All in the family.

Paul Klipsch had a fellow speaker-designer/manufacturer friend in Dallas, who shared his love for speakers with high efficiency. Jack Frazier was his name. Frazier made speakers for both home and professional use.

We've recently adopted these examples of Frazier professional sound system speakers (model F-12-4-H Ceiling). Notice the fluted ports along the back edges of the speakers. These are very nice sounding, and stunningly efficient.