PSB’s New Passif 50 Loudspeaker Is A Culmination Of 50 Years Of Work By Founder Paul Barton It's been 50 years since young Canadian Paul Barton formed PSB Speakers and began selling loudspeaker kits to this fellow students. To celebrate half a century of audio excellence, PSB is launching the Passif 50, based one the look and design of the original PSB Passif II speaker from 1974.