Wedge Acoustic Foam

The wedge profile — why it absorbs more mids

Sound entering a wedge panel travels down a corridor between two angled fins before it hits the base — a longer path than in a pyramid panel of equal thickness. Longer paths mean more energy converted to heat inside the foam, so lower frequencies get absorbed more effectively.

The trade-off: pyramid foams scatter more, wedge foams absorb more. In a small vocal booth you want absorption — pick wedge. In a mixing room you want a balance of scatter and absorption — pick pyramid. This is the choice pattern used by studios worldwide.

The classic use cases

Vocal booths: 50 mm wedge on all four walls and ceiling, with a fully-enclosed dead space around the mic. This is the go-to Acoustimart spec for regional broadcast studios and voice-over rooms.

Isolation booths: same principle, larger scale. When you need one instrument to not bleed into the next mic, wedge foam does the room treatment inside a mass-loaded shell.

Mix room corners: wedge tighter than pyramid at the corners, where multiple wall-planes converge and standing waves build up. Corner wedge treatment is a small but noticeable improvement in mid-range clarity.

Wedge foam vs bass traps — different jobs

Wedge foam works from ~300 Hz upwards. Real bass control (below 200 Hz — kick drum body, bass guitar fundamentals, cinema LFE) needs mass-and-depth: corner bass traps built from 100 mm+ PU foam, or dedicated tuned absorbers.

The mistake beginners make is trying to fix boomy bass with more wedge foam. It won't. Fix bass with corner traps; fix mids with wedge or pyramid; fix highs with either.

Density — 32 kg/m³ across the range

Acoustimart wedge foam runs the same 32 kg/m³ density as our pyramid range. The wedge geometry does the acoustic work; density is chosen for dimensional stability and long-term durability.

Cheaper imports run lower density and higher variance — you'll see the wedge tips deform after six months and lose their absorption profile. Ours holds shape through Indian humidity swings for 8+ years.

Sizing and layout for a vocal booth

Standard Indian vocal booth is 4×4×7 ft interior. That's 7 m² of wall + ceiling to treat. At 50 mm thickness in 60×60 cm panels, you need about 19 panels — call it two 3×6 ft sheets cut on-site, giving you 22 pieces of 60×60 cm with some cutting waste.

Cover 80% of the four walls (leave door and window untreated). Cover 100% of the ceiling. Floor stays hard for standing/sitting comfort. The result: an RT60 of 0.15–0.20 s — reference broadcast target.

Bulk pricing for studio-build orders

Wedge foam is our most common studio-build order. If you're specifying for a multi-room facility (broadcast, recording, podcast pods across a floor), reach out — bulk pricing kicks in at 20+ sheets and scales further from there. Studio-build partners across India have Acoustimart on standing order for this reason.