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9 November 2024

LISTEN TECHNOLOGIES LT-82 IR TRANSMITTER Single channel, four frequencies

Stock code
93-7775
Brand
Listen Technologies
Model number
  • LT-82-02
  • LT-82
LISTEN TECHNOLOGIES LT-82 IR TRANSMITTER Single channel, four frequencies
LISTEN TECHNOLOGIES LT-82 IR TRANSMITTER Single channel, four frequenciesLISTEN TECHNOLOGIES LT-82 IR TRANSMITTER Single channel, four frequencies

Order

VAT / Delivery
$1,079.44
each (ex. VAT)
Ordered on demand, available in 3‑4 weeks. Need it sooner? Call us
RoHS Compliant

LISTEN TECHNOLOGIES INFRARED SYSTEMS - ListenIR series

ListenIR infrared products from US based Listen Technologies have been designed for assisted listening, audio description and language interpretation in locations such as boardrooms, courtrooms, training rooms, classrooms, museums and theatres. The systems work by transmitting/receiving a modulated beam of infrared light in 'line of sight' which is converted from/to audio for a listener to hear via headphones or hearing loop lanyard.

SYSTEM PACKAGES

A selection of ListenIR complete infrared system solutions from Listen Technologies, suitable for a variety of room sizes such as classroom, conference rooms, boardrooms, or jury deliberation suites.

LS-88

Designed for small to medium spaces where the room capacity is around 50 people. With flight case.

LS-88 comprises of:

  • 1x LT-84 ListenIR Transmitter/Radiator Combo
  • 2x LR-4200 IR Intelligent DSP IR Receiver
  • 2x LA-430 Intelligent Ear Phone/Neck Loop Lanyard
  • 2x LA-401 Universal Ear Speaker
  • 1x LA-277 Conference Microphone
  • 1x LA-338 Table Top Tripod
  • 1x LA-346 Carrying Case
  • 1x LA-423 4-Port USB Charger

LS-90

Designed for small to medium spaces where the room capacity is around 50 people.

LS-90 comprises of:

  • 1x LT-84 ListenIR Transmitter/Radiator Combo
  • 2x LR-4200-IR Intelligent DSP IR Receiver
  • 2x LA-430 Intelligent Ear Phone/Neck Loop Lanyard
  • 2x LA-401 Universal Ear Speaker
  • 1x LA-423 4-Port USB Charger

TRANSMITTERS

LT-82 Transmitter

ListenIR LT-82 is a single channel transmitter that is capable of operating in either mono or stereo modes. The stationary infrared transmitters can be daisy-chained together to transmit up to four channels simultaneously on 2.3/2.8/3.3/3.8MHz. The channel selection can be locked by the engineer to avoid tampering whilst a timer shuts off the carriers after 30 minutes when no audio is present at the transmitter. With an audio frequency response of 63Hz to 15kHz, +/-3db, the transmitter allows a single balanced 3-pin XLR input along with unbalanced RCA (phono) inputs. With automatic gain control and limiting, the transmitter has controls for input level, transmission level, contour level, and stereo on/off. LT-82 also provides power to up to two LA-140 radiators. via CAT-5e cable.

Included accessories: LA-205 30V DC power supply, LA-89 coaxial cable, quick start guide.

Dimensions (HxWxD): 45 x 215 x 230mm. Weight: 1.18kg

LT-84 Transmitter/Radiator

LT-84 is a two-channel infrared transmitter and radiator combined within a single piece of hardware. It can provide line of sight coverage of up to 30,000 square feet (2787square metres) when combining with the LR-4200-IR belt pack receiver. The range can be improved by linking up to four LA-141 expansion transmitters, a maximum of two per expansion link output, by Cat-5e cable. The user can select one of four FM wide band frequencies for each of the two channels. Available frequencies include 2.3MHz, 2.8MHz, 3.3MHz, and 3.8MHz. The radiator can be mounted in a number of ways including on walls, ceiling or table using the included LA-344 mounting hardware kit.

The front panel has no controls, only the infrared radiator which is housed behind the infrared transparent panel. The rear panel has all user controls and audio/data inputs and outputs for the two channels and links. Both channels have a 3.5mm balanced jack input suitable for electret microphones, dual unbalanced RCA (phono) inputs for an audio input from other hardware such as CD player or DAB radio, and a 3-pin Phoenix style detachable terminal block connector for a balanced audio input. Controls for each channel include a rotary level control with LED level indicators, recessed rotary frequency selector and sliding transmission on/off control. A separate sliding switch situated next to the 12V DC power supply input controls power; it has three positions, off, on with LED status lights, on with no LED status lights, the latter for situations where flashing LEDs may cause distraction. Two RJ-45 output links can be used to connect option LA-141 expanders with a maximum connection cable length of 30m.

Included accessories: LA-210 12V DC power supply, LA-344 mounting hardware, 2x Phoenix type connectors, quick start guide, LA-303 signage.

Dimensions (HxWxD): 38.1 x 272 x 105mm. Weight: 0.4kg.

LA-140 Radiator

A compact, stationary radiator/emitter that is available in either grey or white finish and designed for use with the LT-82 transmitter to expand the coverage. The radiator can be mounted in vertical or horizontal orientation, and the included mounting hardware allows for wall, ceiling, desk, microphone stand, or tripod mounting. LA-140 has a maximum coverage of 3,716m2, and up to two LA-140s can be powered from a single LT-82 transmitter via CAT-5e cabling.

Included accessories: Mounting hardware (wall/ceiling/desk/mic stand/tripod), 1x 7.6m colour matched coax cable, 1 x 7.6m colour matched CAT-5 cable, quick start guide.

Dimensions (HxWxD): 140 x 66 x 203mm. Weight: 0.95kg

LA-141 Transmitter expander

Up to four LA-141 transmitter expansion units can be connected to a single LT-84 transmitter-radiator to expand the coverage to avoid dead-spots or reach receivers which are hidden from line of sight . The rear of the unit has two RJ-45 link connections for expansion, a two way switch to control the LED indicator on/off status and a recessed rotary control for each channel offering delay compensation. A compensation table listed in the user manual shows the settings to use dependent upon frequency and cable length.

Included accessories: 1x 7.6m CAT-5e cable, LA-344 mounting hardware, quick start guide.

Dimensions (HxWxD): 38.1 x 272 x 105mm. Weight: 0.28kg.

RECEIVERS

LR-4200-IR

The LR4200IR infrared receiver is a compact belt pack, designed to be used in conjunction with the LT-84 transmitter radiator to provide listening via earphones, headphones or neck loop.

The front of the unit has an OLED display that shows the selected channel number or user set name, or selected channel functions. The channel select function can be accessed by holding down the volume up and down buttons together for five seconds. A momentary press of the power button, situated on the top edge of the receiver, will exit from the settings screen. Two 3.5mm jack sockets are located on each side of the top edge to connect compatible headphones such as the LA-401, LA-402, LA-403 or LA-404. Two pairs of earphones/headphones can be connected (one to each output) but this is not the intended purpose of the two outputs: The LA-430 neck lanyard has two 3.5mm jack connectors and therefore can use both connections to complete the induction loop for use with compatible hearing aids.

The rear of the unit has a LA-431 belt clip which can be removed by way of single screw when not necessary. A Micro USB socket can be used to charge the internal Lithium-Ion battery with the LA-423 charger and LA-422 USB type A to micro-B USB cable. A charging contact on the base of the unit allows the user to charge via the LA-381 twelve-unit charging dock. An LED situated next to the power button flashes to indicate low battery status and charging status or is constant when fully charged. Typical usage battery life is 8 hours and full charge can be obtained in 2.5 hours.

Included accessories: Quick start guide and a replaceable Lithium-ion battery.

Dimensions (HxWxD): 96 x 50 x 17mm. Weight: 53.9g.

Also available as LR-4200-IR-P1 including 1x LA-430 loop lanyard and 1x LA-401 earphone set.

LR-5200-IR

With many of the same features of the LR-4200-IR, LR-5200-IR also allows the user multichannel listening. Whereas LR-4200-IR is locked to a single channel, LR-5200-IR is has a programmable multi-function listen button that can be tuned for the venues desired channels and electronically lock out any unused channels.

Included accessories: Quick start guide and a replaceable Lithium-ion battery.

Dimensions (HxWxD): 96 x 50 x 17mm. Weight: 53.9g.

Also available as LR-5200-IR-P1 including 1x LA-430 loop lanyard and 1x LA-401 earphone set.

ACCESSORIES

LA-404 Earphone, single, in-ear

A single, in-ear earphone that is described by Listen Technologies as 'best for assistive listening applications where access to ambient or environmental sound is desired'. LA-404 can be used with either ListenIR integrated neck loop/lanyard that is worn around the neck, or connected via the included 3.5mm extension cable to a receiver worn on a belt clip or in a pocket. Frequency response of 20Hz to 20kHz and impedance of 32ohms, +/-15% at 1kHz. Weight: 9g.

LA-401 Earphone, single, on-ear

A single earpiece with over-the-ear design for comfort. LA-401 can also be used with the integrated neck loop/lanyard, and can be worn around the neck, on a belt clip, or concealed in a pocket and connected with the included 3.5mm extension cable. Frequency response of 20Hz to 20kHz and impedance of 32ohms, +/-15% at 1kHz. Weight: 11g.

LA-402 Headphones, dual ear

Universal stereo headphones with an over-head design. Frequency response of 20Hz to 20kHz and impedance of 32ohms, +/-15% at 1kHz. Weight: 68g.

LA-403 Headphones, dual ear

Universal stereo headphones with a behind-the-head design for comfort. Compatible with the integrated neck loop/lanyard, the LA-403 can also be used with the included 3.5mm extension cable to conceal the receiver in a pocket during use. Frequency response of 20Hz to 15kHz and impedance of 32ohms, +/-15% at 1kHz. Weight: 66.3g.

LA-430 Induction loop lanyard

LA-430 is compatible with the LR-4200-IR and provides 400mA/m (+/-3dB) and neck loop frequency response of 100Hz to 5kHz suitable for listening via compatible hearing aid. An integrated 3.5mm 3-pole jack socket positioned mid cable allows the user to plug in earphones or headphones and use the lanyard to provide a comfortable carrying device for the LR-4200-IR receiver. Total cable length is 74cm with a total weight of 43g.

LA-381 Charger, 12-way

This 'drop-in' charging station is designed to charge up to twelve LR-4200-IR receivers simultaneously, also providing a convenient way to dispense or store the receivers. Each charging slot has an associated credit-card sized ID card slot to be used as way of storing a deposit for the loaned receiver. The optional LA-382 cable management arm can be used to conveniently and neatly store cables and headsets. Dimensions: 44.5 x 355.6 x 190.5 (H x W x D) mm. Weight: 2.27kg.

LA-382 Cable management arm

Designed for use with LA-381 12-unit charging tray, LA-382 intelligent cable management unit is a steel manufactured stand that provides the user with a streamlined and organized way to dispense, collect, and store iDSP headphones, earsets and integrated neck loop/lanyards. The cable management base can be connected to a charging tray or mounted to a flat table top for a fixed installation. The arm can be connected facing inward or outward depending on the requirements of the setup. Weight: 1.27kg

LA-423 Charger, 4-way

LA-423 is designed to be used with up to four LR-4200-IR receivers to provide charging via included LA-422 USB to Micro USB cables. A small LED on the front of the charging unit shows when the charger is connected to a live AC mains socket. Dimensions: 62 x 74 x 29 (H x W x D) mm. Weight: 221g.

LA-344 Mounting hardware kit

Supplied with both LT-84 and LA-141 transmitters, this kit can mount the transmitters in a number of locations and arrays with adjustable positioning. The kit consists of 1x wall base, 1x ceiling T-bar base, 1x black vinyl base cover, 2x shafts, 1x adjustable head with locking ring, 1x tamper resistant screw set, 1x wrench, and 1x threaded rod.