Anyone remember Studio Design speakers?

I guess you are not familiar with Tech Hifi which was a chain of stores based in the Northeast USA. 

There really is very little on the web

I thought some models bore a passing resemblance to some Ohm speakers and considering the “connection” between ownership of Ohm and Tech Hifi, a resemblance is not surprising. 
I had the 46’s. 10 inch woofer, porter box and what was a very common tweeter- phenolic ring cone tweeter. 
Crossover was bare bones- a single capacitor as I recall. Efficiency was pretty good too 

Actually, if you search out old ads - say 1977 or so, for tech hifi, you will see Studio Design advertised.