SC-15 is a passive coaxial 15" speaker (LF-Neodymium) and 1,75" driver (1" voice coil) with a two-way passive crossover: the speaker is 400Waes, so we recommend you use a 800 WRMS amplifier. There are two ways to use the speaker thanks to its design: it can be mounted with an Omega Clamp (not included) on a truss using the appropriate U-bracket (not included), or you can also use it as a monitor wedge on the stage floor thanks to the first choice Baltic birch plywood with scratch free, black textured Polyurea finishing. It has 3 speakON connectors, two on one side, one on the other.