Good Evening,
Just found a DiY pair of Klarkson, in a thrift store with mint driver in them.
I have search the web, it seems to a one point a very popular alternative from the Tannoy DiY and Altec DiY.
The price was ok, and i want to refurbish them, it seems to be full range, a single driver that does it all. I like to do has a hobby Full range speakers, so will play with them and discard it in my annual yard sale! 
with respect, Any comment or info on them?
Was it first attempt to HiFi back then?