Acoustic broad band panel: How to make yours right
How to make a broad band acoustic panel is a much covered area of the recording environment build process.
One of the best places to get accurate information on how to make broad band acoustic panels is JohnLSayers.com
You may have special requirements that a general type broad band absorption panel may not cover, to that I offer this linked page of many types and designs of wall mounted broad band acoustic panels to better meet your needs.
Hope something fits!
“Here we go with some detailed constructions of acoustic absorbers:
“How to: Acoustic panels
“Here I will explain the building of a corner basstrap:
Corner bass trapping modelCorner bass trapping model