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
1973 OLYMPUS-SOVEREIGN
JBL C50 Olympus S8R Vintage Speakers with 375 Driver One of The Most Desirable | eBay | Vintage speakers, Speakers for sale, Vintage