In the bottom picture are the very small Kiso Acoustics entry level speaker. They had a 4" woofer and 1" dome tweeter. The sound from them was amazing.
The cabinets are built by Takamine Guitar in Japan. The structure is very much like a guitar. thin wood with similar braces inside. The cabinet is made to resonate with with the drivers.
They produced much lower frequency than you would expect. If you ever get the chance to listen to them don't miss the chance.
That said the price started at $9,500 plus stands, never the less they were great. I went into that room 3 times.