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Hi all,I have a couple of paintings by a friend of mine, each hanging just behind and above my speakers--about 18 inches above the speakers, which are (and can only be) a little more than a foot from the back wall, about two-and-a-half from the side walls.
The paintings are stretched canvas on a wooden frame, about 26 inches wide, 30 inches high, and 3 1/2 inches deep.
My question is: is there anything I might be able to 'fill' these paintings with so I could have a sort of camoflagued flat-panel treatment for absorbing mid and high range frequencies? I plan to get a pair of bass traps for the corners, but I'm wondering if this might help me in any way. So, can I do anything with these, and if so what?Thanks in advance for any suggestions.
Follow Ups:
The other replies have pretty much covered it.The paint ad the tightly woven canvas mean that mids and HFs will be relfected right off the picture itself.
You COULD get some mid LF absorption with some fiberglas or polyester batting behind the picture, but this would be minimal unless it was a BIG picture, and the thickness of material behind it was more than a few inches deep.
As noted in a post long ago, relatively open and light applicatons ofn paint to burlap or other suitably oepn cloth such as speaker grille cloths (which are available in black brown and white at best), canbe effective, as the amount of painted are is not too great then.
As Dave has suggested, dyes or other way to coor the fabric that do not add a solid layer of material to the surface are going to be more useful.
Jon Risch
I have dabbled at painting off and on for years and have tried what you are suggesting. The problem with your scenario is that the paint on the canvas and the canvas itself is too reflective to sound waves. You need material that will let the sound energy in and dissipate it. Jon says that burlap is the way to go- I tried it and agree. I will do some experimentation with air brush or watercolour on white burlap sooner or later. Hope this helps.
Artist's canvas is tightly woven, compared with the burlap that's OK for bass traps, etc. It's also primed to seal the fibers and the spaces between the fibers with a dense, adobe-paste-like primer. Oil paint pigment, when dried, makes a flexible sealant on top of that, and acrylic is effectively a completely sealed plastic wrap! So, based on what JR and others have said about needing loose, porous, and light fabrics to pass sound best, a painted canvas could be about the worst thing you can have in front of your absorbent layers.Now, inks and watercolors and dyes can be painted on porous and light fabrics that would likely pass sound waves properly. These would be fabrics like silk or artificial imitations. YOu might find these as kimono cloth, scarves, Asian paintings. On the latter, you have to make sure there is no paper or other dense backing, however. I was considering something like this myself to disguise my room lenses as murals or decorative screen panels.
I don't know if this would work for very light gauzy linens at all though, though. If it does, don't confuse this with the linen used in the above oil or acrylic artist grade "canvas". The fiber is the same, but the fabric is not at all.
and I've wondered about batik style treatment of burlap in that sort of setup.David Aiken
Thanks for the idea.
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