Audio Engineering

Small Room Acoustic Treatment

Comments (22)
  1. L Scott Knight says:

    There is a video on where a guy named Mitch Gallagher (sp?) shows his basement studio set up. He needed to adjust his room dimensions and given he had space he built a wall on one side that also created an equipment closet. But he did something I’d never seen before. The wall, instead of being a solid surface what made of a peg board like material (thousands of little holes) and he said the closet then also worked as a trap. Any thoughts on this?

    1. Warren Huart says:

      Hi @l_scott_knight:disqus That’s cool information! Thanks for letting us know! Best of luck with your own studio design!

      1. L Scott Knight says:

        Well, I think I’ve come up with a way to reorganize with a stub wall. I’ll have to contact John someday to get help determining where to put the wall exactly (or if it will work like I think even). But that will have to wait until I get the room back. Could be up to another year. Sigh. Which is why I just got new headphones. Gonna learn a new DAW too. S1 v3.2.

    2. pask74 says:

      I guess the peg boards are an attempt to build some sort of Helmholtz resonators.

  2. Frederick Thorne says:

    So much great information and affirmations, too! You answered a plaguing curiosity I had about my mixing room, because I have it set up where I am facing my monitors in the ‘short’ dimension of the room and they do not aim toward my tracking room. This was an accident (not intentionally planned), but I have been itching to turn my setup 90 deg. for the long dimension. You saved me so much work, haha! _ One thing about the speakers – I have a pristine pair of 4311 JBLs, but because my room has limited treatments, I literally have them set up as near-field monitors, because they seem to be very focused. If I move a foot to either side, I lose the sweet spot. I think I am ok in that regard, but it makes it tricky when collaborating on a mix so both of us hear the same thing. – I really want to extend a healthy Thank You for sharing your experience and wisdom, John, you rock!!

    1. Warren Huart says:

      Hi @frederickthorne:disqus Yes indeed! John Rocks!! Thanks John for all of your insight! Have a marvellous time recording and mixing, many thanks Warren

  3. Lars says:

    Thank you so much John, these informations are gold !

    I was researching a lot in gearslutz in the last months (acoustic), I found a lof of useful information but also many confusing things until I found some video with you, where you get to the heart of things.

    I am always afraid of the rockwool fibres, so the tip with dacron is very welcome. I Considered already to work with polyester foam panels, but they are soooo expensive for 4+ inches.
    Thank you also Warren for sharing with us John’s work !

    Cheers from Switzerland,

    1. Warren Huart says:

      Hi @disqus_MNUH4Zm90W:disqus My pleasure! I enjoyed talking with John and knew he would be able to give us even more detailed information in the forum! Have a marvellous time recording and mixing, many thanks Warren

  4. kennymac says:

    Thanks Warren and John! I found this v interesting, I’ve been interested in acoustics for many years 🙂 I came up with an analogy to explain sound absorption materials… however I’m not sure if it’s much use, anyway…

    If you imagine a white light bulb (AU says “light globe”) suspended in a glass cube (UK says “greenhouse”)

    If I measure the light escaping from all around the cube I can see that…
    – if the glass is clear, all energy escapes (this equates to 0kg/m2 soundproofing or complete air gap)
    – if the glass is black, no energy escapes (this corresponds 30kg/m2, e.g. concrete wall = expensive!)
    – any air gaps completely quickly defeat the use of expensive black glass. I may as well use blue glass if I can’t seal up the cracks.
    – A black cube is of little use if the window and door glow orange
    – I can experiment using cheaper materials, in two layers, so their absorption is complementary, but using two layers of orange glass gets me a dark orange leak – the common frequency of light just passes straight through!
    – using red and blue gets me a dark purple result, as their absorption is complementary

    Next step for audio guys is to change the light bulb colour to pink, so their gear will measure it! 😛

    1. Warren Huart says:

      Hi @kennymac:disqus thanks very much for all of your great insight!! I really appreciate it! Have a marvellous time recording and mixing, many thanks Warren

  5. Martin Weeks says:

    I watched and listened to the video interview of John Brandt. Very useful and helpful. He seemed like a genuinely straight forward, stand up guy. Downloaded his incredible spreadsheet. It’s now on file in my folders for all things IMPORTANT to mixing. Although there’s not a lot I can do about treatment of this apartment (management would pitch a bitch.) The “Library” of Information is now starting to get extensive and one day will be applied to it’s full potential. (We are seeking to find a way to retire and get our own home, then we can do what we wish with walls and bridges (get it?)
    Sent the link to the interview to an engineer friend of mine who said to say hi to John for him. They apparently know each other. So if you talk with John again soon Warren tell him Evens Colas said “hey!” See proof positive that the universe is in fact shrinking.

    While some of the suggestions are for us simply not doable at this time I take comfort in finding out I’m doing a few things right. (facing the short wall, and proper distance from it.

    Please thank John for the article if you talk to him again as it’s being copy/pasted to my word processor to add to the “Library.” And thank you for continuing to publish great and useful information that helps all of us make better music. You are a Prince Warren…and we all love you for this. Peace!!

    …oh yeah…”have a bodacious day!!” 😀

    1. Warren Huart says:

      Hi @martin_weeks:disqus Truly blessed to have John here to help us!! Have a marvellous time recording and mixing, many thanks Warren

  6. Mange says:

    So much information and actual tips what to do before you buy that $2k powercord. Not that I have thought of ever getting one of those:)

    1. Warren Huart says:

      Hi @plap-disqus-37a749d808e46495a8da1e5352d03cae:disqus Haha yes indeed! Have a marvellous tie recording and mixing, many thanks Warren

  7. fuzzbox says:

    Hi Warren,
    yeah doing or considered most of this. I have my small room acoustically treated. I use Vicoustic tiles. They offer a service on their website whereby you submit your room dimensions and they will tell you what and where to place the acoustic product you purchase from them. I mean they design the layout for you. It is inexpensive, a small cost. I think it woks. I have massive bass traps and it’s a small room! My bass recording still come out boomy though… However, the bass tone is fantastic in my room! So, something wrong there I think but that’s another story. Great info here.

    Cheers Wozza!

    1. Warren Huart says:

      Hi @plap-disqus-f2217062e9a397a1dca429e7d70bc6ca:disqus Wonderful! Great stuff! Interesting that the Bass doesn’t translate outside of the room, did you ask John and any info on it? Have a marvellous time recording and mixing, many thanks Warren

      1. fuzzbox says:

        well… it’s probably just my ears/monitors. It been a problem for awhile now. I think I’m staring to get over it. I tried different techniques over the years, yours being the most recent and has given me better results but still a bit boomy. If I remove the RBass it’s gone but then I loose the overtones!
        Could it be the strings! they’re over a year old? I use a Radial DI track. I duplicate it two times. I keep one as the DI and process it as you do (from your video) the second DI is them fed to an Ampeg Bass Amp Model plugin and processed as a mic-ed cab (again as your video) the third is sent to softtube for distortion and blended back. Since I duplicated them from one source I don’t have an issue with the phase. I’m getting better but not fast enough! lol ☺♫♪♫

  8. Danny MacNevin says:

    Thanks Warren / John. Great stuff! I’ve always been a hands on, the more I can learn the better kind of guy! The photo I’ve attached is my room (it was still in the building phase) however, in the bottom left of the photo, you can see I had bought a book a couple years ago called “Master Handbook of Acoustics” by Ken Pohlmann. Some of it is quite complex, but there is a lot of useful information in there as well. The panels I’ve installed are from “Primacoustic”. Each panel is 6lb high density glass wool that is covered in a rugged acoustically transparent fabric. So far the room sounds great, but I’m just starting to track in there… Hard to tell from the photo, but my outer speakers are about 6 feet from the walls, and there’s enough room to get behind the desk for wiring etc… so the mix position is at least 8 feet from any wall, with the panels placed to grab early reflections. If, John sees this and anything jumps out at him as being wrong or problematic… please tell him to let me know! Thanks again!

    1. Warren Huart says:

      Hi @dannymacnevin:disqus Great photo! That looks like a fantastic studio!! Did you post in the Forum with John? Have a marvellous time recording and mixing, many thanks Warren

      1. Danny MacNevin says:

        Yes I did post on the forum with John. You’re having a hard time keeping up with all the posts Warren…lol but that’s a good thing… because you’re busy which is good, and obviously you’re getting more subscribers, which is also good. Produce like a Pro is the best informative site, hands down! Keep up the great work Warren! Danny.

        1. Warren Huart says:

          Hi @dannymacnevin:disqus Haha yes thank you I am very busy, but my focus is on the Academy. As time goes on you’ll start to see all of my ventures focusing towards this. It is REALLY important to me to build this community! I value it so much!! Have a marvellous time recording and mixing, many thanks Warren

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