Allison. Roy Allison and Peter Snell worked on parallel paths, both using surface reflections to tailor the sound. I had Allison 3's which used the corner, Allison 1's were in effect two 3's put together for midwall placement.
Larsen SC, 4, 6, and 8 speakers from Sweden.
Sonab OA-4, 5, 6, 12, 14, 116 and 2212. Designed by Stig Carlsson in the 60's and 70's. Later he made his own line, the Carlsson OA-50, 51 and 52.