go to Jon Risch's website.
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Cut 3/8" foam core art board to any size you like. Cover the foam core art board with one or two layers of light Dacron batting used for quilting. Use spray craft adhesive to hold the Dacron in position on the front of the foam core, and use duct tape to fasten the Dacron on the back side of the foam core. Cover that with an outer fabric of your choice, again using duct tape to fastening the outer fabric to the back of the foam core.
Mount to the wall using heavy duty Velcro.
I have six of these in my living room. Most people think they're just decorative panels.
My 30"x30" panels costs about $15/ea, with the largest variable in the price being the cost of the outer fabric.
You're welcome Classical1. I'd upload a photo if I could figure out how.
I think the bookcase solution works really well, but from a diffusion standpoint rather than an absorption standpoint. This may be semantics, but there is a difference in the principles at work, IMO.
Bottom line, if echo is reduced, then the method works.
A cheap method to help with boomy base is to take a few of those corrugated cardboard boxes from your local grocery store (in particular the ones with those 1-2" holes along the sides) and stuff them with pink insulation material. You can then put one upside down box into the other, effectively making a cube, or leave them open on top. Wrapping them in a soft cloth will also help with aesthetics. Unless you find the "Chicita" logo appealing.
These will work well, placing 2 behind the speakers in each corner and two behind the listening position in each of the rear corners if needed.
Heck, I have an IKEA couch wich has these huge, plushy pillows covered in some type of denim that has also worked well (well, well enough) when I was trying to convince my wife and daughter that audio can be fun .........
I suppose, that you could also cut up an old comforter and fasten the pieces to 1/4" 3x3 ft. pieces of plywood. I may try that.
Something else that comes to mind, would be a large plant at both ref. points. Of course, that would diffuse the sound rather than absorb it. I don`t suppose the diffusion would be as good as absorption. Just guessing.
Thanks Tvad, Perfectionist has quite a set-up. My problem still remains with the sliding glass door with vertical metal venetion blinds.
I`ll be using a corner set-up per bobby p`s suggestion for my merlins that are on order. Using a corner placement, I`m not sure sonically what will be experienced yet. Or, for that matter, where the ref. points would be.
I wonder if anyone else has used this corner set-up and what if any sonic benefits were achieved?
You can make frames out of inexpensive 1x2 lumber, which gives you 1.5" depth. Cut high-density foam (or other acoustic materials) to fit the frame. Then, go to your local fabric store and pick out your choice of inexpensive fabric (you will be surprised at how many styles and patterns you can choose from - even "artistic" patterns/colors). Then, stretch the fabric over the frames and staple. Hang as you would a picture frame. If interior decorating isn't your thing, take your girlfriend/wife/mom with you to the fabric store! You can make a lot of panels that actually look very good "artsy" for cheap. I did this and it worked. Then I got remarried and had to sell the whole house - dedicated room and all!!
If you want to use what pro recording studios use, as well as the manufacturers of high-end absorption panels, then you want what's known as "compressed fiberglass" or "rigid fiberglass."
Two of the more popular versions of this are the Owens-Corning 703 & Owens-Corning 705. This is a specialty item that you cannot find at Home Depot or Lowes, and depending on where you live, may have to be mail-ordered. If you can pick it up in-person at a supplier like I did, then after buying some spray-glue and fabric, you can make 2' x 4' x 2" thick pro acoustic panels for about $12 a pop! Compare that to the $50-$200 often charged.
Everything that you need to know is here: http://www.ethanwiner.com/acoustics.html
There's plenty to read & learn there to keep you busy for awhile. In fact I think that this site would be a great read for most A'goners.
I made myself a bunch of these and they much improved the acoustics of the room. And they look great too. They are also light-weight and easy to move around.