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  • 58336_Listen-Technologies-LT-82-ListenIR-1-Channel-Transmitter_ALT02sqr
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Listen Technologies LT-82 ListenIR 1-Channel Transmitter | Standard

Listen Technologies LT-82 ListenIR 1-Channel Transmitter | Standard

SoundPro Item: 58336 | Part Number: LT-82-01

$943.00
$1,101.00 $943.00
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MSRP: $1,101.00 | MAP: $943.00

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  • Expandable Four-Channel Architecture Supports Multi-Room Or Multi-Language Deployments
  • Dual RJ-45 Power Outputs Eliminate External Supply Requirements For Radiator Installations
  • Balanced XLR Combo Input With Switchable Phantom Power Accepts Mixer And Microphone Sources Directly
  • Four Selectable RF Carrier Frequencies Enable Interference-Free Operation In Adjacent Spaces
  • Front-Panel LCD And Multi-Segment Metering Confirm Audio Levels And Carrier Status During Setup
  • Integrated Compression And Contour Processing Optimize Speech Intelligibility Without External Equipment
  • Half-Rack Width Allows Dual-Unit Mounting In Single Rack Space For Compact Equipment Rooms
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The LT-82 ListenIR transmitter serves as the foundation for professional infrared assistive listening installations in theaters, houses of worship, conference centers, and interpretation environments. Operating in mono or stereo modes, it supports expandable multi-channel configurations by linking up to four units for simultaneous language or program distribution. Each transmitter powers and communicates with LA-140 radiator units through standard CAT-5 infrastructure, simplifying installation while maintaining RF isolation from wireless microphone systems.

Balanced XLR/combo and unbalanced phono inputs accommodate mixer feeds, microphones with phantom power, and consumer sources. Built-in compression, contour filtering, and adjustable input sensitivity optimize speech intelligibility and music reproduction across varied program material. Front-panel LCD monitoring and 10-segment metering provide real-time confirmation of audio levels and RF carrier status during setup and operation.

Half-rack form factor enables single or dual-unit rack mounting for fixed installations. Automatic carrier shutoff after 30 minutes of silence extends radiator lifespan in facilities with intermittent use. Four selectable carrier frequencies prevent crosstalk in adjacent spaces or multi-room deployments, making the LT-82 suitable for both single-venue and campus-wide assistive listening architectures.

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Specifications

Included Items
Includes
One (1) LT-82 ListenIR 1-Channel Transmitter One (1) LA-205 30 VDC Extension/Replacement Power Supply for LA-140/LT-82 One (1) LA-89 Interconnection Coaxial Cable One (1) Quick Reference Card
Audio
Frequency Response
63 Hz - 15 kHz (+/- 3 dB)
Signal-to-Noise Ratio
Mono: > 60 dBStereo: > 52 dB
System Distortion
< 2% total harmonic distortion (THD)
Audio Input 1
Mono Input (Rear Panel). Female-XLR and 1/4 in. combo connector, balanced, 0/-55 dBu (line/mic) nominal input level adjustable; +21/-30 dBu (line/mic) maximum input level; impedance 20k/1k ohms (line/mic); phantom power +12 VDC
Audio Input 2
Stereo or Mono Input (Rear Panel). Two (2) Phono connectors, unbalanced, -10/+10 dBu nominal input level adjustable, +30 dBu maximum, impedance 100k
Audio Processing
Compression can be turned on/off.
Contour
Cuts and boosts frequencies above 5 kHz
Monitor Output
Front panel. One (1) 3.5 mm (0.14 in.) connector, unbalanced, adjustable output level, +7 dBu maximum, impedance 10 ohms. 100 mW, 32 ohms
Output/s
Input 1 and Input 2 Mixed Output (Rear panel). Two (2) Phono connectors, unbalanced, -10 dBu nominal output level, +19 dBu maximum, impedance 10 ohms
Controls
Programming
Stereo on/off, Processing on/off
Front Panel
Power, Test Tone on/off, Channel up/down, Input Level, Transmit Level, Contour, Monitor Level
Rear Panel
Input 1 Level (Line, Mic, Mic-Phantom Power), Input 2 Level (-10/+10 dBu)
Internal Adjustments
Compression ratio for audio processor. Slope adjustable from 1:1 to 4:1. Default 2:1
Indicators
LCD
Channel designation, lock status, RF Carrier, programming (front panel)
Unit Power
Red LED illuminates when the unit is powered up (front panel)
Input 1, Input 2, Transmit Level
Indicates Input 1, Input 2, and Transmit audio levels. 10 segment LED's (8 green, 2 red)
Stereo
Indicated by a green LED when on (front panel)
Processing
Indicated by a green LED when on (front panel)
RF Carrier
Indicates carrier is active on the LCD Display (front panel)
Test Tone
Red LED illuminates when test tone enabled (front panel)
RF
Input/s
One (1) BNC connector, for connection from additional transmitter(s). 50 mV, 50 ohm, -15 dBm
Output/s
Two (2) BNC connectors, for connection to radiator(s) and/or additional transmitter(s). 50 mV, 50 ohm, -15 dBm
Carrier Frequencies
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels
Four (4) channels. Selectable one (1) channel per transmitter (mono or stereo)
Frequency Accuracy
+/- .005% stability 0 to 50 °C
Carrier Shut Off
Carrier will shut off when no audio is present for 30 minutes to preserve radiator life.
Transmitter Stability
50 PPM
Power
Power Supply
In-line switching mode power supply, Listen part number LA-205
Power Supply Input
100-240 VAC, 47-63 Hz
Power Supply Output
30 VDC, 1.5 A
Power Supply Connector
RJ-45
Power Output
Two (2) RJ-45 jacks. For remote powering up to two (2) radiators
Dimensions
Width
8.50 in. (21.5 cm)
Height
1.75 in. (4.5 cm)
Depth
9.13 in. (23 cm)
Weight
Weight
2.6 lbs. (1.18 kg)
Unit Weight with Power Supply
3.8 lbs. (1.72 kg)
Construction
Color
Dark Grey
Rack Mounting
One (1) rack space high (1U), 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in a single rack space. Optional Rack mount (LA-326) not included.
Power 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)
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
Certifications
Standards
FCC Part 15, Industry Canada, CE, RoHS, UL
Shipping
Shipping Weight
6.0 lbs. (2.7 kg)

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