Anyone familiar with these? Late 60's vintage JBL C50 Olympus S7r. 15" woofer with massive 20 lb. magnet; 15" passive radiator; and high frequency horn. Had the woofers rebuilt two years ago
JBL Olympus (anybody have any experience with these?)
JBL C50 OLYMPUS S8R - YouTube
Vintage JBL C50 Olympus Speakers S8R Version Beautiful Condition Photo #1056588 - Canuck Audio Mart