Elac WS 1665 On Wall SpeakerExpansive sound. Delivering a truly astonishing performance, the WS 1665 is essentially a 2 way, bass reflex floorstanding speaker designed for the wall, and provides an audiophile solution without the usual positioning problems. Equipped with two woofers and the acclaimed JET 5 tweeter, this is the loudspeaker of choice for large listening rooms or if higher playback levels are required. Offering a very similar sound to the WS 1645, but with even