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Overview

Ideal for multi-channel applications in larger venues, the LS-51-072 Listen Ultimate Level II System combines everything needed for assistive listening performance and compliance in one package. Four LR-500 Portable, Programmable Display RF receivers offer listeners the option of choosing from the available channels while providing them with battery level and signal strength information. The LT-800-072 transmitter offers a full range of 57 channels to choose from, and the universal antenna kit and rack mounting kit make it easier to install and set up the system immediately.

Includes

One (1) LT-800-072-01 RF Transmitter (72 MHz)
One (1) LA-122 Universal Antenna Kit (72 MHz and 216 MHz)
One (1) LA-326 Universal Rack Mounting Kit
Four (4) LR-500-072 Portable Programmable Display RF Receiver (72 MHz)
Four (4) LA-164 Ear Speaker
Two (2) LA-166 Neck Loop
One (1) LPT-A107-B Dual RCA to Dual RCA Cable 6.6 ft. (2 m)
Four (4) LA-361 High Capacity AA Alkaline Batteries (2)
One (1) LA-304 Assistive Listening Notification Signage Kit

Highlights

  • 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
Configurations & Architectural Specs

Configurations

LS-51-072 Listen Ultimate Level II Stationary RF System (72 MHz)
LS-51-216 Listen Ultimate Level II Stationary RF System (216 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 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. Listen Technologies Corporation LS-51-072 products are specified.

Product Specifications
SpecificationLS-51-072

Physical

Shipping Weight24.0 (10.3)
FAQ
QWhat is the function of SQ?
ATo reduce noise of the systems, Listen offers a noise reduction technology called ListenSQ™. Both the transmitter and receiver must have SQ on to achieve the desired results. If you are planning to use this product with older Listen systems or equipment not manufactured by Listen, you should disable SQ.
QWhat is the transmission range of the LS-51-072 system?
AUp to 305 m (1,000 ft.) with included universal antenna kit options.
QCan the LR-500 be used with multiple transmitters?
AYes. We recommend the LR-500 for use with multiple transmitters. The LR-500 is programmable and can be set to just those channels you need.
QHow many receivers can I have in a system?
AAs many as you need, the number is endless.
QHow many channels can I program into the LR-500?
AOne to 57. The receiver has 57 channels and you can program it to have just the channels you want to access. It can be a two channel receiver, a 12 channel receiver, or keep all channels.
QHow long do the batteries last on the LR-500 receiver?
AAlkaline batteries last 30 hours. NiMH rechargeable batteries last 15 hours (72 MHz and 216 MHz). With 863 MHz, Alkaline batteries last 20 hours and NiMH rechargeable batteries last 10 hours.
QWhat are the ADA changes related to assistive listening systems?
ASimply 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
QIs there a limit to the number of transmitters I can use in one room?
AYes. The 72 MHz LT-800-072 has a maximum of (8) eight.

We've been impressed by the Listen system's ease of use (and installation), as well as its flexibility. The difference between your system and what we had been using is amazing. Patrons are happy and thus, so are we.

James D. Anderson
Director of Audio, McCallum Theater
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