Schuchhardt microphone

[Crackle]

KB's attempt at a column speaker, unfortunately they only used thin  1/8th inch ply for the drum, and drum it can tend to be in the effect on certain resonances, and a flimsy plastic inverted cone at the top. But they do have an interesting effect on the dispersal of the sound, making it more difficult to get an exact location of the sound source. https://www.radiomuseum.org/r/kolsterbr_ks651.html

Anyway I wonder how Dave is getting on with the testing of his microphone?

Mike