Auracast Leaves the Assistive Lane for the Main PA

An off-Broadway production in New York is running its whole audience mix over Auracast. Love Me, the comedian Drew Michael's show at the SoHo Playhouse until 22 November, uses Auri, the Auracast-based system from Listen Technologies and Ampetronic, as the primary sound system rather than as an accessibility add-on. Audience members wear headphones wired to a small receiver that talks to a transmitter in the room; guests with Auracast-enabled hearing aids or cochlear implants stream the show straight to their own devices with no receiver at all. Michael, who is Deaf, performs on the same technology: hearing aids on a separate broadcast feed act as his in-ear monitors, keeping him locked to the recorded audio he performs against. Dynamic captions, colour-coded to match the sound, run on iPads for Deaf audience members at every seat.

That is a genuine category change. Auracast, the Bluetooth LE Audio broadcast profile, has spent its short commercial life in the assistive-listening drawer, alongside the induction loop it is meant to replace. Using it for the main mix removes the assumption that there is a loudspeaker system and a separate, lesser path for people who need help. It also makes the room's acoustics irrelevant, which for a spoken-word show in a small house is the point: every seat gets the same mix at the same level, and the show can be mixed for intimacy rather than for coverage.

The engineering consequences are worth spelling out, because they invert normal practice. A primary wireless path has no acoustic fallback: if the transmitter drops or the battery in a receiver dies, that seat goes silent, not quiet. Receiver logistics become production logistics - charging, distribution, hygiene, returns, and a spare count per performance. Latency has to be measured against the live voice rather than against a loudspeaker, because a performer hearing himself through a delayed feed will fight it. Encryption and pairing matter more when the content is the show rather than a translation channel. And because Auracast shares 2.4 GHz with every phone in the audience, a spectrum survey and a fixed channel plan belong in the technical rider, not in the day-of-show checklist.

For venues the practical architecture is a wired backbone feeding a broadcast transmitter, with the transmitter treated as just another output on the audio network. That is where Amtune's Dante and AES67 audio interfaces and Dante audio modules fit: the console, the playback machine and the caption system stay on one clock domain, and the broadcast feed is a matrix output rather than a separate analogue chain. Keep a conventional reinforcement path as a documented backup, power the transmitter from the UPS that also carries the show control, and log receiver battery state as part of the preset check.