First Panel Done !!!

Posted: Mon Jun 09, 2008 9:12 pm

Didnt take long at all. Maybe and hour. Next ones will be quicker. I will assembly line them. Im using 2" Roxul 60 panels (2' x 4'). For the lumber I used 1x3 premium furing strips (Lowes). I cut those at 4' for the sides and 25 1/2" for the top and bottom. I joined those by utilizing a corner clamp and 1 1/2" drywall screws. I pre-drilled and c'sank the holes for a flush finish. I then rounded all sharp edges. Next I stretched and stapled the burlap (JoAnn Fabrics). Then I placed the Roxul panels in. They were a nice tight fit. When I was at Lowes I bought some 24" insulation hangers. I thaught they would be over 24 " wide, and went ahead and got them. Well they are exactly 24". They are designed for 24" on center building applications and are put in between the joists (with a bow in them) to hold up insulation. So I was thinking at least 25". Nope !!! But I got them to work by drilling some holes for them to stick into the corners. The next one I will staple some old 1/8" molding I have onto the inside (at 3 places) to shrink the inside dimension so I can put the wires straight across. I will post a pic of the next one. I am making 16 of these (1/2 black and 1/2 white) to go with the red walls in the control room. The black ones I am going to paint the wood edge facing out black. You can see from the picture the wood showing through. Anyway, Im gonna head back out and get some more done. Here are some pics

Posted: Tue Jun 10, 2008 8:29 am

Looks great! Very clean and I like the black on red look. It'll look and sound great once you have 16 around the room. Make sure you space them off the wall several inches for maximum low frequency absorption.

Posted: Tue Jun 10, 2008 10:35 am

I going to do some 4" corners ones. The others I planned one mounting flush to the wall. Will that be fine ?

Posted: Tue Jun 10, 2008 3:03 pm

whats the complete build price on one of these?

Posted: Tue Jun 10, 2008 4:53 pm

Will total it up at the end and post. I still need to buy the mounting hardware. Here are some more pics. I have all the frames together. Took a couple hours, not to bad. I will stretch the burlap on them tomorrow.

Posted: Tue Jun 10, 2008 5:02 pm

BushmasterM4 wrote:

The others I planned one mounting flush to the wall. Will that be fine ?

For the maximum efficiency, leave the 2'' gap behind. As a general rule, the gap should be equal to the thickness of the absorbent material. Cover the back.
Thumbs Up

Posted: Tue Jun 10, 2008 8:22 pm

Groff wrote:

BushmasterM4 wrote:

The others I planned one mounting flush to the wall. Will that be fine ?

For the maximum efficiency, leave the 2'' gap behind. As a general rule, the gap should be equal to the thickness of the absorbent material. Cover the back.
Thumbs Up

Thanks. I may try flush mounting the wall panels first. The corners and the ones 45 degree mounted at the ceiling will hopefully work well enough.

Posted: Sun Aug 17, 2008 6:36 pm

This is great work. Congratulations. What is the different between these panels and absorption foam?

Posted: Sun Aug 17, 2008 7:51 pm

I too build panels with Roxul. Here's the rundown based on my research.

1.) Diffusion. Foam should be better at diffusion, because it typically it has a multi-faceted surface. I guess you could build a diffusor with Roxul, but it would be more work I imagine.

2.) Cost. Roxul is MUCH cheaper if you buy in bulk. I got mine from a building supplier and got it WAY cheaper than I could by a comparable foam product. Plus, the supplier delivered it to my door!

3.) NRC. The Roxul's NRC compared well to 4" pyramid foam, so they should have similar absorption qualities.

4.) Flame Retardent. The Roxul is virtually fireproof, while firproof foam is hella expensive.

5.) Location. Roxul is great for panels, in wall, and maybe even under floor (not sure on the floor thing). Foam is probably easier to deal with, cause you just glue it to the wall. You probably don't want to leave Roxul exposed... it tears my lungs up (asthma).

6.) Mold. Roxul is mold/mildew resistant... not sure on the foam there.

Anyone else wanna fill in some gaps or correct me?

Posted: Mon Aug 18, 2008 3:29 am

Weezy,

While on a technicality, foams are more diffuse than a mineral wool or fiberglass panel, the open cell foams are generally considered to be absorbent materials in the same family as mineral wool and fiberglass.

There are very few foam solutions that are close to the absorbtion coefficients of mineral wool or denser (3lb/cu/ft and higher) fiberglass panels.

Diffusor's are generally a hard surface, who's shape reflects and refracts sound energy. Absorbers are generally soft surface materials that do not reflect or refract.

Posted: Mon Aug 18, 2008 7:02 pm

How many of these should I make for a square bedroom that is 12' by 13'? what about the corners?

Posted: Thu Aug 28, 2008 4:45 pm

My Control room is 16 x11 And I have 4 wall panels 2'x4'x4" and 4 corner bass traps 7' x 2' x 4" and a couch Wink

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