The KSI 12-1C ceiling mount subwoofer is the ideal choice for extended low frequency reproduction when mounting in a 2x2 grid is specified. As with all KSI ceiling mount loudspeakers, the 12-1C offers exceptional performance for the assigned task. Users will be impressed with the solid bass response and pleasing architectural appearance. The KSI 12-1C features our high power 1258-8 12" cast frame transducer. We designed this driver to produce very smooth extended low frequency reproduction in a small enclosure as dictated by a 2x2 grid mount. A high compliance motor assembly and powerful magnet structure makes the 12-1C highly efficient at converting electrical energy to acoustical energy. To further enhance the bass response, our engineers configured a highly braced, stiff and lightweight enclosure to fully realize the potential of our 1258-8 transducer.