Skyline Diffusor od stirodura

[mrspis]

Zanima me koliko je efikasno praviti Skyline Diffusor od stirodura? Kolika ce biti zvucna razlika izmedju stirodura i drveta? Konkretno me zanima koja je najniza diffuzivna frekvencija tog materijala, kolko je efikasan? Znam da nema efikasnost kao drvo, ali jel ide bar do 600hz? Mnogo je jeftinije praviti od njega, pa se zato raspitujem. Ispadne mi 6x jeftinije da pravim od stirodura... Pravio bih ovako nesto
http://img266.imageshack.us/img266/6519/difuzor2.jpg
citao sam ovde komentare lika koji je vec pravio
http://www.gearslutz.com/board/bass-...-diffusor.html
Originally Posted by Michael Loomis
Do you have any idea how the use of styrofoam affects performance compared to wood? I certainly understand that weight becomes an issue very quickly when using wood (especially with the large diffusors)! But sonically speaking, can you get equal results with the lighter styrofoam material?
Depends on frequency. The blue styrofoam is 32kg/m^3 and the lightest wood is about 2-300kg/m^3.. Quite a difference! The foam reflect down to about 500Hz where it starts absorbing, having a crossover zone with both reflection and absorption extending 1 to 1.5 octaves below that. Absorption works down to about 150Hz on this. So it should work fine for mid and high end, while wood/concrete etc can provide diffusion to lower frequencies, while avoiding the absorption - which may or may not be a good thing.

Ako stvarno moze da reflektuje cak do 500hz a ispod toga pocinje da abzorbuje onda mi to skroz odgovara posto ovaj koji ja planiram ne bi trebao da ide ispod 573hz!

Must admit that I've spent some time just sitting there staring at the diffusers. It sounds a bit muffled. Much clearer when turning the other way around, facing the speakers! :P Seriously: Sounds better than it ever did before! Which may not say much in itself but I haven't found anything like it around my part of the world. If only it was possible to take a picture of the sound! It would look so crisp as to almost be unreal in a computer graphics way.

Kolko vidim, lik se odusevio kako rade, tako da kapiram da ce se isplatiti.
http://img692.imageshack.us/img692/9154/p1060518j.jpg
ovo sam uslikao u toku pravljenja prototipa danas