Best products for baffle material s ?

I haven't done this, but with so many responses, I'll throw it in, maybe someone can try it. For the past several years, I've been thinking of trying small Styrofoam balls, mixed with concrete and epoxy, poured in a mold and sprayed with an automotive finish... Still may try it someday.

That's interesting Tim. It invites thinking of other damping materials to put in the concrete. Do you think styrofoam has enough mass to absorb vibration? Maybe lead powder? Lead is not toxic sitting as metal. In fact the way Wilson used it in their speakers would do no damage to listeners either. It was encased in the x,y or z material. There must be other materials as well. My thinking is the styrofoam would virtually act as an air bubble. What are your thoughts?

Timlub,

I think Theil and Hales tried that years ago. Then there was the Swedish Rauna and the Danish Avance companies that made the entire enclosures out of concrete. All had a difficult time making any finish stick to these because of the alkalinity of concrete as it cures.

Good listening

Peter

Hi Peter. The new epoxy technology is changing decorative concrete cast planters, garbage receptacles, etc. Didn't Thiel use concrete baffles?

I've seen a few concrete enclosures. My thinking has been that the Styrofoam will significantly lighten the concrete while not losing anything in strength. Then I think of stacking different materials... one dampens the next, dampens the next etc...
I believe that the epoxy will be another dampening material and equally strong, the enclosure should be very dense and as well damped as any material out there.
No testing, nothing scientific about it, just a hunch that I'll have to try someday.