I am also about to build a dedicated 2 channel listening room, about 31 x 23 x 14. I am wary of building a lot of treatments into the actual structure that I cannot reverse. So, instead, I am planning to use the ASC ISO wall construction methods and then add treatments inside the finished space as needed based upon listening and measurements. Consulting with ASC. I also have many Stillpoints Apertures, which I will try to incorporate if possible and appropriate. Best of luck!
Anyone have experience with acousticfields.com or with using true pressure traps?
I am preparing to build a two channel listening room in my basement. Planned dimensions are 17’X23’X10’. Perfect chance to get it right since it is to be built from scratch. One chance if you will.
i have some experience with velocity traps (absorption), enough to know that when using typical absorption products, it is nearly impossible to effectively address room bass nodes without creating an acoustically dead room since fiberglass and rock wool traps are exceptionally efficient at absorbing mid and high frequencies and exceptionally inefficient at absorbing low and even mid-bass frequencies.
After checking out several companies online that specialize in room treatment, Acoustic Fields (acousticfields.com) stood out to me because they design and build pressure traps that precisely target specific frequencies (vs the broad-band behavior of velocity/absorptive traps) based on mathematical modeling identifying exactly where and what frequencies of acoustic anomalies will occur in a specific room and matching frequency-specific pressure traps in the exact room locations that reduce/eliminate problem nodes at the listening position without affecting non-target frequencies as velocity/absorptive traps do.
This approach promises to get quite expensive. I am wondering if anyone here has any experience with Acoustic Fields (or installing/using pressure traps) that would provide helpful input regarding their experiences.
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I participated in a call with Dennis @acousticfields.com this afternoon. He was friendly and helpful and came across to me as one who knows what he is talking about. The bottom line is that he offered his room design services for a substantial fee (which is completely credited toward a subsequent purchase of goods) and suggested that I go the DIY route, buying only the carbon and foam from him, due to my limited budget. It appears it will take a lot of carbon to build the complement of pressure traps (around 70!) needed to completely treat a room this size (17’X23’X10.5’). @arsh I briefly reviewed the description of the ASC ISO system on their website and it appears that it primarily intended for soundproofing. That is not a concern for me since the new room will be the only room in the basement and the exterior walls are cinder block and mostly underground. I am 100% focused on optimizing the sound quality inside the room itself. Did I misunderstand the ASC ISO system’s benefits? BTW I really like the concept of the Stillpoint Aperatures and hope to work four into my room budget. @4krowme I recall there was a product from Billy Bags some time ago that used a microphone and an amplified bass speaker wired out of phase that was hung in a corner from the ceiling to cancel room bass nodes. I thought it was interesting but it was long discontinued by the time I discovered it. Would that be what you are remembering? |
Dlcockrum, here you go...
"The Iso-Wall construction technique solves the three main problems with listening rooms: 1) it greatly reduces wall shudder; 2) prevents sound inside the listening room from getting out; and 3) absorbs excess bass energy by virtue of the flexible walls, turning them into giant membrane bass traps." |
Like you said it was a long time ago, but yes that sounds like the product that I remember. Wouldn't we all be better off with headphones? Ha! There are problems with making music any way that you have it. Still looking forward to your future experience with all this. The iso-wall is a technique that will get you most of the way there, but no doubt it would require some engineering advice. One thing that I like about it is that it is automatically out of the way from the beginning. |
Usually the most optimal solutions are mostly passive control, with some active control layered on top.
And using that active control, following the passive bass traps. |
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