Listen Technologies LS-56-072 Listen iDSP Advanced Level I Stationary RF System, LT-800-072 Transmitter, 4x LR-5200-072 Receiver, 72 MHz

SKU: LTLS56072 MFR: LS-56-072
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Key Features

  • Ensure clear audio for all with this Listen Technologies assistive listening system.
  • Crystal-clear sound quality ensures everyone can comfortably follow presentations.
  • This complete audio solution enhances communication in classrooms & meeting rooms.
  • Portable receivers offer ease of use; perfect for tours or on-the-go listening.
  • Enjoy up to 8 hours of battery life with our advanced DSP RF receivers.
  • Affordable assistive listening: Improve accessibility without breaking the bank.
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Special Order?Estimated to Ship: 08/17/2025
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Listen Technologies LS-56-072 Specifications

Transmitter: Audio

Transmitter: Audio

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  • Frequency Response

    50 Hz - 15 kHz ( +/-3 dB)

  • Signal-to-Noise Ratio

    SQ enabled 80 dB, SQ disabled 60 dB

  • Audio Input 1

    Rear panel, one (1) Female XLR or 1/4 in combo connector, balanced, 0 / -55 dBu (line/mic) nominal input level adjustable, -30 / +21 dBu (line/mic) maximum input level, impedance 20k / 1k ohm (line/mic), phantom power +12 VDC

  • Audio Input 2

    Rear panel, two (2) phono connectors, unbalanced, -10 / +10 dBu nominal input level adjustable, +30 dBu maximum, impedance 100k ohm

  • Audio Processing

    Compression can be turned on/off, slope internally adjustable from 1:1 to 4:1, default 2:1

  • Contour

    Cuts and boosts frequencies above 5 kHz

  • Distortion

    < 2% total harmonic distortion (THD) at 80% deviation

  • Audio Output

    Input 1 and input 2, mixed output (rear panel), two (2) phono connectors, unbalanced, -10 dBu nominal output level, +15 dBu maximum, impedance 10 ohm

  • Headphone Output

    Front panel, one (1) 3.5mm (0.14") stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 ohm

Transmitter: Controls

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  • User Controls

    Front Panel: Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume controlRear Panel: Input 1 Level, (Line, Mic, Mic-Phantom Power), Input 2 level (-10 / +10 dBu), RF power level (low, mid, high)

  • Internal Adjustments

    Compression ratio for audio processor

  • Programming

    SQ on/off, process on/off, channel lock

Transmitter: Indicators

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  • LCD

    Channel designation, lock status, RF power level, programming (front panel)

  • Audio Input Status LEDs

    Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED's (8 green, 2 red)

  • Processing

    Indicated by a green LED when on (front panel)

  • Test Tone

    Red LED illuminates when test tone is enabled.

  • RF Power

    Indicated on the LCD (low, mid, high)

Transmitter: RF

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  • Frequency Range

    72.025 - 75.950 MHz

  • Number of Channels

    17 wide band, 40 narrow band

  • Frequency Accuracy

    +/- .005% stability +32 Degree to +122 Degree F (0 Degree to +50 Degree C)

  • Antenna Type

    Various antennas available

  • Transmitter Stability

    50 PPM

  • Transmission Range

    Up to 305 m (1,000 ft.)

  • Antenna Connector

    BNC

  • Output Power

    80,000 uV at 3 m

  • Number of Simultaneous Transmitters

    6

Transmitter: Power

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  • Power Supply

    In line power supply, Listen part number LA-207 (Line cord is determined by the each Country's AC power standards)

  • Power Supply Input

    100-240 VAC, 50-60 Hz, 0.4 A

  • Power Supply Output

    12 VDC, 1.3 A, 15.6 W

  • Power Supply Connector

    0.02" (5.0mm) OD, 0.01" (2.5mm) ID, barrel type

  • Compliance

    UL, CE, GS, TUV, RoHS

Transmitter: 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

Transmitter: Compliance

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  • Safety

    RoHS

  • RF

    FCC Part 15, Part 90, Industry Canada

Transmitter: Physical

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  • Color

    Dark Gray with white silk screening

  • Rack Mounting

    One (1) rack space height, 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in one rack space, optional rack mount (LA-326)

  • Compatibility

    LR-300-072, LA-125, LA-130, LA-326, LR-100-072, LR-400-072, LR-500-072, LA-277, LA-304, LR-4200-072, LR-5200-072-P1, LR-5200-072, LR-4200-072-P1, LP-40-072-01, LP-41-072-01, LP-50-072-01, LP-51-072-01, LA-303, LDS-5200-072, LDS-4200-072, LDS-4200-072-P0, LDS-4200-072-P1

  • Dimensions (W x H x D)

    8.50 x 1.7 x 9.13" (21.5 x 1.75 x 23cm)

  • Weight

    2.6 lb (1.2kg)
    with Power Supply: 3.5 lb (1.6kg)

Receiver: Audio

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  • Frequency Response

    50 Hz - 15 kHz ( +/-3 dB)

  • System Distortion

    < 2% total harmonic distortion (THD) at 80% deviation

  • Output/s

    Two (2) 3.5mm (0.14") connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm

  • System Signal to Noise Ratio

    SQ enabled 80 dB, SQ disabled 60 dB

Receiver: Controls

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  • User Controls

    Power, up/down volume, Listen button for end user channel selection

  • Programming

    Via software and USB port

  • Set-up Controls

    Press and hold up/down volume buttons for 5 seconds to enter channel adjust, use up/down to select channel

Receiver: Indicators

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  • LEDs

    Flashes when batteries are low or to indicate charging, solid when fully charged

  • Display

    Channel designation,battery level, unit number, charging status

Receiver: RF

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  • Frequency Range

    72.025 - 75.950 MHz

  • Number of Channels

    17 wide band, 40 narrow band

  • Sensitivity

    .6uV typical, 1 uV maximum for 12 dB sinad

  • Frequency Accuracy

    +/- .005% stability 32 to 122 Degree F (0 to 50 Degree C)

  • Squelch

    Programmable in 20 steps, automatic on loss of RF signal

  • Antenna Type

    Uses ear phone/neck loop lanyard and short ear phone cable or standard earphone cable

Receiver: Power

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  • Power Supply

    Micro USB connector, 5 V, 500 mA

  • Battery Type

    Lithium Ion 3.7 Vdc, 1200 mAh

  • Battery Life

    8 Hours of continuous use

  • Battery Charging Time

    Fully charged in 2.5 Hours

Receiver: Environmental

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  • Temperature - Operation

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

  • Temperature - Storage

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

  • Relative Humidity

    0 to 95% relative humidity, non-condensing

Receiver: Compliance

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  • Standards

    FCC Part 15, Part 90, Industry Canada, RoHS

Receiver: Physical

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  • Compatibility

    LT-800-072-01, LT-700-072

  • Color

    Black

  • Dimensions (H x W x D)

    3.75 x 2.0 x 0.64" (9.6 x 5.0 x 1.7cm)
    with Belt Clip: 3.75 x 2.0 x 0.80" (9.6 x 5.0 x 2.1cm)

  • Weight

    Without Batteries: 1.60 oz (45g)
    With Batteries: 2.40 oz (68g)

About Listen Technologies LS-56-072

The LS-56-072 Listen iDSP Advanced Level I Stationary RF System is an innovative and comprehensive assistive listening solution designed to deliver unparalleled audio quality and user experience. This high-quality system includes the LT-800-072 72 MHz transmitter, equipped with a telescoping antenna for optimal signal transmission, and four LR-5200-072 Advanced iDSP receivers, each engineered to provide listeners with an exceptional audio experience with 20 dB less hiss than competing RF receivers.

The LR-5200-072 receivers are designed for versatility, offering multiple channels to accommodate various audio streams or language interpretation services, making them ideal for venues that cater to diverse audiences. The advanced receivers feature a programmable multi-function Listen button, allowing for easy tuning to preferred channels and the ability to lock out unused channels, ensuring a focused and tailored listening experience.

Each receiver is powered by a durable Lithium-ion battery, boasting a long life and significant cost savings over time. The batteries are quick to recharge, reaching full capacity within just 2.5 hours, ensuring minimal downtime and continuous operation. The LS-56 system also includes universal ear speakers and neck loops/lanyards, which are compatible with telecoil-equipped hearing aids and cochlear implants, providing an inclusive listening environment.

The system comes complete with a 4-port USB charger and assistive listening notification signage kit, ensuring that your venue is equipped to meet the needs of all customers while maintaining compliance with accessibility regulations. The architectural specifications of the LS-56 system are robust, with the ability to broadcast on 57 channels, frequency agility, and a signal-to-noise ratio of 80 dB or greater, ensuring clear and reliable audio transmission.

The receivers boast an audio frequency response of 50 Hz - 15 kHz (±3 dB), employing unique DSP SQ noise reduction technology for pristine sound quality. The programmable squelch circuit and multifunctional display enhance the user interface, providing information on battery status, inventory number, and channel selection. The USB connector serves multiple purposes, including inventory control, setup, charging, and firmware upgrades, while the automatic battery charging circuitry and non-proprietary battery design add convenience and ease of use.

With an end-to-end SNR of 80dB or greater, the LS-56-072 Listen iDSP Advanced Level I Stationary RF System by Listen Technologies Corporation stands out as a durable, high-quality, and advanced listening solution for any venue requiring superior assistive listening capabilities.

Listen Technologies LS-56-072 Features

  • Advanced DSP SQTM noise reduction technology delivers 20 dB less noise and hiss than any other listening device
  • Integrated neck loop / lanyard with DSP loop driver improves the listening experience for T-coil users
  • Smallest device of its kind makes it easier to wear and for venues to dispense, store and maintain
  • Advanced green battery technology dramatically reduces costs of ownership and hassles while reducing the number of batteries in the landfill
  • Ensures public venues deliver an exceptional listening experience while meeting new legislative requirements for assistive listening

Product Documents

User Manual

Key Features

  • Ensure clear audio for all with this Listen Technologies assistive listening system.
  • Crystal-clear sound quality ensures everyone can comfortably follow presentations.
  • This complete audio solution enhances communication in classrooms & meeting rooms.
  • Portable receivers offer ease of use; perfect for tours or on-the-go listening.
  • Enjoy up to 8 hours of battery life with our advanced DSP RF receivers.
  • Affordable assistive listening: Improve accessibility without breaking the bank.

What's in the box:

  • 1x LT-800-072 Stationary RF Transmitter (72 MHz)
  • 1x LA-106 Telescoping Top Mounted Antenna (72 MHz)
  • 4x LR-5200-072 Intelligent DSP RF Receiver (72 MHz)
  • 4x LA-401 Universal Ear Speaker
  • 2x LA-430 Intelligent Earphone/Neck Loop Lanyard
  • 1x LA-423 4-Port USB Charger
  • 1x LPT-A107-B Dual RCA to Dual RCA Cable 6.6' (2m)
  • 1x LA-304 Assistive Listening Notification Signage Kit Including (Hard Plaque+Static Cling Window Sticker)
  • Listen Technologies Lifetime Limited Warranty