Mission 73C

Little is documented about the Mission 73C beyond two mid-1990s mentions in HiFI-Stereo. They're enough to place it as a compact two-way center-channel speaker. The HiFI-Stereo listing (February 1996, p.118) described the 73C as a reflex-loaded design with two 4¼-inch paper woofers, a 1⅜-inch polypropylene-cone tweeter, and an injection-molded, mica-loaded polypropylene baffle. A user's report in HiFI-Stereo (May 1996, p.58) called it a $249 speaker with two 4-inch mid-woofers and a 1¾-inch cone tweeter. It also described a larger module as essentially this speaker, with bass delivered by a pair of 6-inch drivers.

The two accounts don't agree on driver sizes - 4¼ in vs. 4 in, and 1⅜ in vs. 1¾ in. That's the sort of discrepancy you get between a directory spec and a reviewer's shorthand. What they share is a vented, two-way center speaker with paper-cone woofers, a cone tweeter, and a price around $250. No production years, further specifications, or other period reviews have been traced.

What the record shows:

Two-way center-channel speaker, reflex-loaded
Two 4¼-inch paper woofers and one 1⅜-inch polypropylene-cone tweeter (per the Feb 1996 listing)
Injection-molded, mica-loaded polypropylene baffle
Listed at $249 in the May 1996 user's report