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69.151.210.5
Well, not quite $50.
Parts List (from wal-mart)
1) Polyester Battling (try to get 1/2" thick), largest rolls you can: $10/ea
2) Muslin Cotton (if you can breathe easily through the fabric, its a good choice): $15
3) cheapo curtain rods: $3/ea
at first reflection points & on rear wall (if a small room), simply fold the battling over & over such that it will lay like a bathtowel over the curtain rod (that you've installed on your wall) with aggregate thickness > 1" (play as you see fit w/ thickness). muslin cotton can be cut to just cover the front and will lay nicely on top of the battling w/o falling down (you may want to throw into dryer on "perm press" to get the wrinkles out).
this is about as cheap and effective a room treatment as ive come across, and if you're going into the postmodern camus-like hell known as wal-mart in the first place, you may as well make it good for your stereo.
net result, your room will look a lot more rubber-room-ish, but we're all mad anyways. its an asylum.
rgds
rhyno
Follow Ups:
I perfer sonotube (I hate the dead foam sound.
yes it works upper mids and up only, but made a huge difference in my larger open basement.
But the sound just opens up (sounds like a large open area like a field).
http://www.allchurchsound.com/ACS/edart/sono1.html
"At the same seminar....In a side room where the church was renovating a meeting room, we brought the Sono Tubes on-a-stick into the room while a few people were in the room talking and making other noises in the room. Bringing in even just 5 tubes made a noticable difference; the more tubes added, the better the room sounded........ In this example, we showed a group of church sound techs how the use of just two four foot long 12" diameter Sono Tubes cut in half can make a dramatic difference in the sound quality of even a $19,000.00 piano. The amplitude was increased in the lower three octaves, and the overall clarity improved a noticable amount for 90% of the attendees. (Cost of unfinished Sono tubes: $6.00)"
add some foam behind them if you want.........
a few years back I got some at Menards (maybe home depot has some).
4' long 12" diameter was $6.
The main problems with this approach is that the polyester will be very loose therefore low density and probably only an inch or two thick in total, plus not spaced off the wall by several inches.
All of these things add up to a treatment that is basically high frequency only, with very little effect at midrange frequencies and none at bass frequencies. You need considerably higher density and thickness for bass frequency effectiveness.
It may certainly help and if used at first reflection points only it shouldn't overly deaden the sound but beware of using too great a surface area with a narrow band absorber like these. Too much will end up producing a "dead" sound. If you decide you want more absorption, make the treatments thicker and find some way of compressing the batting in order to increase the density. Don't build more the same and simply increase surface area. You'll get better results using the same total amount of batting but increasing the density and/or thickness of the treatments you have, thereby keeping the same surface area, than you will by making more identical treatments and therefore increasing the surface area of the treatments.
David Aiken
Almost as simple as JR's SQ&D Bass Traps
I'm sure someone could dress it up even more if they could sew, or get someone to sew for them
Hiring the sewing out would bring the cost way up though
Julien
"There's someone in my head, but it's not me"
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