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
Pair of JBL N-7000 Crossovers used in Paragon, Metregon, SR8 Olympus & Sovereign | eBay