In addition to crisp, detailed mid and high frequencies, this single in-ceiling speaker kicks out impressive bass due in part to the 8” carbon fiber composite woofer and heavy-duty and efficient magnet structure that focuses energy within the voice coil gap. Other Audiophile features designed into the ACE870 include front-mounted contour switch as well as butyl rubber surround that gives the speaker more excursion capability for deeper bass and wider frequency response. The ACE870 installs easily into ceilings with four easy-to-lock-in dog-eared brackets and includes a cut-out mounting template. Wide Dispersion Wide dispersion DALI speakers ensure a larger sweet spot to enjoy the best sound experience. Especially for in-wall and in-ceiling speakers. Slim Cabinet With a depth of 100-103 mm, our slim-profile DALI PHANTOM speakers fit conveniently into most standard walls. Magnetic Grille DALI PHANTOM S and M series magnetic front grilles have a simple, modern Nordic design that's both non-intrusive and attractive. Traditional Speaker Technologies DALI PHANTOM in-wall speakers feature many of our familiar technologies, including wood fibre cones and soft dome tweeters.