Happy to help!

Agreed. Good audio is very important for all videos, but especially if you're a person in the industry as an engineer!

Glad you enjoyed the video. Cheers.

You have a fair bit of ceiling space to work with. You'll want to test that for sure, and yes you'll definitely want to air gap your panels from the boundary so that they work better. Typically you'll want to angle the cloud toward the back of your room slightly so use a suspension system that allows for adjustment. You could start with an air gap equal to the thickness of your absorber.

Hey hey. Thanks for watching and commenting. I think you missed a critical part of the video where I said this, "If space and money are no object I would always opt to fill the air space with more porous absorption." It's later on in the video, so make sure you watch the whole thing. Also the section about sealing the air space. Note that when you do choose to fill the air space with more absorption, you must be careful about the density of the material. It will perform better for you if you use layers of material with multiple densities (graduated density). Some people use 40-60 kg/m3 material as a front layer (something like OC 703 or Rockwool Cavityrock) then lower density material in the range of 20-32 kg/m3 behind it (like OC Pink or Rockwool Comfortbatt). It all depends on your depth! Make sure you do not use just the same density of rock wool for the whole absorber assembly, especially when the density is over 32 kg/m3 and the depth is 12" or more.

Hey hey. In general, you should be mixing at the ideal volume level for where your psychoacoustic perception of sound is as balanced as possible. IE where the Equal Loudness Contours are as flat as possible. For a small room, this could be as low as 73 db SPL-C weighted. If you want to minimize reflections in a small room, treat your room or use nearfield monitors, or both; don't try and achieve that with volume. If you mix too quietly, you'll dramatically overdo the bass in your mix. That's because you're not very sensitive to bass frequencies at low levels. You'll hear much less bass than there actually is, and then turn it up too high in your mix, which will equal a muddy mix that won't translate. To learn how to take the first steps in treating your room, watch this: kzfaq.info/get/bejne/e6mRraqr2trPhmw.html. Cheers!

Foam? There’s no foam in this module whatsoever. And nothing that is reflective at these densities and depths. I think you didn’t see the video I did about how these are made. You can check it out here: How to Build the ULTIMATE DIY Acoustic Sound Panels for Music Studios kzfaq.info/get/bejne/e6mRraqr2trPhmw.html The density of material you mention is very low. You’d only get into that range if you’re going beyond 8” depth. 32 kg/m3 is ideal for up to around a foot even, after least with rock wool it is. 10,000 Rayls. Read up on John Brant’s recommendations or Philip Newell for reference.

A single layer of this module won't do much at 30 Hz. But if you layer them, with air gaps, and use absorption of different densities, they can work wonders. They absolutely can control 30 hz and I have the acoustic results to back that up. My control room is made of very similar modules, layered, and using materials of different densities. I have zero issues at 30 Hz despite the fact that my Neumann KH420s cut off at 26 Hz, and the front back axial room mode is 28 Hz. Here's the design of the room: kzfaq.info/get/bejne/a7yiepV8xKuboX0.html. No fancy pressure-based treatments, no PRDs, no QRDs, no active trapping. Just the strategic use of porous absorption to make a non-environment room.

@@warpacademy That's what you should mention right away))) layers of them with air gaps. I know what you're talking about. i design room with the same principle now. How good is absorption coefficient?

I should clarify that I never said this is a "bass trap". This is a wide band absorber. A bass trap design would integrate a pressure-based treatment approach, graduated density, thicker absorption, range limiters or all 4. It depends on the room, the room cutoff frequency, and the cutoff frequency of the monitoring system. In terms of the absorption coefficients, they are frequency-dependent and vary based on depth and density. I discuss this more fully in this video about porous absorption: kzfaq.info/get/bejne/ibmea6t22K2coqM.html. And this video about the wide band absorption modules I use: kzfaq.info/get/bejne/e6mRraqr2trPhmw.html Hope that helps clarify. Cheers!