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Creating the ideal acoustic environment in your room requires striking a balance between controlling low frequency dispersion and high frequency energy.

Primacoustic’s FlexiFuser Combination Diffuser brings all-in-one efficiency and versatility to your acoustic treatment projects, combining a variable slat diffuser to control high frequencies with high-density acoustic material for sound absorption. The result is an efficient acoustic treatment panel that helps eliminate flutter echo and powerful primary reflections, increasing the sense of space or air in the room.


Product Variations




8 × 24 × 48 in (203 × 610 × 1219 mm)


SKU Frame Panel Panel Finish Panel Thickness Box Qty
Z840-1135-08 Baltic Birch Plywood Broadband Absorber Fabric 2" (51mm) 1

FlexiFuser Construction

The innovative design begins with six variable pitch slats (A) that can be rotated or set in position to redirect sound energy away from the primary listening space. Behind the slats is a high density 6lb glass-wool absorber (B). This works double duty by eliminating any internal resonance while further absorbing unwanted room reflections. This is augmented with air space behind the panel to increase bass absorption.

Flexifuser Slats Animation

The outer frame (F) is made from easy to clean black melamine coated MDF wood composite. The FlexiFuser ships flat in kit form to save freight costs and assembles in about 30 minutes using standard household tools. Once together, the device is wall mounted using the supplied French cleats. The FlexiFuser comes with a grey acoustic panel.

Flexifuser Exploded Diagram


Critical Listening Accolade

Critical Listening

Glass wool panels are the industry standard acoustic treatment for critical listening, for use in rooms where audio fidelity really matters. Their superior absorption qualities are perfect for controlling all broadband and bass frequencies.


Fire Rated

Primacoustic Panels are fire rated to be safe to use in any environment.



LEED provides a framework for healthy, efficient, carbon and cost-saving green buildings. LEED certification is a globally recognized symbol of sustainability achievement and leadership.

Essential Information


  • Frame/Slats Material: Black melamine laminated MDF
  • Core Panel Material: Glass wool
  • Panel Finish: Acoustically transparent grey Polyester fabric
  • Weight: 46.8 lbs (21.2 kg)
Content  2

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