Those mini traps look great!
Ethan Winer, the designer, originally published an article in Electronic Musician June '95, thats now on his personal website
www.ethanwiner.com. It details his original design of bass traps using 703 & 705 frk.
He moderates an acoustics forum to answer questions about the old designs and new products.
He stated that it is not 703 or 705 in the mini-traps, but he has a acoustic material specially made just for his company.
In his orginal article he built the traps into the walls, Then to sell he made the first real traps from 6' to 7'6" (portable) but obiously real heavy! Now he has the minitraps, which I am sure are great!!!!!
Personally I have no $$$$, from buying a Lawson,and vintech!!!
I made I hybrid desgin that I have almost completed.
I made low abosorbers to hang that are 2'x 4' like the mini traps , so they dont weigh a ton, but follow the original plans detailed on his personal website. He states on the forum that for the mid frequencies you can just hang the pieces of 703 or 705.
I made 12 low end abosorbers which are 4" deep and the front is 1/4" ply and Mr. Winer states that if you are not building them in the walls, that the back has to be 2-3 times thicker than the 1/4" vibrating front panel. So I put 3/4"ply on the back. The insides are a sealed air cavity w/ the 703 1" frk on rails allowing it to vibrate freely within.
The 703 comes in boxes of 12 so two boxes is 24. I can double up on some pieces to make 2" thick, have enough for the deep bass absorbers, and some left over to just hang. All for about 350.00 $ american $
I am going to be done soon, it is just a pain trying to get the 703!!
Ethan Winer is my hero for being so gracious, as to publish a cost effective way to treat a studio, a bargain prices.
Its people like him and all of the helpful members here at geraslutz that make
recording a little more affordable for us poor musician types...Now I just wish I new about these bass traps a long time ago, and had bought a tascam trs8 instead of the 3 grand I spend on a mac and a motu 2408 when it first came out!!!!
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Todd Seibel
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Albert Einstein slept on avg. of 11 hours every night! So lets all go to sleep and get less dumber...