The TAVOR 8-T high performance powered ceiling tile speaker features a 40 watt built-in class D power amplifier, three inputs, Kevlar(R) woofer, four pivoting titanium tweeters, complete K-overage ESD™ (Equal Sound Dispersion) design for almost 180 degrees of sound dispersion, magnet held grill (with two security screws) for time saving installation and a 2nd level cross-over.