Elan E71W 7" In-Wall Speaker, Pivoting Tweeter (Pair) Elan Elios, E-71w in-wall speaker. For rooms where the finest sound is still a prerequisite, but the listening area is more fluid (i.e. the kitchen or rec room), these three Elios in-ceiling models feature a stationary woofer baffle and a pivoting 1" tweeter that allow high-frequencies to be directed into the listening area. For applications where only in-wall speakers will do, Elios has two high-performance models with 7-inch woofers and pivoting 1-inch tweeters that deliver full, rich, accurate sound to even the largest of rooms.