Viable solution for difficult corners?

[datune]

Hello!

In my room (13.12ft x 10.5ft x 8.2 ft), there's only one corner that could be treated traditionally. So I figured what if I bought glasswool rolls, and just put those in a corner, floor to ceiling.

However, three questions about this approach and material used (http://www.ursa.be/_files/TFURSAhometec.pdf.pdf):

1. The plastic that is wrapped around the glasswool, will it allow enough to go through to make this usefull, or does it have to go off?

2. Is it better to have them spaced away, or just push them all the way into the corner?

3. Seeing how one roll has a diameter of ~ 1.5ft, will the material's mass which according to the pdf is 22-24 kg/m3, be enough for good bass trapping, or is this pretty much useless? (i hope not cause I already spent the money, ~ $95 / roll )

Btw. the glasswool is 10 cm (0.32 ft) thick, but it's heavily compressed while wrapped.
One roll has about 19.7 ft x 3.9 ft of glasswool, so quite a lot.

Thanks for any input!

[Ethan Winer]

Originally Posted by datune

1. The plastic that is wrapped around the glasswool, will it allow enough to go through to make this usefull, or does it have to go off?

Leave it.

2. Is it better to have them spaced away, or just push them all the way into the corner?

Push it tightly into the corner.

3. Seeing how one roll has a diameter of ~ 1.5ft, will the material's mass which according to the pdf is 22-24 kg/m3, be enough for good bass trapping, or is this pretty much useless?

I'm sure it's fine, and the density is higher when it's bound tightly.

--Ethan

[datune]

Hello Ethan!
Thanks for your reply.

Just right now, I was rereading your Acoustic Treatment and Design for Recording Studios and Listening Rooms page, which I had read last I think a year ago or so, and I discovered that you were actually WAY ahead of me (no suprise there I guess ;-)

Another great and inexpensive way to make a bass trap - if you have a lot of room - is to place bales of rolled up fluffy fiberglass in the room corners. These bales are not expensive, and they can be stacked to fill very large spaces. Better still, they are commonly available and you don't even have to unpack them! Just leave the bales rolled up in their original plastic wrappers, and stuff them in and near the room corners wherever they'll fit. Stack them all the way up to the ceiling for the most absorption.

However, is it a requirement to have A LOT of room (ie. when doing this in a room like mine, which is 13.12ft x 10.5ft x 8.2 ft), or did you just mention that cause usually people are not willing to give up space?

You know, sometimes I wish I would have never learned about acoustics, it seems that lately it's all I am doing, reading for HOURS on end, seeing all those superb studios, getting frustrated along the way, spending weeks trying to find alternatives for 703, 705 (not available here), buying a test microphone, only to realize that even after weeks of reading about the subject, it's one thing to actually have the waterfall in front of your nose, but a totally different one to REALLY understand and interpret it! It's moments like those that I wish I could just go ahead and say: "Ethan, here's a first class ticket, go crazy and let me know when the room is finished".

Alas, reality stands in the way

<back to even more reading>

Ps: Thanks again for all the information sharing, and thanks to gearslutz too. I find myself returning here for reading on an almost daily basis, multiple times a day (!!!).

[TroyTempest]

I would cover them with some fabric, or try to get paid by URSA for advertising space.