QRD made of foam

Chcę wykonać QRD Dyfuzory http://i42.tinypic.com/2gv0xgl.jpg z pianki poliuretanowej do wyeliminowania efektu trzepoczącego echa. Czy zastosowanie właśnie tego materiału zachowa właściwości panelu?

karkatam

English:
I'd like to make QRD diffusers made of polyurethane foam to eliminate flutter echo. Is that material suitable for that purpose?

I've never tried Styrofoam, but RPG makes commercial diffusors using that material. However, there are different types of styrofoam. The type RPG uses is probably harder and more rigid than the usual type you see used for packing TV sets and other products. I imagine it is also more reflective because it's harder, and stronger. If you spend hours making a diffusor for your back wall, and someone bumps into it and knocks of some parts that stick out, you'll be very disappointed! So my general recommendation is to use something stronger and harder than Styrofoam, such as wood.

--Ethan

I had such a situation. Brand new absorbers, home made of course--> http://www.dzwiek.org/threads/4359-Absorbery-szerokopasmowe-z-Isover-PT-80 ....and drunk pal of my flatmate. He didn't know that the absorbers are not for hitting. I had made every effort to make my absorbers aesthetic. After that party I had to repair one of my absorbers to keep it looking good.

Having found broken absorber I was very disappointed... :/