Originally Posted by Mattayus
The K-100s were one of the many cases of Celestion discovering a speaker could handle more power than they advertised and upgrading the name.
You can also find the K-85s (aka K-100s) in like, late 80s Peavey Butcher cabs. Those are pretty affordable, though not that common over there probably.
I actually passed up buying a mode 4 with the quad of k-100s for $180 in a pawn shop and still regret it. I had three cabs at the time and didn't have space. Hidden treasures. People legitimately don't know the speakers in them are worth way more than what they go for used. Thing was fucking trashed though. A past owner had bolted one of those tacky wall mounted beer bottle openers to the side.