Basstrap Pro 2'x4' – Modular Acoustic Bass Trap with Air Gap

Vendor:massform

Basstrap Pro 2′ × 4′

$319.00 USD

Low-end absorption, high-end design.

Built to Ground the Sound

The Basstrap Series is your low-frequency foundation — a modular set of absorbers designed to eliminate bass boom while matching the dimensions and design logic of every Massform panel. Available in 2'x2', 2'x3', and 2'x4', these absorbers integrate into your layout like silent anchors.

Engineered for Low-End Clarity

Each unit is built from high-density acoustic felt and features an integrated air gap, maximizing bass absorption while keeping a slim profile. Whether installed in corners or flush on walls, Basstraps tame sub-buildup while preserving the natural feel of your space.

Modular by Design

Every size in the Basstrap family aligns perfectly with Massform panels — visually, structurally, and spatially. From rhythm-driven walls to sculptural centerpieces, you can stack, frame, or flank your core layout with clean, intentional bass control.

Selected : 1-Pack

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In stock, ready to ship

Ships within 3 business days from California or New Jersey by FedEx or UPS Ground, to the contiguous US. Delivery usually takes 4 to 8 business days. Free 30-day returns.

Kindly note: Please enter a physical address (no PO Boxes) for smooth delivery.

Try it in your room

How many do you need? Hear a room like yours, now and with Basstrap Pro. Hear your room Where should they go? Plan your room in 3D, around your furniture. Plan in 3D New

Free shipping on orders of $849+ within the contiguous US. Orders under $849 ship for a flat $29.

Basstrap Pro 2'x4' – Modular Acoustic Bass Trap with Air Gap

1-Pack

$319.00 USD

Dimensions

22.6" x 46.3" x 2" THK (575mmx1175mmx50mm)

Materials

Polyester (PET) Acoustic Felt + Brushed Anodized Aluminum Frame

Color and texture

Our felt is a blend of colored polyester fibers, so small variations in color and texture between panels and production batches are normal.

What's inside

High-density polyester core at 2.2 kg/sqm, significantly denser than standard acoustic panels, improving low-end absorption and visual texture.

A modular bass trap system that lets you add or remove low-frequency absorption as your space evolves.

How much sound it absorbs

PERFORMANCE

Basstrap Pro 2'x4' – Modular Acoustic Bass Trap with Air Gap

Our panels don’t just look great. They deliver real acoustic results, and this chart reflects how sound behaves with our material in play.

Select a configuration to compare absorption.

Values above α 1.00 are a normal result of reverberation-room testing: sound diffracts around the panel’s exposed edges, so the panel absorbs more energy than its face area alone accounts for.

How it works

Tune the Depth. Stack the Control.

Our bass traps are modular by design. Start with one. Add more. Each layer increases control over your room’s low-end — reducing boom, clearing out resonance, and bringing balance back.

Whether you’re building a focused mix space or a warmer listening zone, you can scale the treatment until your space feels right.

See Lab Results + Download

Built-in air gap

IsoCavity Air Gap, Included.
Bass, Balanced.

Every panel comes with a 1.3" (35 mm) air-gap spacer. Install it to create a cavity that smooths bass below 250 Hz, or hang the panel directly on the wall. The spacer adds 1.3" (35 mm) of depth.

Setting it up

Smart Assembly Meets Stunning Performance

Engineered for Effortless Setup

Each Massform Bass Trap is built with modular precision—connect panels seamlessly, mount securely, and transform your space with ease. No special tools needed.

Pairs well with

Wave Acoustic Panel Set – Sandstone (3 Panels)

Wave · Sandstone · 3-panel set $699

Surge Pro 2'x2' Acoustic Panel – Silver Nimbus with Air Gap

Surge Pro 2′ × 2′ · Silver Nimbus $349 · 2-pack

89%

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11%

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Fantastic little totebag with a touch of creativity

Some bags look good only when putting down, but the Rothko Tote surely looks great on my back! Not only was it versatile for everyday commute, it is sleek, stealth and stylish, well-suited for most attires dressing up or down. The tote is PACKED with compartments and I like how everything can just sits nicely in their own designated place without dangling. The only thing I would add is a little pen pouch but I guess given the circumstances it might seem obsolete. The bag is not expandable and has a relatively slim silhouette so don't expect to put on a truckload, but if you're looking for a nimble EDC bag paired with a artistic flair, I would 10/10 recommend the Rothko Tote.

Form and Function meet for beautiful panels

Not only are these panels beautiful works of art, their function as absorber/diffuser is top notch. Using in my audio room, the sound is much better with the Massform panels, than my previous panels.

Love them

These are perfect if you’re looking for acoustic panel to bring down sound reverberation and also look cool. I love the quality of these panels. The metal frame makes it very classy and unique. I haven’t installed them on the wall of my game room yet but I can feel the difference already. Packaging was also very professional; drywall anchors and screws were included in the box.

Well Designed and Wife Approved

Anesthetically, the panels are well designed. My wife loves them, although she wasn't much help in choosing the design. The 3 panel application really fits our living living room layout.I hope they provide dimensions that better accommodate a complete wall application down the line

Nice metal frame, beautiful and functional acoustic panels that double as art.

These are awesome panels! With the solid well-built metal frame, they do have a slight weight to them but more of a solid feel than bulky. The panels were all symmetrical and look even lined up on the wall. As far as performance, they do a great job and have comparable results to a 2'x4' owens corning trap. I lined these up along a window frame to cover up the window and to quiet some of the traffic noise and there is actually a significant difference with them installed. Of course the room is already treated, but these not only became the centerpiece, they also helped focus the sweet spot in the room where the vocalist stands. They have become a conversation piece as well. Some people ask if it's just art and I explain to them that it is designed after famous architecture and show them the pictures in comparison. It really does change the point of view and how you look at them. I really do love that they are functional art. It's up to you if you find the price worth it, but I do love how they tie the room together, make for an interesting look, and really help lower the noise floor in the room. I have built regular panels for significantly less, but they weren't as creative, didn't have a metal frame, and definitely weren't expertly cut into a piece of art! The only reason I took off one star was one of the panels actually had pieces of the design loose and floating around in the box. It had become unglued. For the price, I was expecting a panel that would stay together a little better. Nonetheless, I'm very happy with them and a little hot glue fixed it right up as it was obvious where the pieces went.

Basstrap Pro 2′ × 4′

Low-end absorption, high-end design.

Built to Ground the Sound

Engineered for Low-End Clarity

Modular by Design

PERFORMANCE

Tune the Depth. Stack the Control.

IsoCavity Air Gap, Included.
Bass, Balanced.

Engineered for Effortless Setup

Pairs well with

Subscribe and save $50 !

Let customers speak for us

Basstrap Pro 2′ × 4′

Low-end absorption, high-end design.

Built to Ground the Sound

Engineered for Low-End Clarity

Modular by Design

PERFORMANCE

Tune the Depth. Stack the Control.

IsoCavity Air Gap, Included.Bass, Balanced.

Engineered for Effortless Setup

Pairs well with

Subscribe and save $50 !

Let customers speak for us

IsoCavity Air Gap, Included.
Bass, Balanced.