Question for old-timers, before the Internet old-timers.

On another thread I discussed buying a random set of cheap, used speakers in order to transplant the drivers from my ugly Schneiders. I abandoned the idea but the wheels were already in motion. I had committed to buy some speakers with 11ltr cabinets for £1.

On the back the label says, "Made in Sweden for Tandy UK" & "Carbon-Fibre Woofer."
Tandy went bust last century, back when carbon-fibre cost a fortune. I just need to check with connoisseurs that I'm not emptying the contents of the Holy Grail down the crapper so I can make an Ikea footrest.