Mackie HR624mk2 Features: 6.7" high-precision, low-distortion LF driver 1" titanium dome ferrofluid-cooled tweeter Optimized waveguide for wide, even tone Twin FR Series amps: 100W LF, 40W HF Cast aluminum Zero Edge baffle minimizes diffraction Internal damping eliminates midrange artifacts Acoustic Space Control, LF roll-off, HF shelf controls Balanced XLR, TRS, and unbalanced RCA inputs OmniMount for easy wall or ceiling placement THX pm3 certified for surround applications