Black with White Silk Screening |
Unit Weight with Power Supply | 1.8 lbs. (0.8 kg) |
Shipping Weight | 3.4 lbs. (1.54 kg) |
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 x 10.7 x 4.1 in. (3.81 x 27.2 x 10.5 cm) |
Unit Weight | 0.8 lbs. (0.4 kg) |