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The diffusing acoustic shells are acoustic treatment elements intended for large volume rooms, such as theatres or auditoriums with a stage where orchestral concerts or mere recitals take place. These acoustic diffusing components are meant to project the nonamplified original sound from the stage to the audience. This will enable people to hear the sound coming directly from its sound sources and instruments, without the electro-acoustic inherent characterization or colouring. This panel also aims to enable the stage and the room to be within the same space and not separate in two by the mouth of the stage. JOCAVI’s models have been designed at the specific scale of these needs. Due to its shape and depth, they also have a high diffusion coefficient on medium/low frequencies. The all are large-sized diffusers that provide a very homogeneous diffusion within the diffuse and sound spectrum.
Manufactured in wood with a rigid framework, these pieces can be coupled and multiplied in order to suit each project’s demands. When mounted, several modules should be grouped so as to obtain an area that is proportional to each space.
Mounting: They can be hung from the ceiling in a strategic position in order to obtain sound diffusion in the required angles. They can also be mounted with a motorized rigging system from the stage ceiling. These elements / modules are fastened with steel cables by using appropriate mounting accessories. Their low weight makes mounting easier. As with any other JOCAVI diffusion panel, these models can also be applied on false ceilings, flat ceilings or walls.


Manufactured with Birch Plywood.
Average diffusion: 0.68/m2 [>100Hz;<5KHz] NRC: 0.23/m2 [>250Hz;<10KHz]
Fire-resistance: Euroclass B-s2, d0 (similar to M1)
100% recyclable
Depending on the space available on the stage, more or less elements may be used in order to form the shape of a perfect shell.
Built on a modular configuration with 120x120cm pieces, up to four modules can be coupled in height, thus totalling a diffusing homogeneous surface of 120 x 480cm.
All AS4 models have 125 x 500cm (49.2″ x 196.9″).
These models are a large-sized diffusers that provides a very homogeneous diffusion within the sound and diffuse spectrum

Product Information

  • EAN: 5600924054261
  • Reference: WFLAS4/120R
  • Color: CHERRY
  • Finishing: Wood veneer
  • Material: WOOD
  • Material Info: Finishing CHERRY - Wood veneer
  • Country of Origin: Portugal
  • Model Variant: Woodfoil AS4 (120R) WOOD - Wood veneer

Model & Sizes

Size Width Height Length
Metric Size 1200 cm 5000 cm 780 cm
US Size 47.24 in 196,85 in 30,71 in
Metric Weight 220,00 kg
US Weight 485,0164 lbs

Acoustic Graph



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