how to build bass traps

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HCMarkus
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Re: how to build bass traps

Post by HCMarkus »

Tonio wrote: HC, I found an outstanding modular broadband/reflective design I had in my book marks, unfortunately not on my home puter. I'll send you the link tomorrow. You may have seen it before, but it would be great if you have the time and tools. Alot- o elbow grease though.
Bring it on! We'll see how greasy we're feeling. I am striving for speed, but a great design is always hard to resist.

My plan right now is slat resonators/diffusors on control room sidewalls and possibly the front wall, too, constructed as false walls/panels and skewed from square to avoid flutter. The bass trap you noted in the back corner will be packed with fiberglass, and I expect to liberally use glass in all four corners of the room, behind the resonators, as additional trapping. If necessary, additional deep fiberglass can go high on the back wall near the ceiling, above the bookshelf that will serve as my poor man's diffusion. One big question is slat panel finishing: Do I stain and clear coat or just wrap everything in cloth and be done with it? I love the look of wood, but am ready to retire from carpentry and return to making music.

Floor will be wood or laminate, with broadband absorbers floating above. I plan to do at least a fair amount of surround, so am aiming for limited, but balanced, reverberation. The big room, which will be refined only after the control room is happening, will be very lively. The office/iso room (10-11.5 x 8.5 x 13) will be very dry 'cause I think it is too small to develop pleasant sounding reverberation.

Anybody have plans for those cool "skyline" style diffusors made from wood like they have at Skywalker Sound? (see last month's MIX mag.) I could figure out well diffusor calculations, but never grocked the skyline number theory. It would be fun to make some panels like that, maybe for gobos, like at Skywalker. And they look so very swell.

Did I say I was ready t retire from carpentry? :lol:
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Tonio
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Re: how to build bass traps

Post by Tonio »

http://johnlsayers.com/Studio/PDF%20Fil ... fusors.pdf

elbow grease?? check it out!!
HCMarkus wrote
Did I say I was ready t retire from carpentry? :lol:
AS far as finishing the slats, I dunno, I left mine bare wood. I suppose it would look nicer stained or a coat of poly. Raw wood will get darker as time passes so maybe a coat would be best? Up to you whether stain or poly and the integration of the rest of the treatment /vibe. You have a nice sense of esthetics from your previous studio, so I'm sure come to a good design.

Yeah stuff it thick on the upper rear corners!!

Watch out getting that duffusion near the the mix position. I would temporarily put them up to where you think you'll like em, and do some listening tests, you may be suprised.

Skylines hmm, I did consider thsoe, but I don't have the space :oops:

T
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Tonio
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Re: how to build bass traps

Post by Tonio »

Mac Studio MAX 2TB/ 64GB RAM / DP11.2 / 828ES//
MP 5.1 3.33- 3 duo / OS10.14.6 / RX580 /DP10.13/828ES
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HCMarkus
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Re: how to build bass traps

Post by HCMarkus »

Too Cool with the skyline calulator duester! Thank you.

The John Slayer poly/slat variable design looks just a tad ambitious to me.
mandobilly64
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Re: how to build bass traps

Post by mandobilly64 »

I made bass traps out of Owens Corning 703. It comes in 2" thick x 2' x 4' panels, so I used 4 in each corner, only had to available in the room, 2 deep and 2 high, at a 45 degree angle in the corners of the room. Behind these panels I stapled some regular 6" thick wall insulation to the very back corner from floor to ceiling. There is an air gap between the 703 and the insulation. I made some angles pieces of wood out of 2" x 4" and mounted those on each wall to the sides of the 703 running from floor to ceiling, then I made a lightweight frame that I covered with a red burlap material and mounted those frames to the 2" x 4" angled pieces with sheet rock screws. So the frames keep the 703 in place and hide them from the eyes. The idea is that the sound passes through but gets stuck from coming back out.
I also made a 6" frame with feet that stick out from behind it and placed 2 of the 703 panels inside the frame covered the whole thing with burlap and hung it from the wall to catch the direct reflection from my monitors, that helped a lot too.

Peace and good luck,
Billy
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