Any info out there?

Sold in Japan from 1978 to 1979 these 3-way, 3-speaker bass reflex speaker systems sold for YEN 42,500 with the Project 9000 component system. The drivers are a 12" cone woofer, a 4.75" cone mid range, and a ribbon tweeter, arranged in a symmetrical, mirror-image layout. Frequency response is from 30Hz to 20kHz; SPL is 93 W/m; maximum output is 70W into 8 ohms; cabinet is of rosewood vinyl veneer with a black knit grill; dimensions are 15" (W) x 13.5" (D) x 29" (H); and they weighed 47.5 lb each.