How To Make Real Acoustic Panels | Includes Measurements

John Heisz - Speakers and Audio Projects
John Heisz - Speakers and Audio Projects
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Published 2021-08-09
Acoustic panels are used to make the room sound better by reducing or eliminating reflections and excess energy that muddy and smear what you are listening to. They aren't for soundproofing - that's something entirely different. You'd use these in a home theater or music room to improve the experience.
As the car guys say: "There's no replacement for displacement!"
Thin panels only work on higher frequency sound and don't even put a dent in the real problems that exist in all small to mid-sized rooms. These are 5-1/2" (140MM) thick and are made to be spaced off the wall by that same amount. That gap between the panel and the wall makes the panel more effective, especially for lower frequency sound.
The interesting part of this build is how I fastened the cloth using the grooves and splines. I didn't want to use a billion staples to attach the cloth to separate frames and then try to figure out how to attach the frames to the boxes to make it all look neat. The splines worked perfectly and greatly simplified the process.

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All Comments (21)
  • @IBuildIt
    In the measurements at the end, the "Untreated room" shows the room before I did any work in there. That was the room before I started, not before I added these panels, and shows the overall progress up to now.
  • @tylerhackman6832
    Older video I know, but these are the best looking absorption panels I’ve ever seen. Including the professional options. Nicely done! I’m envious.
  • @incognitotorpedo42
    Wow, I'm impressed that you built everything in the shop, including the table saw!
  • @mrpres17
    Dang, you definitely chose "Expert mode" for these panels lol they came out looking great!
  • @peterisaacmusic
    Like the narration because that's where the gold is! Details you give from your experience
  • @robbiereed7779
    Love the "DVD commentary" paired video set. The other video is a fun build video and I like hearing your reasoning for each step in this one. Also, excellent build!
  • @xanderguldie
    That wool sliding in there looked so satisfying
  • @busomite
    Wow, those before and after measurements are more dramatic than I was expecting. Nice one!
  • @Groove81TV
    You are a real craft man . Enjoy seeing this !
  • @LostWhits
    I really like these. It was a really nice use of splines to fit the fabric.
  • @jaymitchosky
    John, I can watch this over and over again. Beautiful job and technique.
  • @rickfletcher8389
    Both versions of the video were great and i enjoyed them both!!
  • @jameshoverson7686
    I Love the design! That is really cool to see the results improving over time. Please keep these projects coming. I love all your projects, especially the audio projects!