Not a huge amount of insight in this Sound + Vision blog post (hey, what do you expect from S&V?), but lots of cool pictures of Paradigm's manufacturing facility. About 250 people work at Paradigm, so they're not a huge company.

Compared to other speaker and electronics companies, Paradigm has always been very vertically integrated. They make their own drivers, cabinets, and even circuit boards. According to the article, Paradigm is now in the process of bringing more of their manufacturing back from China to Canada.

Paradigm and Anthem: Factory Tour | Sound and Vision Magazine

Also, the article shows the Martin Logan speakers being assembled in Paradigm's facility (ML's production line moved to Canada last year).