Product Overview

The Williams AV WIR RX22-4N-NKL bundles the four-channel WIR RX22-4N infrared bodypack receiver with the NKL 001 induction neckloop, giving T-coil hearing aid and cochlear implant users direct access to assistive listening audio. Compatible with transmitters operating on the 2.3, 2.8, 3.3, and 3.8 MHz bands including the Williams AV IR T1 and IR T2 the receiver’s dual infrared detectors deliver a range of up to 30,000 square feet in single-channel mode with a WIR TX925 or WIR TX90 system. This bundle is the standard way venues satisfy the ADA requirement that a portion of assistive listening receivers be hearing-aid compatible.

Product Description

ADA guidelines require that at least 25 percent of required assistive listening receivers in an assembly area be hearing-aid compatible, and the RX22-4N-NKL answers that specification in a single SKU. The NKL 001 neckloop plugs into the receiver’s 3.5mm output and magnetically couples audio to any telecoil-equipped hearing aid or cochlear implant, so listeners hear program audio through their own personally fitted devices rather than generic earphones.

The bodypack itself is built for commercial fleets: a rotary channel selector accesses up to four program channels for interpretation or multi-room feeds, the combined on/off/volume knob keeps operation simple for patrons, and dual IR detector lenses behind the face of the impact-resistant case maintain pickup as the wearer moves. Two AA alkaline batteries run approximately 60 hours, NiMH rechargeables run 30 hours per charge, and case-mounted charging contacts work with the CHG 3512 drop-in charger (sold separately) for a 16-hour recharge without battery removal. A 3-foot lanyard allows the receiver to be worn around the neck.

Venues mixing receiver types can pair this bundle with the standard WIR RX22-4N receiver for headphone users; matching IR transmitters and system kits are available in the Williams AV collection.

Key Features

• T-Coil Hearing Aid Coupling The included NKL 001 induction neckloop sends audio directly to telecoil-equipped hearing aids and cochlear implants.
• ADA Receiver Compliance The bundle satisfies the requirement that a portion of assistive listening receivers be hearing-aid compatible.
• Four Selectable Channels Carrier selection across 2.3, 2.8, 3.3, and 3.8 MHz supports interpretation and multi-channel systems.
• Dual Infrared Detectors Two detector lenses maximize sensitivity and maintain reception throughout the coverage area.
• Up to 30,000 ft Range Single-channel mode with a WIR TX925 or WIR TX90 system covers up to 30,000 square feet.
• 60-Hour Battery Life Two AA alkaline batteries run approximately 60 hours; NiMH rechargeables run 30 hours per charge.
• Drop-In Charging Contacts Recharge NiMH batteries without removal using the CHG 3512 charger (sold separately).
• Hands-Free Lanyard A 3-foot lanyard lets patrons wear the receiver around the neck during events.

Typical Applications

• Auditorium
• House of worship
• Government space
• Conference room
• Training room
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

How does the neckloop work with hearing aids?

The NKL 001 neckloop plugs into the receiver’s 3.5mm output and generates a magnetic field that couples audio to any hearing aid or cochlear implant with a T-coil (telecoil) setting. The listener simply switches their device to the T position.

Why do venues need hearing-aid compatible receivers?

ADA guidelines require that at least 25 percent of required assistive listening receivers in an assembly area be hearing-aid compatible. Stocking RX22-4N-NKL bundles alongside standard receivers is the typical way facilities meet this requirement.

Which transmitters are compatible?

The receiver works with Williams AV infrared transmitters on the 2.3/2.8/3.3/3.8 MHz bands, including the IR T1, IR T2, WIR TX90, and WIR TX925 systems.

How are the batteries recharged?

With NiMH batteries (BAT 026-2) installed, dock the receiver in the CHG 3512 drop-in charger charging contacts in the case recharge the batteries without removal in about 16 hours. Standard AA alkaline batteries can also be used for roughly 60 hours of runtime.

Can the listener also use headphones instead of the neckloop?

Yes. The 3.5mm output accepts mono or stereo headphones and earphones, so the same receiver serves both hearing aid users and headphone listeners.

What warranty applies?

Williams AV covers the receiver with a five-year warranty, with 90 days on accessories such as the neckloop and lanyard.