You should use minimum 3 4 mdf which is sold in 4x8 sheets.
Building in wall speaker enclosures.
See the mdf board faq for more information on obtaining and using mdf along with safety issues.
Nearly all in wall speakers are open back because it s cheap lightweight and easy.
However since they do require additional work make that extra work easy on yourself by using klipsch architectural audio accessories in your installation.
Architectural audio accessories in wall and in ceiling speakers are a great way to bring high performance audio to any room you want without having to cover your floor in speakers.
A speaker arbitrarily installed in a stud or joist space will not have the optimum volume of air behind it as a speaker in an engineered enclosure will.
The speaker box should be constructed from medium density fiberboard mdf.
An open back speaker will annoyingly bleed sound into adjacent rooms but there s another problem.
Most all in wall and in ceiling speakers are infinite baffle design.
This article details how to build a sealed speaker box which separates the front and rear sound waves to improve the bass.
Learning how to build a speaker box allows you to customize the fit and design of the box to match your desired audio quality.
Both the mid and woofer are designed to work in an enclosure of a specific size.
You will probably need 2 sheets.
En wall enclosure systems use a combination of superior materials including dynamat back wave foam and the soundsnake to damp diffuse and decouple in wall speakers.
Building backer boxes home depot link for speakers allows people to use an airtight enclosure to contain the sound for the only room they are designed for.
This is so it does not come too close to the other side of the wall.
The basic two speaker box designs are sealed and vented.
Also the sound waves from the woofer can overpower the mid and distort it.
If they are both in the same chamber like most cheap speaker systems then the enclosure size for the mid will be too large and performance will be lost.