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Question

Arc Ultra Placement

  • June 3, 2026
  • 6 replies
  • 48 views
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Hi everyone,

I’m looking for advice on the optimal placement of a Sonos Arc Ultra. The current offer is ending soon, so I’d really appreciate any quick guidance.

I’ve attached photos of my full TV cabinet. The Arc Ultra would be placed on the second shelf, which currently measures 147 × 13.5 × 6.3 cm. We’re planning to remove the wooden panels from the top and bottom, which would increase the height clearance to around 9.5 cm.

For additional context, the distance from the bottom of the TV to the start of the soundbar shelf is 14 cm, so I believe the recommended TV clearance requirement is covered.

I’ve seen mixed opinions online, so I thought I’d ask here. We can also remove all four wooden sections if needed, as they appear to be glued in. I’d prefer to avoid wall mounting, as this alcove cabinet was built specifically with a soundbar in mind.

Given these dimensions, would it be safe to go ahead with the Arc Ultra and still get the best performance from it? My main concern is whether the alcove and shelf dimensions would negatively impact the upward- and side-firing drivers.

Due to the room size, I’m not planning to add a Sub or rear speakers, just the soundbar itself.

Any advice from Arc Ultra owners or Sonos experts would be greatly appreciated. Thanks in advance

 

6 replies

Pools-3015
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  • Pools-3015
  • Prodigy I
  • June 3, 2026

Placing the Arc or Arc Ultra inside a cubby will affect the up firing speakers as well as the side firing speakers. Sonos Arcs need to have room for the drivers to work properly, so I would consider a different approach. If you must place the a soundbar inside that small shelf, i would suggest one without up firing or side firing speakers.

EDIT: The fireplace may also be an issue if it is used to heat the room. Placing a soundbar just above it can cause it to overheat and malfunction.

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    • Rhonny
    • Prodigy II
    • June 3, 2026

    The ideal clearance guidelines:

    • Above: Maintain a minimum of 4 inches (10 cm) between the soundbar and the bottom of the TV screen. If wall-mounting, ensure there are at least 5.5 inches (14 cm) of clearance between the TV and the Arc.
    • Sides: Keep at least 1 foot (30 cm) of space on both ends of the soundbar. If you place it in a tight entertainment unit or between walls, the side-firing drivers won't be able to properly reflect virtual surround effects into the room.
    • Back: Leave at least 2 inches of space between the back of the Arc and the wall if placing it on a cabinet.
    • Front & Top: Ensure there are no physical obstructions directly in front of the speaker or blocking the upward-firing drivers. Never place the Arc inside an enclosed cabinet as this will drastically muffle the sound.
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      • d0157063
      • Author
      • Contributor I
      • June 3, 2026

      Thanks both. Based on the responses, it sounds like even wall mounting would be quite challenging given the current alcove design, let alone fitting the Arc Ultra inside the shelf.

      The fireplace is used regularly during the winter, and I'd rather not have to worry about the heat affecting the soundbar or limit the use of the fireplace because of the soundbar.

      With that in mind, it seems my options are either to forgo a soundbar altogether or start from scratch and explore other brands that offer slimmer, more alcove-friendly solutions. Appreciate the honest feedback

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        • nik9669a
        • Senior Virtuoso
        • June 3, 2026

        Could it go above the tv, in that alcove? Not ideal, but workable (if the monkeys can be moved!).

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        • d0157063
        • Author
        • Contributor I
        • June 3, 2026

        Technically it can, but there is no hole for HDMI and power cable to pass to the back of the TV. The alcove is few years old and that small shelf was originally built for soundbar, but obviously doesn’t seem fit for purpose, thanks anyways.

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        • d0157063
        • Author
        • Contributor I
        • June 3, 2026

        Sorry, I just can't get it out of my head. After spending so much time researching it, I had almost convinced myself to go ahead with the purchase.

        If I were to wall-mount it below the TV in the white section (which is also wood), would that be a viable option? My thinking is that this would eliminate most of the concerns around the front-, side-, and rear-firing speakers being obstructed.

        I know I probably won't achieve the recommended 10 cm clearance between the TV and the soundbar, but I'd leave as much space as physically possible.

        I could then look at covering or repurposing the existing shelf somehow, although I'd probably need a carpenter's opinion on the best way to finish it off aesthetically.

        Do you think this approach would allow the Arc Ultra to perform properly, or would the limited gap below the TV still be a significant issue? Thanks 

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