TV Audio Echoes Between Rooms: Grouping Is Not the Same as Surround Sound

Music sync can hide a television limitation

A kitchen speaker can play the same television program as the soundbar and still be unsuitable beside an open doorway. The group’s distribution delay becomes audible when the listener hears both rooms at once. Test that overlap separately from the picture-to-sound timing in the television room.

A Reddit Sonos owner described a lag between an Arc-based television room and grouped kitchen and dining-room speakers. The owner remembered better past behavior, but that recollection does not prove the current grouped path can provide surround-channel timing.

A speaker configured as part of a supported home-theater system is not equivalent to an independently grouped room. Do not assume that grouping every speaker creates an expanded surround system or preserves identical timing everywhere.

Source: I can no longer TV and other speakers in house in synch

Separate picture sync from room sync

First test the television room alone. If speech does not match the picture there, investigate the television, source, connection, and supported audio settings. If that room is correct but another room lags, investigate the grouped distribution path.

Sonos documents a group-audio delay setting intended to reduce interruptions in grouped television playback. More buffering can improve reliability while increasing delay. This is a tradeoff to assess against the actual room layout, not a setting guaranteed to improve every listening experience.

Group Audio Delay is not a command to align every room with the screen. It gives the grouped stream more time to arrive consistently. Increasing it may help a remote room that occasionally runs out of audio, while making an echo more apparent where that room overlaps the theater. These two symptoms can move in opposite directions after one adjustment.

Source: Sonos: TV audio stops or skips when non-home theater rooms are grouped

Illustrative scenario: open kitchen beside the TV

Imagine the kitchen speaker is audible from the sofa as well as from the kitchen. A small timing difference becomes an echo because listeners hear both sources together. Increasing group delay may stop dropouts but make that overlap more distracting.

Possible design choices include using only the theater speakers in the shared acoustic area, reducing overlapping coverage, or selecting a distribution system designed for the required timing. Decide whether the goal is casual background listening in separate rooms or synchronized sound beside a visible screen.

Source: Sonos: TV audio stops or skips when non-home theater rooms are grouped

Acceptance needs the actual source

Test the television sources the household uses, then walk through adjoining rooms. Music streaming is a separate test. Record supported formats and settings rather than claiming that a successful music demo proves television performance.

If a compromise remains, demonstrate it before final equipment selection. A whole-home music system can be useful without promising theater-grade synchronization at every grouped speaker.

Source: Sonos: TV audio stops or skips when non-home theater rooms are grouped

Put it into practice

A decision table to keep handy