With the assistance of the Hsu Research engineering team, this state-of-the-art, 3-way HT-8W i8" 3-Way Acoustech Series In-Wall Speakers from BIC America were specifically developed to exceed the demands of in-wall speakers. They incorporate pivoting 1 in. titanium tweeters that are center-mounted in their massive magnet 8 in. woofers. Their tweeters offer highs beyond audible range. For assistance in reproducing mids (lost in many other in-wall speakers), the HT-8W also include 2-1/2 in. poly midranges. Self resetting thermal cut-offs protect them from overload. Metal mounting brackets are included for post-construction.