Listen Technologies LS-52-072 Listen Ultimate Level III Stationary RF System, LT-800-072 Transmitter, 4x LR-500-072 Receiver, LA-317 Charging/Carry Case, 72 MHz

SKU: LTLS52072 MFR: LS-52-072
Earn VIP Reward Points

Key Features

  • Crystal-clear audio: Stationary RF system ensures exceptional sound quality for all listeners.
  • Ultimate assistive listening: Ideal for theaters, classrooms, and houses of worship.
  • Portable RF receiver included: Four LR-500 receivers offer flexibility and ease of use.
  • Complete system: Includes transmitter, receivers, charger, and accessories for immediate setup.
  • Long-range transmission: Reliable RF signal reaches up to 1000 feet for broad coverage.
  • Easy to use: Intuitive controls and LCD display simplify operation for any user.
See More Product Details
Special Order?Estimated to Ship: 08/18/2025
Free Shipping

See Options

1

Protect your gear with Adorama Protect.* Learn more

2 Year

$219.99

3 Year

$349.99

5 Year

$689.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Listen Technologies LS-52-072 Specifications

Includes

Includes

Jump to...
  • Additional Included Items

    LA-122 Universal Antenna Kit Including (Grounding Base + Mounting Bracket + Wall/Electrical Box Mounting Plate + Shorting Plate + Antenna Module + Coaxial Cable (25'/7.6m) (Terminated with BNC Connectors On Both Ends) + 2x Telescoping Antenna (72 MHz) + 2x Flexible Antenna (72 MHz) + 2x Hex Kep Nuts + 2x Fiber Washer + 4x Machine Screw (#8-32 x3/4") + 4x Tapping Screw (#8-1/2") + 4x Dry Anchors)

  • Additional Included Items (Contd.)

    LA-326 Universal Rack Mounting Kit Including (Left Side Bracket + Right Side Long Bracket + Right Side Short Bracket + Dual Mount Center Bracket + 10x Machine Screws)

    LA-304 Assistive Listening Notification Signage Kit Including (Hard Plaque + Static Cling Window Sticker)

Transmitter: Audio

Jump to...
  • 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) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 ohm

Transmitter: Controls

Jump to...
  • User Controls

    Front Panel: Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume control Rear 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

Jump to...
  • 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

Jump to...
  • 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 1000' (305m)

  • Antenna Connector

    BNC

  • Output Power

    80,000 uV at 3 m

  • Number of Simultaneous Transmitters

    6

Transmitter: Power

Jump to...
  • 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" (5mm) OD, 0.01" (2.5mm) ID, barrel type

  • Compliance

    UL, CE, GS, TUV, RoHS

Transmitter: Environmental

Jump to...
  • 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

Jump to...
  • Safety

    RoHS

  • RF

    FCC Part 15, Part 90, Industry Canada

Transmitter: Physical

Jump to...
  • 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

    Without Power Supply: 2.6 lb (1.2kg)
    With Power Supply: 3.5 lb (3.5 lb)

Receiver: Audio

Jump to...
  • Frequency Response

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

  • Signal-to-Noise Ratio

    SQ enabled: 80dB; SQ disabled 60dB

  • Audio Output Jacks

    3.5mm connectors, unbalanced, 0dBu nominal output level, 16mW maximum, impedance 32 Ohms

  • Distortion

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

Receiver: Controls

Jump to...
  • User Controls

    Channel up/down, SEEK, volume, Alkaline/NiMH batteries, SQ enable/disable

  • Programming

    Channel lock, squelch, channel lock out

Receiver: Indicators

Jump to...
  • Programming

    Channel lock, squelch, channel lock out

  • LCD

    Channel Designation, lock status, signal strength indication, programming

Receiver: RF

Jump to...
  • LEDs

    Red, illuminated when unit is on. Flashes when batteries are low, or to indicate charging. Flashes when locked and SEEK is pushed.

  • 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 earphone cable

Receiver: Power

Jump to...
  • Power Supply

    I/P 120VAC; O/P 7.5VDC 250 mA; Drop in contact points for use with charging cases. Power supply not included (LA-208)

  • Power Supply Connector

    2.3mm OD by 0.7mm ID, barrel type connector 7.5 VDC, center positive < 250mA. Drop in contact points for use with Listen charging cases

  • Battery Type

    Two AA batteries, alkaline or NiMH

  • Battery Life

    30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)

  • Battery Charging Time

    Fully automatic, 13 hours

  • Compliance

    RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant

Receiver: Environmental

Jump to...
  • 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

Jump to...
  • RF

    FCC Part 90, Industry Canada

Receiver: Physical

Jump to...
  • Compatibility

    LT-800-072-01, LT-700-072, LA-208, LA-904, LA-902, LA-901, LDS-800-072-01

  • Color

    Dark Gray with White Silk Screening

  • Door

    Manually Lockable. Up, down, and power buttons through door. Other controls behind door (see controls)

  • Dimensions (W x H x L)

    5 x 3 x 1" (13 x 7.6 x 2.5cm)

  • Weight

    Without Batteries: 3.9 oz (111g)
    With Batteries: 5.8 oz (164g)

About Listen Technologies LS-52-072

The LS-52-072 Listen Ultimate Level III system has everything you need for an easy system to specify, install, operate, and meet legislative requirements for assistive listening. Includes NiMH batteries and a charging/carrying case ideal for managing the storage and dispensing of receivers to listeners. Great for larger venues to deliver an optimum range of up to 305 m (1,000 ft).

Comes equipped with our LR-500 digital display receivers, which make it easier to program, monitor channel selection, battery level, and signal strength. Ideal for applications when multi-language interpretation or a variety of audio sources need to be heard by a variety of listeners.

Venues will benefit from managing the LR-500 when one receiver is used with multiple transmitters (audio sources) and users need the convenience of changing the channels themselves and programming of multiple channels is desired, so that users select only from the active channels. The included neck loops and signage ensures the system meets the minimum legislative requirements for venues with a capacity up to 100.

Architectural Specs
Furnish and install an RF wireless assistive listening system for use by the hearing-impaired. The assistive listening system (ALS) shall be capable of broadcasting on 17 wide band channels and 40 narrow band channels and be frequency agile. The ALS system shall have 80 dB SNR or greater, end-to-end. The RF receiver shall be capable of receiving on 57 wide and narrow band channels. The RF receiver shall be capable of receiving on 57 wide and narrow band channels. The receiver shall have a SNR of 80 dB or greater.

The receiver shall be programmable to electronically lock out unneeded channels. The receiver shall be capable of seeking channels. The device shall have a squelch. The device shall have an audio frequency response of 50 Hz to 15 KHz, ' +/- 3 dB at 72 MHz . The device shall incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset and listen to audio normally.

The device shall incorporate an LCD display that indicates channel, battery level, low battery, battery charging, RF signal strength and channel lock status. The receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The device shall have a switch able option for the use of (2) alkaline or (2) NiMH batteries. The receivers and transmitters shall offer a limited lifetime warranty. Listen Technologies Corporation LS-52-072 products are specified.

Listen Technologies LS-52-072 Features

  • Ensures public venues deliver an enriched listening experience while meeting new legislative requirements for assistive listening
  • Superior audio quality - 80 dB signal-to-noise ratio (SNR), setting the industry's sound quality standard
  • Offers 57 digital channels - Listen receivers are digitally-tuned so the transmission won't drift
  • Look & Listen LCD shows channel, battery status, and signal strength
  • Long transmission range ensures coverage for the entire venue

Product Documents

User Manual

Key Features

  • Crystal-clear audio: Stationary RF system ensures exceptional sound quality for all listeners.
  • Ultimate assistive listening: Ideal for theaters, classrooms, and houses of worship.
  • Portable RF receiver included: Four LR-500 receivers offer flexibility and ease of use.
  • Complete system: Includes transmitter, receivers, charger, and accessories for immediate setup.
  • Long-range transmission: Reliable RF signal reaches up to 1000 feet for broad coverage.
  • Easy to use: Intuitive controls and LCD display simplify operation for any user.

What's in the box:

  • LT-800-072 RF Transmitter (72 MHz)
  • 4x LR-500-072 Portable Programmable Display RF Receiver (72 MHz)
  • 4x LA-164 Ear Speaker
  • 2x LA-166 Neck Loop
  • LPT-A107-B Dual RCA to Dual RCA Cable 6.6' (2m)
  • 8x LA-362 Rechargeable AA NiMH Batteries
  • LA-317-01 4-Unit Portable RF Product Charging/Carrying Case
  • (See Specification Section for Additional Included Items)
  • Listen Technologies Lifetime Limited Warranty