Nov 19, 2005 02:26 pm oh, yeah i dotn have to worry about electric guitar's/bass's. I have both a bass and guitar pod xt's for it.
acoustic treating?
Posted on Nov 19, 2005 02:25 pm
meltdown5
Faze 2 Studios
Member Since: Aug 15, 2005
Hey guys, I'm trying to acousticly treat my room, to get ride of the masss amounts of reverb. and im trying to do it cheap. hah. I was thinking. you know those eggcrate mattresses? the tan ones that are all bumoy? do those work good? I mean, I think they would be great, if i cut them into shapes... also, how shoudl i place them? my room is medium sized. Just guessing my room is about 12ft by 10ft then its 8ft high. I plan to have liek to main corners of the room for use. I was thinking one of the corners i can have my vocal/acoustic instraments, and acousticllay treat that. and one corner i have my drum set, and i want to take some reverb away from that. As the room is now, it have crazy flutter reverb, and i need to tame it a little. How woudl I treat the corners so i can make them dead sounding?
thanks
Melty
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Nov 19, 2005 02:26 pm oh, yeah i dotn have to worry about electric guitar's/bass's. I have both a bass and guitar pod xt's for it.
Nov 19, 2005 02:33 pm Yes, the cheaper foam you speak of will work pretty fair for what you want. It is not nearly as dense as the higher quality stuff you would get from Auralex or the like but it will indeed help dampen some of the room reflections.
As for placement and size well that is totally dependant on what you want. For size I would say that 2' x 2' squares are the easiest to work with. It will allow you to experiment a bit with placement and the amount you put up as well.
You dont really want to completely cover the walls with it as you do wnat some reflection's. So I would start out with minimul amount and go from there.
Nov 19, 2005 03:26 pm I just did my room with some Auralex knockoff stuff that I found on ebay (about half the price). The thing is with foam is that you have to get as much density of foam in the room to reach your desired sound quality. Proper acoustic tiles will absorb more per square foot so you don't have to wrap your whole room in the stuff.
Nov 19, 2005 04:40 pm BeerHunter has it right. Density is the key factor here on how a product will absorb. I prefer to use the Auralex stuff as having tried many of the others with poor results. However my room is used for more profesionall results then some may be seeking so the lower priced foams may be just the ticket. You will actually be able to see the differance by giving it a squeeze. The Auralex foam does not compress as easily as the lower priced foams, and some expensive knock off's trying to be Auralex.
Then end result is the less dense the foam, the more of it will be neede depending on the results needed.
Nov 19, 2005 10:58 pm I got some of that tan eggcrate matress stuff... pretty cheap.. 3 queen sized matresses for 30$. but what do you mean dense? the more dense the better? i thought you wanted a farbic that has a lot of pores?
Nov 20, 2005 01:28 am With a dense foam it has the ability to control the reflections rather then absorb them fully. With a less dense material it will have a tendancy to absorb a lot of the high frequancy and that isnt real good for listening to true sound.
As I said in the above post, start with small areas and add more from there. To much and it will give you an absolutly dead room.
Nov 20, 2005 01:51 am well i was thinkign setting up some basstraps too.. so i mean, even it it takes some highs, and some lows.. it will have the direct sound. so i mean.. all good? and i can add reverb later.
Nov 20, 2005 03:45 pm foambymail.com has quality foam at great prices.
don't go overboard with it either. stick to treating the areas that will receive the most direct signal. a way to do this is to put a mirror against your monitors and treat the area you see. Most of what you'll treat is going to be ear level when in the mix position and behind and above your monitors (Reflection Free Zone).
In a room that size you aren't going to reproduce bass effectively no matter what you do but i agree that you'll need bass traps in the corners... not the foam made for corners as that is just broadband absorption but look into geeting a sheet of 703 fiberglass from Owens Corning and use a 1 inch thick sheet and wrap it in burlap (cheapest) and mount that in the corners leaving an airspace of about a foot. It's the airspace that kills the bass. You shouldn't have to do this from floor to ceiling either, just the RFZ.
This isn't the perfect scenario but it should do very well for you at the best cost.
Nov 20, 2005 05:35 pm You really dont want to aim at taking away any frequancy, just taming it and preventing to many reflections. So as we have both stated here, dont over do it. Start with alittle and go from there.
Nov 29, 2005 09:22 am There is some really good info here:
www.ethanwiner.com/acoustics.html
As far as the bass traps, I have found the OC 703 difficult to come by. A slightly less effective but functional substitute is acoustic ceiling tile wrapped in acoustically transparent material. It is also loads easier to hang.
In addition to the excellent advice given so far, (absorbtion and bass traps), my suggestion is to compliment them both with a little diffusion, such as a full book self opposite your monitors.
Nov 29, 2005 09:34 am Hi netstat, welcome to HRC :-)
Ya know, the absorption boards I built for my studio also work as basstraps (sort of).
It's 4' x 4' square with a 2x4 frame, thick plywood on one side and burlap or some material on the other, the center is filled with insulation or some other soft, absorption type material...If you hang those on the wall, spaced out a few inches from the wall with the material facing out, the back (the plywood side) and the wall to act as a quasi-bass-trap sort of thing...not the best, but those things are cheap to build and are effective.
Dec 01, 2005 07:50 pm If you're decent at math you could build some diffraction grating diffusers based on Dr. Manfred Schroeder's theory. There are no diffusers that even come close to these diffusers. You can build them out of anything reflective, plasic, metal, wood. If you do a web search of "Shroeder Diffusers" or "Diffraction Grating Diffusers" or just "Grating diffusers" you should find a lot of information on them. I'm surprised these things haven't trickled down more to home recording. They are simply the best diffusers one can have. "RPG Diffusing" has developed a lot of diffusers based on Schroeder's findings. You can check there website to get an idea of some of the things that are dominating the field of acoustics. These things have revolutionised the way rooms are now treated acousitacally.
If you find them too complex then there some good suggestions on wideband abosorbers already. Just remember that a wideband abosorber will gennerally abosorb between 125Hz and 4kHz. I would also check the room for any standing wave issues. I can promise you that you are going to have issues being that your room is well under 1500 cubic feet.
Dec 01, 2005 10:10 pm i think the recommended density is approx. 2 lbs per cubic feet
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