Bleh, 30 years ago I had some panasonics I bought at a PX.
they had either 18 or 20” woofers, 5 or 6 inch midrange and a horn tweeter with 3 buttons on the top for selecting which got more power.. drove em with Carver Silver Seven-t monos.
Those things were… loud and shook the rental house I had after ets..
cracked a few of the windows… the owner was not happy with me.. 22 and height of the rock era “and we had some fun.” I cannot even remember where or when I downsized.. but I always liked those speakers.