En-Wall

En-Wall in-wall speaker enclosures deliver clean, full audio while controlling sound transfer between rooms. Engineered by Dynamat as sealed, damped back-boxes in 4" and 6" wall systems, En-Wall gives your in-wall speakers the acoustic foundation they need to perform. Choose the system that matches your wall depth, and hear what your speakers were built to do.

NoiseVibrationAudioComplete

En-Wall Speaker Enhancement System for 4" Walls

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NoiseVibrationAudioComplete

En-Wall Speaker Enhancement Enclosure System for 6" Walls

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NoiseVibrationAudioComplete

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Why Use an In-Wall Speaker Enclosure

An in-wall speaker enclosure, also referred to as an in-wall speaker box, is a sealed, damped back-box that mounts behind your speaker inside the wall cavity. Without one, the driver fires into an open space filled with studs, insulation, and shared drywall, which smears the sound and lets it bleed into the next room.

A dedicated speaker enclosure gives the driver a defined acoustic chamber, so what you hear is the audio the speaker was engineered to produce.

Cleaner Audio, Less Room Bleed

A sealed in-wall speaker enclosure does two jobs at once. It contains the rear energy of the driver, which tightens output and removes the hollow sound of an open wall cavity. It also damps the panel movement that carries noise into adjacent rooms. You get cleaner sound in the room you’re listening in and less of it escaping to the rooms you’re not.

For whole-home builds, pair En-Wall with broader home theater sound deadening to keep sound where you want it.

In-Wall Speaker Enclosure: 6" vs. 4” Wall Systems

Dynamat En-Wall comes in two systems so the enclosure matches your build:

4" system: Fits standard 2x4 stud walls and smaller in-wall speakers
6” system: Fits deeper 2x6 stud walls and provides the enclosure space larger speakers need to perform properly

Match the kit to your wall depth and speaker size, and the enclosure performs without crowding the driver.

Installation and Compatibility

En-Wall installs in standard stud bays with common hand tools. No specialty hardware or framing modifications required. Here's how the process works:

Fit, Seal, and Mount

Installing an in-wall speaker enclosure takes three steps:

Fit the enclosure between the studs.
Seal it to the surrounding surface.
Mount your speaker to the front.

The sealed connection is what contains the sound and blocks room-to-room transfer, so close any gaps before mounting the speaker.

For ceilings, the same approach carries over to a ceiling speaker box setup using DynaBox. Across the Dynamat product line, from car audio sound deadening to industrial noise control, the same principle applies: control vibration at the source to control unwanted noise.

In-Wall Speaker Enclosure: FAQs

An in-wall speaker enclosure is a sealed back-box that sits behind your in-wall speaker. It gives the driver a defined acoustic chamber instead of an open wall cavity, which delivers fuller, cleaner audio and cuts sound bleed into adjacent rooms.

If your speakers fire into a bare stud bay, a speaker enclosure like the 4" or 6" En-Wall system is an upgrade worth considering.

The 4" system fits standard 2x4 stud walls and smaller drivers. The 6" system fits deeper 2x6 walls and larger speakers that require a larger enclosure. Measure your wall depth and check your speaker size, then choose the in-wall speaker box that fits.

Fit the enclosure between the wall studs, seal it against the surrounding surface, and mount your speaker to the front opening. A tight seal helps contain sound and reduce transfer between rooms, so close any gaps before mounting the speaker.

Yes. A sealed, damped back-box contains the rear output of the driver and reduces the panel vibration that carries noise through shared walls. The result is more sound staying in the listening room and less reaching the space next door.

A sealed back-box gives your in-wall speaker a defined acoustic chamber instead of an open wall cavity, so bass sounds tighter and more controlled.

Set realistic expectations. En-Wall provides the enclosure your speaker was designed to work with, so low-frequency performance can improve accordingly.