This is a classic Bozak 3-way speaker with the following components:
b-199a 12″ woofer in it’s ideal cabinet
two b-200x tweeters
b-450 mid range
high quality crossovers
These speakers have a warm laid back sound. They would be a good match for tube or vintage solid state gear. Very solid construction.
These are reasonably efficient speakers, so you don’t need too many watts to drive them!