Assistive Listening System with Neckloops and ADA Plaque (Lifetime Warranty)

4-person wireless multichannel assistive listening system. Ideal for meeting rooms, houses of worship, movie theatres, schools, public hearing rooms, and more

SKU: ALS-4TP Categories: ,

The Enersound ALS-TP system is a multichannel solution (in the 72-76 MHz band) to meet the needs of the Americans with Disabilities Act (ADA) standards for accessible design. In addition to ensuring that public facilities are compliant; the system can also be used to improve comprehension by people who have difficulty hearing or understanding speech in various settings including meeting rooms, houses of worship, movie theatres, schools, public hearing rooms, and more. The audio is sent wirelessly straight to their ears, avoiding the degrading effects of noise and distance on speech intelligibility.


-Enersound R-120 FM 20-Channel Receivers
-Enersound Double-ear Headphones
-Enersound T-500 Multi-Channel Transmitter
-ANT-500 Antenna
-PS-500 Power Supply
-Assistive Listening Notification Signage Kit

Disclaimer: In the US, the FCC limits the use of this system to assistive listening and simultaneous interpretation. This system cannot be used in all countries. Check with your government’s radio regulations for 72-76 MHz operation.

This bundle is sold in configurations set by the standards amounts according to the ADA requirements. The 4 person option, for example, complies with the requirements for venues with up to 100 person capacity.


• Meets ADA Accessibility Guidelines
• Up to 1,000 ft coverage area
• Multichannel transmitter and receivers
• Microprocessor controlled
• Accommodates any number of listeners
• Adjustable power output
• Multiple inputs and connector types for speech, music or any other audio signals
• 72-76 Mhz Frequency Band
• 100% digitally tuned
• Easy set-up and operation
• Portable and lightweight
• Superb sound quality
• Innovative and attractive design
• Robust engineering for maximum reliability and durability
• Channel lock feature
• LCD display on transmitter and receivers
• Receiver with multiple carrying options:
  Belt clip
  Neck strap
  Velcro arm-band
• Direct access to channel selectors
• Headphones included with receivers
• Lifetime Exchange Warranty on receivers and transmitter. See warranty information for more details.

R-120 Receiver
• Number of channels: 20 programmable.
• Frequency range: FM 72.0 to 76.0 MHz.
• FM deviation: +/- 75 KHz
• De-emphasis: 75 uS.
• Sensitivity: 1.413 uV at 12 db SINAD.
• Signal to noise ratio: 55 db at 100 uV.
• Audio frequency response: 70 Hz to 15 khz
• Audio output power: 16 mW +16mW at 16 ohm.
• Audio connector: 3.5mm stereo phone jack.
• Distortion: THD 0.5%
• Current consumption: 27 mA nominal
• Battery: 2xAAA (1.5V x 2)
• Dimensions: 3’’ Diameter / 76 mm.
• High: 1.22” / 31 mm.
• Weight without batteries: 2.3 ounces / 65 gr.
• Weight with batteries: 3.1 ounces / 88 gr.
• Accessories included: Stereo headphones, arm band, neck strap, belt clip.

Factory Pre-Set Frequencies*


* Can be modified by the user.

T-500 Transmitter
• Dimensions:
Without top antenna connector: L 5” X W 5.5”x H 1.77” (127 mm x 140 mm x 45 mm)
With top antenna connector: L 5” X W 5.5”x H 2.36” (127 mm x 140 mm x 60 mm)
• Weight:
Transmitter Only: 18.7 oz. (531 g)
Boxed with Antenna and Power Supply: 35 oz (990 g)
• Color: Black
• Power: 100-240 VAC, 50-60 Hz, 3 W
• Operating Frequencies: 72-76 MHz


• RF Field Strength: Does not exceed 80mV/m @ 3m
• Nominal Range: Up to 1000 feet (305 m)
• Modulation: FM, Selectable
75 kHz deviation max. or
25 kHz deviation max.
• Stability: ± .005% over 0-50˚C
• Pre-Emphasis: 75 µS
• Frequency Response: 100Hz – 15kHz ±3dB
• Distortion: 1% Max. THD
• Signal to Noise Ratio: 69 dB

R-120 Brochure

R-120 Manual


Brochure Multichannel Assistive Listening System with Neckloops and ADA Plaque1383941502_stock_save-pdf-16