Flexson Wall mount ERA 300 black

Mounting a speaker on the wall without allowing it to be angled would be like installing a projector with no angle adjustment. The Sonos Era 300, with its six drivers facing forward, to the sides, and toward the ceiling, projects sound in every direction: placing it on a wall without any adjustment would compromise its ability to deliver Dolby Atmos spatial audio where it matters most—toward the listening area. The Flexson wall mount solves this problem with a fully articulated adjustment system.

An adjustment mechanism designed for spatial audio

What sets the Era 300 apart is its upward‑firing driver, which bounces sound off the ceiling to create the height effect that characterizes Dolby Atmos. Mounting this speaker on a wall therefore raises a technical question: how can you preserve this vertical projection while still aiming the sound toward the listeners?

The Flexson mount offers a 20° downward tilt combined with a total rotation of 60° (30° to the left, 30° to the right). These two axes of adjustment compensate for the wall‑mounted position and direct sound toward the listening area, whether you’re sitting on a sofa facing the speaker or seated in a corner of the room.

For high mounting positions, less than 60 cm from the ceiling, Sonos recommends installing the Era 300 upside down so that the upward‑firing driver projects downward instead. The Flexson mount is designed with this configuration in mind: it can be inverted, and the speaker remains accessible, including the touch controls and microphone.

Construction and installation

The mount measures 172 mm in height, 92 mm in width, and 192 mm in depth, with a weight of 975 g. The combined mount‑and‑speaker assembly weighs around 5.2 kg once installed, which requires a solid fixing. The supplied hardware covers three types of walls: brick, masonry, and stud wall (wood frame). Installation on bare drywall, without a stud, is not supported.

When this mount makes sense

The Era 300 delivers its best performance in a home cinema setup, as a pair of surround speakers with an Arc or Beam Gen 2 soundbar. In this configuration, Sonos recommends placing the rear speakers at ear height and behind the listening position, with at least 20 cm of lateral clearance. A wall mount makes this positioning easier, especially in rooms where a floor stand would obstruct movement.

For standalone music listening or stereo pairing, wall mounting frees up floor space. The speaker can then be placed on either side of a TV unit, in a bedroom above a bedside table, or in a kitchen where the countertop is already crowded.

Technical specifications

Adjustments and positioning

• 20° downward tilt for sound directed toward the listening area
• Total swivel range of 60°
  • 30° to the left
  • 30° to the right
• Can be inverted for upside-down positioning
  • Maintains access to controls
  • Maintains access to the microphone

Installation

• Compatible surfaces: brick wall, masonry, timber stud wall
• Mounting hardware included
• Quick and simple assembly
• Custom design to securely hold the Sonos Era 300

Construction

• Materials: metal and high-quality plastic
• Precision engineering
• Design matched to the color of the Sonos Era 300

Box contents

• Flexson wall mount
• Complete mounting hardware

General information

• Compatible with: Sonos Era 300