FS] - 1973 Kef Concerto/KefKit 3's recapped crossovers | pink fish media
KEF Concerto improved DN12 crossover with full aB circuit | diyAudio
KEF CONCERTO SP1004 | Classic Hi-Fi
Sold at Auction: Pair of vintage classic Kef Concerto speakers and stands, model SP 1004. Made in the UK, circa 1970s. Dimensions not including stands 71.5 cm high, 43.5 cm wide, 29.5 cm deep.