All models within the Home Theater series feature MTX "high power handling technology". This combination of high order crossovers, large woofer motor assemblies, and high tech PTC tweeter protection make each model perfect for the increased dynamic demands required for digital home theater. Of course only the highest quality components are used in each model. High technology glass fiber woofers with rubber surrounds combined with 30mm bridge mounted soft dome tweeters assure the listener of both deep bass and smooth high frequency response even off axis. The HT625AC features pivoting tweeters and woofers that are mounted at 15 degree angles making them perfect for front or rear mounted home theater applications. When the situation calls for uncompromising sound quality and an In-ceiling mounting application this MTX Home Theater series In-ceiling speakers is the ideal choice for the discriminating listener!