Audio Fix / setup help

Sonos Beam (Gen 2): check the connection before expecting TrueHD or multichannel PCM

check the connection before expecting TrueHD or multichannel PCM. Exact Beam Gen 2 works for TV audio, but a lossless/multichannel format is absent. The TV connection and source’s actual format are known.

Manufacturer-documented Reviewed 2026-11-10 · Revision 1

Follow these checks in Audio Fix →

When this guide applies

Exact Beam Gen 2 works for TV audio, but a lossless/multichannel format is absent. The TV connection and source’s actual format are known.

Connection scope: HDMI / ARC / eARC audio · Optical digital audio. Symptom: An option or codec is missing.

This is a documented check, not a diagnosis of your equipment. The model name does not confirm the selected input, mode, software or connected partner.

If your exact model or a required setting is unknown, use the “I don’t know” branch below. Do not apply a similarly named model’s instructions.

Checks and possible outcomes

Start at scope. Follow the link that matches what you actually observe. Alternative branches are not a single sequence of actions.

scope

Confirm the exact setup

Exact Beam Gen 2 works for TV audio, but a lossless/multichannel format is absent. The TV connection and source’s actual format are known.

Look for: Confirm the stated setup or visible result. Stop if it is unknown.

  • Manufacturer-documented Sonos Beam (Gen 2) — manufacturer instructions ↗All home theater products; Beam (Gen 2) formats and eARC footnotes — Beam Gen 2 supports Stereo PCM, Dolby Digital and DTS on the current app. Dolby TrueHD, multichannel PCM and the starred Atmos formats require eARC; format/container and source support still matter.Exact models: Sonos Beam (Gen 2). Follow only the cited role and variant; successor models are excluded. · Source checked 2026-11-10

a1

Identify the actual connection

Confirm whether the chain is optical, HDMI ARC or eARC. The physical HDMI plug alone does not prove an eARC negotiation or capability.

Look for: The actual return-channel connection is known.

  • Manufacturer-documented Sonos Beam (Gen 2) — manufacturer instructions ↗All home theater products; Beam (Gen 2) formats and eARC footnotes — Beam Gen 2 supports Stereo PCM, Dolby Digital and DTS on the current app. Dolby TrueHD, multichannel PCM and the starred Atmos formats require eARC; format/container and source support still matter.Exact models: Sonos Beam (Gen 2). Follow only the cited role and variant; successor models are excluded. · Source checked 2026-11-10

a2

Compare with the official format table

Sonos marks Dolby TrueHD and multichannel PCM as requiring eARC. Atmos can use different containers; Dolby Digital Plus Atmos and TrueHD/MAT are not interchangeable claims.

Look for: The requested format’s connection requirement is identified.

  • Manufacturer-documented Sonos Beam (Gen 2) — manufacturer instructions ↗All home theater products; Beam (Gen 2) formats and eARC footnotes — Beam Gen 2 supports Stereo PCM, Dolby Digital and DTS on the current app. Dolby TrueHD, multichannel PCM and the starred Atmos formats require eARC; format/container and source support still matter.Exact models: Sonos Beam (Gen 2). Follow only the cited role and variant; successor models are excluded. · Source checked 2026-11-10

a3

Keep source and display claims separate

Check the source programme/output and TV’s own pass-through support. If the connection is optical or ARC, keep its documented limit rather than selecting a fictitious Beam codec switch or claiming every Atmos source needs the same transport.

Look for: The missing format is explained or a specific source/TV question is retained.

  • Manufacturer-documented Sonos Beam (Gen 2) — manufacturer instructions ↗All home theater products; Beam (Gen 2) formats and eARC footnotes — Beam Gen 2 supports Stereo PCM, Dolby Digital and DTS on the current app. Dolby TrueHD, multichannel PCM and the starred Atmos formats require eARC; format/container and source support still matter.Exact models: Sonos Beam (Gen 2). Follow only the cited role and variant; successor models are excluded. · Source checked 2026-11-10

result

Check the actual result

Have you identified whether the actual connection and source meet the official requirement for the requested format?

Look for: Confirm the stated setup or visible result. Stop if it is unknown.

  • Manufacturer-documented Sonos Beam (Gen 2) — manufacturer instructions ↗All home theater products; Beam (Gen 2) formats and eARC footnotes — Beam Gen 2 supports Stereo PCM, Dolby Digital and DTS on the current app. Dolby TrueHD, multichannel PCM and the starred Atmos formats require eARC; format/container and source support still matter.Exact models: Sonos Beam (Gen 2). Follow only the cited role and variant; successor models are excluded. · Source checked 2026-11-10

Possible result

Checks completed — report the actual outcome

The stated observation was confirmed in this setup. Completion is not an automatic Solved report, a hardware diagnosis or a physical Audio Review test.

steps completed

Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

    Possible result

    Keep the observation for support

    Record the exact model, source, connection and last visible result. Do not reset equipment, open its chassis, bypass protective limits or install firmware to compensate for an unconfirmed result.

    next support

    Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

      Possible result

      Confirm the unknown detail first

      An unknown indication is not a diagnosis. Check the exact instructions or ask the manufacturer before continuing.

      insufficient data

      Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

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