I have run across a reference to Bozak using Wharfedale speakers, at least woofers, in 1960’s vintage Bozak speakers. Could this be true? Wharfedales did sell their speakers and crossovers along with instructions for building speaker cabinets. I am sure Rudy Bozak knew Gilbert Briggs of Wharfedale and the cast Zinc framed Wharfedale speakers are very good even to this day so they would have been an excellent choice for Rudy Bozak to use in his designs.