A# you know, Canterbury has that rich, tactile mid-bass and midrange that make it one of the most emotionally satisfying experience. IME, when a sub or pair of subs integrated carefully like my REL’s; they flesh out the much needed foundation without ruining the Tannoy magic. REL subs isn’t just there to add bass, they unlock ambient cues, and spatial depth beautifully. This is one of those things, you have to experience and decide for yourself.
As far as Canterbury’s ports, I found the sweet spot with them half way open since my room (15’ D x 30’ W) is fairly large and acoustically treated.