Meet the requirements of the 2010 Americans with Disabilities Act while offering a high-quality listening experience with the LS-40-072 Listen Essentials Starter Stationary RF System. Perfect for providing assisistive listening in venues with a seating capacity of less than 50 people, the LS-40 includes all of the equipment needed to ensure legislative compliance and give your clients and customers access to improved audio.


One (1) LT-803-072-01 3-Channel RF Transmitter (72 MHz)
One (1) LA-106 Telescoping Top Mounted Antenna (72 MHz)
Two (2) LR-200-072 Standard 3-Channel RF Receiver (72 MHz)
Two (2) LA-164 Ear Speaker
Two (2) LA-166 Neck Loop
One (1) LPT-A107A-B Dual RCA to Dual RCA Cable 6.6 ft. (2 m)
Two (2) LA-361 High Capacity AA Alkaline Batteries (2)
One (1) LA-304 Assistive Listening Notification Signage Kit


  • Ensures public venues meet new 2010 ADA requirements and deliver an enriched listening experience
  • Easily switches between three different channels
  • Economical price – backed by Listen’s exceptional service and support
  • Reliable clear sound quality – 62 dB SNR
  • 30-day no obligation demonstrations available
Configurations & Architectural Specs


LS-40-072 Listen Essentials Starter Stationary RF System (72 MHz)

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 3 wide band channels and be frequency agile. The ALS system shall have 62 dB SNR or greater, end-to-end. Receivers shall be frequency agile to 3 wide band frequencies set with a “channel select” switch. The receivers will incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset and listen to audio normally. The receivers shall incorporate automatic battery charging circuitry for recharging of Ni-MH batteries. Listen Technologies Corporation LS-40-072 products are specified.

Product Specifications
Specification LS-40-072


Shipping Weight 7.0 (3.2)
Q What is the transmission range of the LS-40-072 system?
A Line of site up to 198 m (650 ft.) using the included telescoping top mounted antenna. Up to 305 m (1,000 ft.) using other remote antenna options.
Q Can I purchase additional LR-200-072 receivers for my LS-40-072 system?
A Yes! Order as many as needed. The additional receivers will need an earphone (LA-164) or any other Listen earphones and batteries before being used.
Q What is the battery life of the LR-200-072?
A 120 hours alkaline. 75 hours NiMH
Q Can Listen's other 72 MHz receivers (LR-500-072, LR-400-072, and LR-300-072) be used with the LS-40-072 system?
A Yes. For best results, be sure the SQ function (Super Quiet) is turned off on any of the other receivers. Also, be sure to tune the receiver to the correct channel being used. All of Listen's receivers (aside from the LR-200-072) can SEEK to find the best local 72-75 MHz transmission.
Q What are the differences between the LR-200-072 and other Listen receivers
A The LR-200-072 offers three (3) frequencies and can be changed inside the door of the receiver via a switch. The LR-200-072 does not have an LCD screen, the ability to SEEK for open frequencies, SQ (Super Quiet), squelch or programmability. Also, the Signal to Noise is 62 dB compared to 80 dB on Listen’s other receivers.
Q What are the ADA changes related to assistive listening systems?
A Simply put, any public assembly area where audible communication is integral to the use of the space, an assistive listening system shall be provided. The assistive listening receivers need to comply with the following table below. For full details visit: http://www.ada.gov/2010ADAstandards_index.htm
Q Is there a limit to the number of transmitters I can use in one room?
A Yes. The 72 MHz LT-800-072 has a maximum of (8) eight. - The 216 MHz Lt-800-216 has a maximum of (5) five.
Related Products

The building came an exceptional, state-of-the-art sound system, equipped with assistive-listening units from Listen Technologies. We have been thrilled with the crisp, clear sound these units affords, as well as their ease of use.

Valerie Sweers
Director, Grant Public Schools Fine Arts Center
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