Flexson Wall mount ERA 300 white

Mounting a speaker on the wall without allowing it to be angled would be like installing a projector with no tilt adjustment. The Sonos Era 300, with its six drivers facing forward, sideways, and upward, projects sound in all directions: placing it on a wall without adjustment would compromise its ability to deliver Dolby Atmos spatial audio where it matters—towards the listening area. The Flexson wall mount solves this problem with a fully adjustable system.

An adjustment mechanism designed for spatial audio

What makes the Era 300 special is its upward-firing driver, which bounces sound off the ceiling to create the height effect characteristic of Dolby Atmos. Mounting this speaker on a wall therefore raises a technical question: how can you preserve this vertical projection while still directing the sound towards 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 towards the listening area, whether you are seated on a sofa facing the speaker or positioned 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 instead fires downward. The Flexson mount has been designed with this setup in mind: it can be inverted, and the speaker remains accessible, including touch controls and microphone.

Build 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 mount-and-speaker assembly reaches around 5.2 kg once put together, which requires a solid installation. The supplied hardware covers three wall types: brick, masonry, and timber stud. Mounting on plain drywall alone, without a stud, is not supported.

When this mount makes sense

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

For standalone music listening or in a stereo pair, 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
• 60° total swivel
  • 30° to the left
  • 30° to the right
• Can be inverted for upside-down mounting
  • Preserves access to the controls
  • Preserves access to the microphone

Installation

• Compatible surfaces: brick wall, masonry, stud wall
• Mounting hardware included
• Quick and easy assembly
• Custom-designed to securely hold the Sonos Era 300

Construction

• Materials: metal and high-quality plastic
• Precision engineering
• Color-matched design for the Sonos Era 300

Box contents

• Flexson wall mount
• Complete mounting hardware

General information

• Compatible with: Sonos Era 300