2 Pack Corner Bass Trap Triangle Acoustic Foam 42cm Sonoma SCIFI

In this review the focus is on the 2 pack triangular corner bass traps from ua acoustics, sized 42x42x42cm and finished in Sonoma and SCIFI colors. The bottom line: this set is for anyone trying to tame low-frequency buildup in corners - especially recording studios, home theaters and rehearsal rooms - because the combination of laminated MDF plate and M1 foam delivers both sound absorption and diffusion where it matters most. Installation and mounting are straightforward for common room layouts, and the traps noticeably tighten bass without changing a room's decor.

Key Features

• Corner bass trapping: The triangular pyramid shape captures omni-directional bass energy that accumulates in corners, reducing boom and low-frequency smear.
• Absorption and diffusion: Laminated HDF plate plus perforated foam provide both low frequency absorption and controlled scattering to improve bass clarity.
• Targeted frequency range: Designed to affect energy roughly from 63Hz to 1000Hz, helping to control standing waves and room ring in typical small-to-medium spaces.
• Robust construction: Combination of laminated MDF and M1-grade foam balances a finished look with acoustic performance and Euroclass E fire classification.
• Pair and size: Supplied as a box of two units at 420x420x420mm each, suitable for placing in opposite or adjacent corners for balanced results.
• Customer support: The brand emphasizes satisfaction with a 100% money-back policy and responsive support if installation questions arise.

Who It's For

This product is best for audio hobbyists and small professional facilities that need to reduce corner bass build-up without large structural changes. Recording studios, home theaters, music rooms and rehearsal spaces will see the clearest benefit because these traps focus on low-frequency control and reducing slap-back reflections.

Those who should look elsewhere include installers requiring Class A fire ratings for commercial public venues or users who need active electronic bass management instead of passive treatment. Also, very large rooms may need more extensive broadband treatment alongside these corner traps.

Pros & Cons

Pros

• Good low-frequency control from a compact triangular design that fits discreetly into corners.
• Attractive laminated finish in Sonoma and SCIFI options that integrates with interiors.
• Dual functionality of absorption and diffusion improves bass definition without over-deadening the room.
• Supplied in a convenient two-unit pack for covering multiple corners or pairing across a room.

Cons

• Mounting options receive mixed feedback, with some customers finding the included self-adhesive solutions less sturdy than desired.
• Foam density perception varies among users; some report a softer feel than expected for heavy-duty studio use.

Specifications

Model Type	Triangular corner bass trap
Dimensions	420x420x420mm (19.7x19.7x19.7 in)
Thickness	210mm (8.3 in)
Materials	Laminated MDF/HDF plate and M1 acoustic foam
Absorption Range	63Hz to 1000Hz
Overall NRC	0.44
Fire Classification	Euroclass E

Our Verdict

These 42cm triangular corner bass traps are a practical, attractively finished solution for tightening bass and reducing low-frequency reflections in studios and home theaters. They offer clear benefits for small-to-medium rooms at a reasonable value, especially when a two-unit pack is used to treat opposing corners, though installers should plan their mounting method to ensure long-term stability.

Frequently Asked Questions

Can these be wall or ceiling mounted?
Yes, they are intended for wall or ceiling corner mounting, but installation method should match the surface and weight load to ensure secure mounting.

Do they absorb high frequencies or only low frequencies?
They are optimized for low-frequency absorption and diffusion from about 63Hz to 1000Hz, so they are most effective on bass and lower midrange energy.

How many packs do I need for a small studio?
One 2-pack covers two corners; many small studios start with one pack and add more traps in additional corners or along walls for balanced treatment.