Kenjit, you are so narrow minded. You seem to look at a few commercially available speakers, most likely via magazines or internet. You cannot get the whole speaker specification from that.
My speakers have a page and a half of specifications, and also the availability of any of the engineers/ designers.
My other set were installed by the actual designer/ builder from the US. I had a week to go over the specifications as he “tuned” the speakers to the HiFi equipment and room. He flew to Brisbane, AUS.
Kenjit, it’s obvious that you have a limited appreciation of what speaker specifications you need. Live with an associated engineer for a week and learn what it’s all about.