Bass Trap Fabric on the Backside????

[seen-da-sizer]

Originally Posted by ygayle

I'll be using room mainly for mixing, but also to record vocals and maybe some acoustic guitar. Room dimensions are 8 x 10 x 8.

Your room may be too small for diffusion. No need to worry about this (yet). You almost have a cube, not very ideal for acoustics.

The fabric prevents the escape of fibers, that could potentially end up in your lungs. Therefore if your trap/panel has an air gap, with having fibers exposed, cover it with acoustic transparent fabric. (like you would do the front)

If that fabric is not visible (like the back of a reflection panel, mounted with a gap between itself and the wall), you may use some cheaper, less "fancy" looking one like muslim, burlap, cotton, as long as it is acoustically transparent too. It can save you some money.

If there is no air gap between your trap/panel and the wall/corner, you can either use the wall as seal, or something like cardboard, paper, plastic, wood etc.


This is how I constructed my clouds and early reflection panels:



On the front I used speaker fabric at the cost of $7 per yard. The back was covered by a cheap stretch fabric at ~$2.50 per yard, that was spray-glued (mainly on sides and with very little glue) onto the back panel. The sides of the Roxul panels are covered by the outside wooden frame, no need for fabric there.

Detail view of the assembled panel (fabric in the back is black; grey on front):

[Insulation Man]

Most people use a different fabrics in the back due to the fact that you dont see the back, and that nice fabric is generally expensive. I've found that pasting canvas, or burlap serves well at $1-$2/yard for the back. In regards to 2" vs 4", 2" panels will absorb the higher frequencies just as well as the 4" panels, while the 4" helps with the lower bass frequencies. You should start with a couple of panels and the bass traps in the corners, and go from there.

Seen Da Sizer - Nice build on the panels. I like the stained wood frame

[seen-da-sizer]

Originally Posted by Insulation Man

Seen Da Sizer - Nice build on the panels. I like the stained wood frame

Thanks!

[chinni123]

Originally Posted by seen-da-sizer

On the front I used speaker fabric at the cost of $7 per yard. The back was covered by a cheap stretch fabric at ~$2.50 per yard, that was spray-glued (mainly on sides and with very little glue) onto the back panel. The sides of the Roxul panels are covered by the outside wooden frame, no need for fabric there.

Could you please share where did you buy speaker fabric for 7 dollars? I am also looking for as dark black as possible since I am intending to use for home theater.

[seen-da-sizer]

Originally Posted by chinni123

Could you please share where did you buy speaker fabric for 7 dollars? I am also looking for as dark black as possible since I am intending to use for home theater.

Parts-Express

The yard is $7.25. I you buy 10 or more yards, then the price goes down to $6.90.

Speaker Grill Cloth, Acoutically Transparent Cloth, Speaker Cloth, Dark Pure Black Grill Cloth, Patterned Grill Cloth, Amplifier Cabinet Cloth

They have the colors Black, Gray, Brown, and (off)White. The good news is, the fabric is 70" wide, which allows to cover large areas. However, the fabric is a bit on the thinner side. Since I had to cover a larger area, I used fly-screen underneath the fabric. Also keep in mind that the Black is not a 100% black. It was black enough for me though: