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Acoustic Panel Pro.Felt E.3 Triangle - 3. Light Beige, E.XL.3: 686 mm; H=595 mm
verifiedStandard and XL · 14 felt colors
3D Configurator
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Acoustic Panel Pro.Felt E.3 Triangle

Limit reverberation, echo and unwanted reflections while building a decorative composition on the wall. The versatile triangle model combines certified acoustic felt with Basotect foam.

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4.75 4 reviews
from 38,90 the price depends on the size
1check Felt colour
2check Size
3check Back foam color
4check Mounting method Wall

Your configuration

Felt colour
Size
Back foam color
Assembly
Wall mountingdefault
Totalfrom 38,90 
  • *Felt colour

    *Size

    *Back foam color

    Reset options

    *Thickness

    *Thickness

    Self-adhesive tape

    Self-adhesive tape

local_shippingDelivery in 2-7 business daysDetails
replyUp to 14 days to returnReturn policy
verified_user3-year manufacturer’s warrantyQuality guarantee
constructionInstallation in 3 simple stepsVideo (0:20)
3D Room Planner Design your room in 3D Not sure which color to choose? Order material samples →

On this page

graphic_eq

Less reverberation and echo

The panel absorbs the mid and high frequencies

change_history

A versatile triangle

The modular form lets you build your own layouts on the wall

layers

Pro.Felt felt and Basotect

The two materials combine a decorative function with an acoustic one

palette

14 colors at no extra charge

The felt color doesn't affect the product's price

Acoustic data

Absorption data from 100 to 4000 Hz

The sound absorption coefficient α chart shows the panel's performance in the mid and high frequency range. The product helps reduce reverb, echo and unwanted reflections in the room.

α = 1,02at 400 Hz
α ≥ 0,86from 160 to 630 Hz
100 Hz - 4 kHzchart range
  • Less reverb and echo.
  • Fewer unwanted sound reflections off the wall.
  • Clearer conditions for conversations, work and recording.
  • Combine acoustic performance with a decorative composition.
Sound absorption coefficient α

Conditions listed with the chart: temperature 23°C, relative humidity approx. 48%. The sources do not state a sound absorption class.

Construction

A felt surface and Basotect foam

The panel uses a lightweight, modular construction that can be repeated in larger layouts.

The Pro.Felt E.3 Triangle acoustic panel in a triangle shape, split into two layers: Pro.Felt acoustic felt at the front and Basotect foam at the back
  1. Certified Pro.Felt acoustic felt

    According to the manufacturer's data, the front layer of recycled felt is 9 mm thick and meets EN 13501 with flame-retardancy class B.

  2. Basotect acoustic foam

    The rear part supports mid-frequency absorption; the product data indicates a density of about 9 kg/m³.

  3. The triangle-shaped module

    The form allows repeatable compositions and mixing different colors.

  4. A surface for adhesive or tape

    Mounting adhesive is not included in the set, and self-adhesive tape is available as an extra option.

Dimensions and prices

Choose the Standard or XL size

The price depends solely on the size; choosing one of the 14 felt colors doesn't change it.

E.3: 387, H 335 mm E.XL.3: 686, H 595 mm 387 mm 335 mm E.3: 387, H 335 mm 686 mm 595 mm E.XL.3: 686, H 595 mm side cross-section - mounted with the foam to the wall wall 2,5 cm Pro.Felt felt 0.9 cm foam Basotect® 3,9 cm foam 3 cm + felt 0,9 cm 5,9 cm foam 5 cm + felt 0,9 cm 7,9 cm foam 7 cm + felt 0,9 cm
VariantPrice
E.3: 387 mm; H = 335 mm 38,90 
E.XL.3: 686 mm; H = 595 mm 69,80 
straighten Need a custom size?
Ask for a free quote →

Assembly

Wall mounting in three steps

01design_services

Plan the composition

Lay the panels out as a trial and mark their positions, keeping the chosen pattern direction.

02format_paint

Choose the fixing method

As specified, use construction adhesive, which isn't part of the set, or the optional self-adhesive tape.

03check_circle

Press on and check the layout

Attach each module following the instructions of the adhesive or tape used, and inspect the composition's edges.

quizThe panel is also designed for ceiling mounting [to be added: confirmed ceiling installation instructions]

Choosing the quantity

How many panels does your composition need?

Enter the room's dimensions and purpose to get an approximate starting point.

Specification

Technical parameters

InstallationAssembly adhesive (not included) / Self-adhesive tape (optional)
Intended useCeiling / Wall
ConstructionBasotect foam / Certified acoustic felt
Place of productionEuropean Union
ManufacturerAddictive Sound

Projects

Build your own rhythm of color and geometry

The triangle shape and the felt palette let you match the composition to homes, offices, conference rooms, studios and public spaces.

Triangles joined into a geometric mosaic
A combination of sizes and colors on a larger wall
A Pro.Felt panel in an office or conference room arrangement
A detail of the felt and the Basotect back foam

From the workshop

The latest projects and short videos

Installations, behind the scenes and customer interiors - posted regularly on our profiles.

Instagram · Jun 24, 2026View post

The best home studio upgrade isn't another piece of gear - it's the room's acoustics.

Instagram · Jul 8, 2026View post

Good acoustics in the dining room means calmer conversations at the table.

Instagram · May 5, 2026View post

Acoustics isn't about the number of panels - it's about controlling sound energy in the room.
Presentation of the Addictive Sound wooden acoustic diffuser

Instagram · May 16, 2026View post

A diffuser doesn't absorb sound - it controls it.

Instagram · Jul 1, 2026View post

Acoustic treatment in the living room can look like part of the decor.
Ceiling with diffuser panels in a moody interior

TikTok · May 22, 2026View post

Sometimes the greatest potential hides in interiors with character.

Customer reviews

Customer reviews of the Pro.Felt E.3 Triangle Acoustic Panel

4.75/5
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4 verified purchase reviews

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4 star1
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1 star0
A
alexandre
February 12, 2026
FR
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Joli motif géométrique et feutre de bonne qualité. Pose facile et l'écho a bien diminué.

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Piotr R. checkVerified purchase
June 22, 2025
PL
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Filc najwyższej jakości, a trójkątny wzór wygląda nowocześnie. Echo w pokoju gamingowym wyraźnie zelżało

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annade71
April 3, 2025
DE
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Die Dreiecke ergeben ein tolles Wandmuster und der Filz ist sehr edel im Raum klingt es deutlich weniger hallig.

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raumklanguk55 checkVerified purchase
August 25, 2024
EN
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Nice geometric look and the felt is good quality, the triangles cut the echo, just wish the price was a bit lower.

Customer reviews from all language versions of the store (4)

FAQ

Frequently asked questions

Yes. The panel absorbs mid and high frequencies and reduces reverb, echo and reflections. You’ll find the α values in the Acoustic data section.

Two formats are available: E.3: 387 mm; H = 335 mm and E.XL.3: 686 mm; H = 595 mm; compare them in the Dimensions and prices section.

No. The price depends solely on the size, and all 14 felt colors are priced the same.

The specification calls for mounting adhesive or optional self-adhesive tape. The adhesive isn’t included in the set; see the Installation section.

Yes. Order the Pro.Felt sample set to compare the felt shades before choosing a color.

No. We publish the α absorption coefficient chart, but the panel hasn’t been assigned a sound absorption class.

Yes. The Pro.Felt E series is modular and designed for combining different shapes and colors in one composition.

Complete the set

Expand the composition and the interior's treatment

Combine the Pro.Felt E modules with other treatments

Addictive Sound Services

Need a complete acoustic design?

Start with a free consultation. We also offer acoustic measurements and a treatment design with 3D visualization and simulation.