Acoustics, walls and what they're made of?

[markusA]

What are your findings on the effect of different wall materials?
wood vs drywall vs concrete for example?

When I moved to an appartment building my bass improved considerably.
(Wood and drywall -> Concrete)

[Pano]

There is a lot of published material on the subject, and much of it can be hard to understand.

Thick concrete will be reflective of even very low bass. Wood and drywall are "flexible panels" that tend to absorb bass. (It takes energy to flex them.) Most of the best sounding rooms I've heard were a mix of stone, plaster and wood - with a fair amount of furniture around.

[markusA]

That's probably why I don't need the bsc anymore.
It does add another dimension to speaker building.