Summary
Listen Technologies' 58-page manual for its ListenWIFI system: servers that stream venue audio over Wi-Fi to an app on listeners' phones and to the maker's LWR-1050 Wi-Fi receivers.
Key findings
- Describes the servers as distributing "real-time low-latency audio" to mobile apps and dedicated receivers, up to 500 listeners per server.
- Recommends wired headphones, or an induction neckloop for hearing aids with a telecoil, for both the app and the receivers. It advises wired headphones "to ensure low audio delay when lip sync is important" and says Bluetooth devices are "not recommended due to the significant latency that it can introduce".
- Lets the installer add up to 3 seconds of delay to each input, in 20 ms steps, to align the stream with other sources such as ambient sound, loudspeakers and video displays.
- Marks the audio packets for priority with quality of service (a DSCP/ToS value of 0xB8 by default, with Voice or Video VLAN priority) so that they cross the network as quickly as possible for low latency, and says some experimentation may be needed to find the best setting for a network.
- Functional Testing (printed pages 11-12) asks installers to check both the smartphone app and LWR-1050 receiver: verify Wi-Fi and server connections, check displayed channels or the ready screen, access channels manually or through configured beacon zones, and assess audio quality and delay. It gives no numeric delay criterion or measurement method for this check.
- Printed page 15, PA Channel, allows one PA channel per venue across all servers. Audio on its associated input temporarily overrides other listening channels, then listeners return to their previous channel; the manual identifies emergency override as a use. Printed pages 9 and 41 also describe this setting.
- The system installation instructions require servers connected to power and the local network. The manual documents an audio-priority feature, but supplies no fire-alarm assessment or power-failure test of the complete listening path.
- How ListenWIFI Works (printed page 3) describes streaming to wireless devices attached to the venue Wi-Fi network, and System Set-up (printed page 7) requires server power and a local network connection. The PA Channel description on printed page 15 concerns listeners already using listening channels; it gives no procedure for delivering an emergency announcement to a phone outside the system.
Limits
A maker's manual with no measurements: it gives no latency figure and no way to measure one. The date comes from the file name and the PDF's creation date (15 January 2026, version 5); the PDF's metadata marks it as a draft. The input delay can only make the stream later, so it helps where the stream arrives before the room sound or the picture, not after.
Read the original
www.listentech.com/wp-content/uploads/2024/07/ListenWIFI-System-Manual-2026.01.15-V5.pdf
Cited in
- How much delay does Wi-Fi streaming add, and when does it matter?Not reliable yet
- Do neckloops give telecoil users good sound from FM, infrared, Wi-Fi and Auracast receivers?Not reliable yet
- Can assistive listening carry emergency and evacuation announcements?Partly answered
- How can a venue check that its assistive listening works for listeners, day to day?Partly answered
Cite this source
Listen Technologies. ListenWIFI System Manual. 15 January 2026. https://www.listentech.com/wp-content/uploads/2024/07/ListenWIFI-System-Manual-2026.01.15-V5.pdf (accessed 13 October 2026).
Every finding here cites its source, and who funded each source is labelled. This site does not recommend products. Found an error or a missing study? Suggest a correction.