Hi!
Glad someone gets something out of this thread!
Quote:
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.