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 Audifonos JBL C50 HI | Falabella.com
JBL C50 S7 Olympus Speakers (Pair) Circa 1962 | Reverb