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At the bottom of every room page, the room diagram gives you a live picture of the speaker topology in that room. Rather than just showing a name, it renders the actual layout — left and right units for stereo pairs, a subwoofer when one is bonded, and the front and surround satellites around a soundbar. It’s a fast way to confirm you’re looking at the right room and to see how it’s configured before you start adjusting.

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What the diagram shows

Stereo pair

Two speakers side by side, marked left and right.

Single speaker

One speaker, centred.

Bonded subwoofer

When a Sub (or two) is bonded to the room — soundbar or not — it appears alongside the other speakers.

Soundbar with satellites

The soundbar at the front with a listener figure below it; surrounds behind, and separate front speakers either side of the bar when bonded. A Center label appears only when fronts are bonded and the bar has become the centre channel.
On iPad the home theater picture (the bar, the surrounds and their labels) and the page text are drawn larger, to suit the bigger screen. The diagram always shows what is really bonded, read from the Sonos® system. After a configuration change it updates on its own; if it lags, pull down to refresh — Sonos® can take up to a minute to propagate topology changes.
On Music, tap Speakers in this room below the three preset pills to open or close the map in place. Press and hold the map to configure it, just as on the room page. On a soundbar, Go to TV returns to Home Theater, where the diagram is at the bottom of the page.

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Press and hold to configure

The diagram carries a pulsing “Hold to configure” hint whether the bar is bare or fully built out. Press and hold to open Home Theater Setup, where you assign fronts, surrounds and up to two Subs. See Speaker Setup.
Stereo pairing and home theater bonding both happen inside Somos InControl — you don’t need the official Sonos® app for either. If a configuration doesn’t complete, the app restores your previous setup automatically.
The room diagram close up: the Arc Ultra at the top, a Subwoofer, Surround Left and Surround Right speakers, a listener in the middle, and the words Hold to configure.

The room diagram shows the soundbar, Sub and surround speakers. Press and hold it to open the setup page for that room.