...need some rear wall diffusers

My control room is almost done, and I´ve started the acoustic treatment. I have sufficiant bass absorbtion and I´m currently working on some slat resonators and clouds. My rear wall has no form of treatment yet, and I´m not quite sure what to do. All my walls are non-paralell and is a shaped like a tall diamond. My first plan whas to cover the entire rear wall with auralex like diffusers because it will work out "ok" and look good. My entire studio is decorated and designed quite exclusive, so the diffusers have to look good. I know that this probably is´nt the first diffuser thread at this board, but I haven´t quite found what I´m looking for yet. Budget? approx. 150$ @ thanks, hawk

room dimentions? it´s built inside a 10´x 20´room, celing height almost 8´.

For that low a budget, if you're sure you want diffusion in your room you might want to consider a single, large, centered polycylindrical absorber. If you have fair building skills, you can build one for a lot less than you can buy a decent surface area of diffusion. IF you don't like it, very little money wasted - it should be oriented vertically at the rear center of the room, with 2" or thicker insulation glued to the inside of the plywood for damping - 4 or 5mm plywood should work fine, you'll need some 1x6 lumber to cut out arched struts to support the plywood. IF you need more info, let me know... Steve

as described in this thread? http://recording.org/ftopict-26031.html I´ve read that diffusion is not recomended in small control rooms, so are there any alternatives? completely soft and dead rear wall treatment? hard surface like treated gypsum? i´m eager to learn.

Not for Small Depth Control rooms, you have 20' of depth in your control room...Ample lenght for a bass wave to develop in size, so diffussion wont kill you :)

In a 10x10 room, you can never have enough bass absorption. Cover the back wall with 4" panels, or at the very least directly behind the mix position.

cfegela wrote:

In a 10x10

I thought he said it was a 10x20' room?????

Uh, yeah...what he said. :D

Hi, Hawk! I´d really recommend you to access www.ingenieriadesonido.com and check the 1D Diffusers (fantasy named 'Marthena'); then contact the people there to give you more information. They work as diffusers and, by consruction, as mid-bass absorbers. Really good functioning and good looking... Hope it helps. Regards. Chino.

Hey Chino Looks like a pretty decent product.....

All well and good, but does anyone remember this? Budget? approx. 150$ Unless materials are incredibly cheap in the land of Odin, poly's are about the ONLY type of diffusion that fits the budget IMO. Hawk, that's exactly what I was referring to in the thread at RO... Steve Any chance of posting a floor plan? We might make better suggestions with one...

Hi, thanks for all the quick answers! I´m just surfing through on a public computer, so i can´t post the floor plans untill tomorrow morning (gmt+1). btw. orange is totaly out of the question :lol:

Yeah, Giles! You should listen to them... They are really good. And, as far as I know, they are not that expensive. I had the opportunity to listen to them in many studios here in Argentina and some in Brasil. And I know they are selling to Europe and the rest of America. I´m going to use them in future works... Contact them for more technical info. The guys are very well informed, and very didactic. Regards!! Chino

btw. orange is totaly out of the question

Hahahahaaaaa!!! Yes, I know, Hawk. They come in blue, I think. But you can paint them any color you want... lets say... purple with green stripes... Hahahaa!!! Regards... Chino

yeah! purple will go well together with my "ten minute" sketchup illustration! it´s not very detailed, but it gives you the right idea... kind of...

I´ve also concidered a heavy curtain of some kind in the back of my control room if diffusion is´nt of greater value...

Where are your speakers going, and your desk? Steve

something like this...

The direction of angle of your walls is backwrads, the should angle out from the front not in from the front....

Yup; I suspected as much, which is why I asked the question :wink: Take a closer look at any of the plans John has drawn for members in the Design forum, and see which way the walls slant - there's a very good reason for this (just wish I could remember what it was :mrgreen: ) Maybe you can tell US, so we can see if you're paying attention :wink: :wink: If not, don't be embarrassed to ask; this stuff is ALL greek (unless you happen to SPEAK Greek, that is) until you've been around it for a while... And nobody here bites, or maybe just an occasional "nibble", we're just here to learn and maybe have a bit of fun... Steve

it´s already built and the cables has been layed under the floor, so it has to be this way unfortionately. I do not have the time to re-build the control room. drat...

Man, I'm sorry to hear that; in that case, if you can have a friend hold a fairly large mirror against the wall while you sit at the desk, have the friend move the mirror around the room (along the walls about half-way between you and the speaker locations) and place fairly thick mineral wool absorbent (like at least 3 inch thick, mounted with at least 3 inch air gap behind - 4" and 4" would be better in this case) mounted anywhere you can see either speaker in the mirror. These treatments should be fairly good sized, like at least 3 feet by 3 feet (1 meter square) or larger. If this messes up visual lines, you can make these treatments portable and only use them during mixdowns. The ceiling, unless it slopes upward to the rear a LOT, will ALSO need this type treatment at first reflection points - typically a 4' x 6' 91.5 x 2 meter) "cloud" centered side to side and halfway between speakers and your head, is what works. I hope this helps; I wasn't trying to make you feel bad, I had no idea you'd already built; the good news is, your wall angles will still eliminate flutter between side walls; also, it takes more of an angle than that to accomplish Reflection-Free Zone anyway, so you STILL would have needed similar treatments on the side walls... Steve

the room in it self sounds very ballanced at the moment. I would have to post some pictures and sketches for you to understand how I´ve treated the room. I´ll try to post some pictures soon. anyways, I´m gratefull for all your feedback and you did not make me feel bad, because I have a quite good feeling about how the room is turning out. later

awh! this did take a while... here´s some pictures...