Namely, the Play:3, Play:1, and second-generation Play:5 speakers, which had worked as surround speakers for all of Sonos’ previous soundbars, won’t perform the same trick for the new Arc Ultra.

But the news has annoyed many Sonos owners. Richard Street told the BBC he had spent £1,000 ($1,300) on two Play 5 speakers. Even with the upgrade discount he believes it would cost him around £ ...