Listen Technologies LT-84 ListenIR 2-Channel Transmitter/Radiator Combo

SKU: LTLT8401 MFR: LT-84-01
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Key Features

  • Crystal-clear audio via ListenIR, perfect for assistive listening in any venue.
  • Ensure seamless presentations with a reliable 2-channel transmitter/radiator combo.
  • Wide coverage area up to 30,000 ft with Listen Technologies receivers for large spaces.
  • Easy setup with included mounting hardware for wall, ceiling, or tabletop use.
  • Selectable carrier frequencies ensure optimal audio clarity, minimizing interference.
  • Enhance accessibility with this Listen Technologies assistive listening system.
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Listen Technologies LT-84 Specifications

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

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  • 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

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  • 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

  • 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 Degree 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

  • Coverage Area

    2,787 m 2 (30,000 ft 2) single channel with LR-4200-IR/LR-5200-IR receivers or 697 m 2 (7,500 ft 2) single channel with LR-42/LR-44 receivers

  • IR Emitter Power

    1.49 W

  • 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

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  • Temperature - Operation

    14 Degree F (-10 Degree C) to +104 Degree F (40 Degree C)

  • Temperature - Storage

    -4 Degree F (-20 Degree C) to +122 Degree F (50 Degree C)

  • Relative Humidity

    0 to 95% relative humidity, non-condensing

Compliance

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  • 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

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  • Color

    Black with White Silk Screening

  • Counting

    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.

  • Compatibility

    LR-42, LR-44, LPT-A117, LA-141, LR-4200-IR, LR-5200-IR, LR-4200-IR-P1, LR-5200-IR-P1, LP-40-IR-01, LP-41-IR, LP-50-IR, LP-51-IR, LR-X200-IR

  • Dimensions (H x W x D)

    1.5 x 10.7 x 4.1" (3.81 x 27.2 x 10.5cm)

  • Weight

    0.8 lb (0.4kg)
    with Power Supply: 1.8 lb (0.8kg)

  • UPC Code

    819267023369

About Listen Technologies LT-84

Just imagine the power of a high-quality, durable, and innovative audio solution in your hands. The LT-84 ListenIR 2-Channel Transmitter/Radiator Combo, a patented product (Pat. 9,712,246) from the reputable Listen Technologies, is designed to provide venues, businesses, and government agencies with a user-friendly and affordable assistive listening solution.

This compact device offers double the infrared power and up to six times the coverage area compared to similar products on the market. It can transmit a crystal-clear, reliable signal across an impressive area of 2,787 square meters or 30,000 square feet. This extensive signal range ensures that users in any mid-sized space, from corporate boardrooms to bustling courtrooms, can enjoy an uninterrupted, superior audio performance.

The LT-84 is the first of its kind in the infrared assistive listening systems to feature expansion radiators (LA-141), providing delay compensation to prevent any signal cancellation dropouts. You can add up to four (4) expansion radiators (LA-141) to the system for additional coverage, provided they are mounted within 30.48 meters (100 feet) from the unit.

What sets the LT-84 apart is its unique ability to transmit on up to four different frequencies (2.3 MHz, 2.8 MHz, 3.3 MHz, or 3.8 MHz). This flexibility simplifies setup and operation, eliminating the need to purchase separate, frequency-specific transmitter-radiator units.

The LT-84 comes with included mounting hardware, flexible frequency selection, and input connectivity, making it an ideal solution for adding infrared assistive listening capabilities and ADA compliance to your business or venue. Experience the difference with the LT-84 ListenIR 2-Channel Transmitter/Radiator Combo, a testament to Listen Technologies' commitment to superior audio solutions.

Listen Technologies LT-84 Features

  • Affordable, effective, and expandable solution ideal for small to mid-size spaces such as classrooms, courtrooms, boardrooms, and more
  • Multiple frequency options offer additional flexibility and simplicity during installation and setup
  • Offers gapless coverage up to 2,787 square meters (30,000 square feet)
  • Can be expanded with up to four (4) LA-141 expansion radiators for additional coverage area
  • One-cable design utilizes a single CAT-5e to carry both power and signal to LA-141 expansion radiators
  • Multiple input options for easier setup and operation

Product Documents

User Manual

Key Features

  • Crystal-clear audio via ListenIR, perfect for assistive listening in any venue.
  • Ensure seamless presentations with a reliable 2-channel transmitter/radiator combo.
  • Wide coverage area up to 30,000 ft with Listen Technologies receivers for large spaces.
  • Easy setup with included mounting hardware for wall, ceiling, or tabletop use.
  • Selectable carrier frequencies ensure optimal audio clarity, minimizing interference.
  • Enhance accessibility with this Listen Technologies assistive listening system.

What's in the box:

  • LT-84 ListenIR 2-Channel Transmitter/Radiator Combo
  • LA-210 12 VDC Universal Power Supply/Power Cord
  • LA-344 Flexible Mounting Hardware
  • 2x Phoenix Type Connectors
  • LA-303 Multi-Lingual Assistive Listening Notification Sign
  • Quick Start Guide
  • Listen Technologies 1 Year Limited Warranty