Thanks for this addendum! Really helps the end user out. Hope this comment gets pushed up.

Yup. I predrill everything. I countersink the heads too.

sound will also resonate with pine -- the argument could go both ways. thank you for the comment about pre-drilling, spot on!

@@ButBigger42 I was taught "if in doubt drill it out" and I always go by that now

@@DeRockTucker You're welcome! Though I'm not sure the pine or any material would cause standing waves inside the frame. I mean it would, but the insulation would take care of that, the wave length inside a 32 inch panel is roughly 370Hz which is where these batts eat up a lot of the frequencies.

I'm sure some netting like bird b gone would be perfect for that application. You can attach it underneath the fabric.

Michael Douglas thank you

Fab Voixoffnet thank you

Not a problem

Glad you enjoyed it

Glad you liked it!

Tony Mor Thank you! Yeah if you have any questions let me know if you build your own!

KOOL DRIZZLE Thank you, yeah it’s been a long time coming!

Laura Brown piss off, spammer.

Thank you too!

Tony Draper Thank you for that, I appreciate it

@@TrueSoundTV how flammable is that weed control fabric?

it is indeed a dark path filled with tears and blood

Thank you! I appreciate that

Producer Reef thank you! So I used 1/4in Baltic finish grade birch on the sidewalks

thank you!

If you can breath through it it's probably fine

I’d love to know this also.

Yes throughout the entire build process, it was measured everytime i installed a portion of absorption or diffusion!

correction "Done", "Don't"

Did you get any info on this by any chance? I am thinking the same thing.

@@manuellujan5625 Unfortunately not until now. But i think i´will try it. Let me know if you get informations, too

two layers and an air gap would work perfectly. If you're making bass traps try to add as many layers as your room can allow it and add an air gap as big as possible.

Air gap in between thicknesses? Not the best idea. ie.; 4" fluffy - 4" gap - 4" fluffy - wall Not a good use of material. Best performance is had with absorption material then air gap before boundary. ie.; 4" fluffy - 4" fluffy - 4" gap - wall 👍 For the same 12" you achieve better absorption and down deeper in frequency.

I have a degree in acoustics . U want the gab to have the lenght of 1/4 of the lowest wavelength u wanna absorb. Fiber-gab-wall. Nothing else. Btw if u can afford more material instead of the gab do it. It will be better. If u already have absorbers and u wanna boost their effectiveness without spending a doller. Do it ^^ cheers

If your talking about the soffit mounted speakers, it was mentioned a few times in my full studio build series

Right on, I've watched and search and didn't see anything. Thanks anyway.

axe76man they are my custom built monitor speakers that I built using three-quarter inch MDF, two 8 inch woofers, with a three-way crossover.

They're less prone to splitting because of the design, that does not mean they will never split wood...

The tests for rock wool are good for sound absorption. It absorbs both low and high frequencies, and is used in many many many studios. It's also far safer than fibreglass. Is it absolutely safe? No, I wouldn't put a bunch around my bed, but it does break down and get cleared from your lungs.

Jimmy yes, I'm aware of that, but it's not meant for acoustic treatment. It's for thermal insulation and absorbtion in a residential home to be used in a wall cavity. The problem with building insulation is that for mid's and high's, it over absorbs in the 125hz to 500 hz range. For using in a low frequency pressure activated device, it's not porous enough as a full material. For mid's and high's, Look at the Fletcher Munsen hearing curve, at the range between 125hz and 500hz. It actually has a nice smooth slope. There are other products designed to that curve, which will yield a more natural quality.

@@Oneness100 Can you name some of the safer to use materials to replace rockwool? Thanks!

@@devalah After using and being in rooms with a lot of different materials from different companies, the best sounding absorption product that I have found was the acoustic foam from a company called Acoustic Fields. The reasoning is they have developed their own foam which has an abosption coefficient that's closely matched to human hearing. If you look at the absorption curve of the Fletcher Munsen hearing curve at the frequency range of 125hz to 1000hz, there is a gradual slope. What happens with most building insulation is that they weren't designed for that curve. Most of them were designed for thermal inslutiaon and sound absorption to be used inside a wall.. Acoustic treatment for music/speech has to be developed for that application. Now, after doing a lot of research and reading, the reasons why most people use Building insulation is for the wrong reasons. They use it because it's readily available, it's cheap and up until fairly recently, that's about all that people knew about. Being that Acoustic Fields is a small company and doesn't have the shear marketing power that these other companies have, not a lot of people have used it. Also, if you look at their videos of customers that have switched, they have typically switched from using building insuatlion, like RockWool or some other traditional absorption material. And I heard the exact same thing they did. It's just a more natural sound quality and if you are a recording engineer, you probably won't have to touch the EQ all that much because you don't have to compensate for the absorption curve of the material you are using. Also, Acoustic Fields had absolutely the best low frequency absorption products on the market. They figured out to use activated carbon, which they have patents on and I read a study that was done in the UK at a University where they tested activated carbon and it is actually effective down to even 20hz, which no other material can do. It's due to the density and it's porosity of activated carbon. it's very cool, indeed. They are expensive, but they are the most effective. I know, I sound like an advertisement, but I'm just recommending their products after using and have been in studios that used the traditional materials. Without a doubt the Acoustic Field's room I was in was just absolutely head and shoulders the best sounding room I've ever been in.. the first thing to do in ANY room where you are dealing with full range speakers and/or instruments is to deal with the low frequencies. The reason is they are the most difficult to deal with and it's the most expensive. Once you get a handle on the low frequencies under 100hz, then dealing with mid's and high's above 100hz is easier, but you can better hear the differences in materials. go and check out their video catalog, they have hundreds of short videos ranging from general information, to more specific information about acoustic treatment. And they even cater to the DIYer, so you can just buy the raw materials from them to build your own frame for acoustic foam with a fabric covering, etc.

Klipsch I think.