I’d love to share with you our AuracastTM broadcast audio experience to date at Bethel Evangelical Lutheran Church in Manassas, VA.
We have an existing FM transmitter that is used with loaner bodypacks and either earbuds or headphones within our worship space. As a next iteration on our hearing assistance support, we split the feed to the FM transmitter and hooked up a HomeSpot BA-210 AuracastTM broadcast audio transmitter.
This immediately just simply worked! We were able to connect with multiple Auracast-capable devices, including HomeSpot’s own JY-300 neckband and BA-310 receiver. We also tested successfully with Galaxy Pro 3 earbuds. JBL Go-4 speakers worked, but differently and with an unacceptable latency - the primary Go-4 receives a BT Classic transmission from the BA-210, then sends an AuracastTM broadcast audio transmission, introducing a lag that was too large to use within the same area as the audio source.
So we went live with the HomeSpot transmitter a couple Sundays ago. Oops! The transmitter was right next to a 2.4GHz diversity receiver, and interfered with that reception. Even moving 2.5 feet away was not sufficient. What did work was to use longer cables, and raise the HomeSpot transmitter about 8 feet off the ground, and about 9 feet away from the 2.4GHz receiver.
(I’m restricted to one image as a new member with new posts. Will put additional pix in next posts).
You can see the BA-210 cable-tied to a sponge and wedged into the space between the beam and the wall above the A/V booth in the back of our nave. We may even try to make this look prettier in the future 
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However, at that point we noticed some noise had been introduced. We had to put a ground isolation transformer inline, and not too far from the BA-210 transmitter, in order to resolve this.
Last Sunday, we operated successfully in our roughly 80’x50’ worship space, with no dead spots detected.
(I’m restricted to one image as a new member with new posts. Will put additional pix in next posts).
We also have cobbled together a “pew pack” for our choir loft as some members have trouble hearing the service in the loft. This pew pack consists of a 4xAA battery pack with a USB Y-cable providing power to both the BA-310 receiver and a set of low-end PC speakers. We found a small, black over-the-door hooked frame and a black pouch to hold the components. The speakers are attached to the frame with stiff hinges, allowing the speakers to be adjusted and pointed upwards towards the listener. In the above image, the battery pack and HomeSpot BA-310 are hanging out of the pouch for your viewing, and are stuffed into the pouch during normal operation. Since this photo, we have used black electrical tape to hide the LEDs.
HomeSpot has indicated they may soon have a neckband with speakers to receive the AuracastTM broadcast audio transmission. This is exactly what our pew pack is trying to do, but it would be several orders of magnitude better to have HomeSpot’s product when it’s available!
Another test we did was to daisy-chain the HomeSpot transmitter and receiver. We hooked a BA-310 receiver’s output to the input of a second BA-210 receiver. The primary BA-210 transmitter signal dropped off just beyond our narthex, so we put the BA-310/BA-210 pair as a repeater in the narthex.
We verified this extended the range of the audio broadcast via the second tier stream, and the latency was low - noticeable but tolerable. But the latency wasn’t the point of the test. We have physical cabling and speakers at several locations in our building, so people in those rooms can hear the audio from the service (such as in the nursery). We think we’d have complete building coverage with a tertiary tier. So if we needed audio in another location, or if one of the existing speakers or cabling failed, we have an extremely economical alternative to provide this audio in our building.
Hope this helps someone!