Concrete loudspeaker loaded with 4" fullrange driver.

Concrete loudspeaker column, loaded with 7" midrange and 3" tweeter driver.

Based on the legendary Russian satellite "Sputnik". Concrete loudspeaker loaded with 8" Tang Band fullrange driver.

Concrete loudspeaker column loaded with 5" inch fullrange driver. X-ray view with plexi allows to visual interaction. 

Lamp-like concrete loudspeaker loaded with 4" full range driver.

It can be hanged or stand on ground.