The Omni360™ RS/CM50 and RS/CM8SB subwoofers use SoundTube's Zero Reflection™ enclosure technology to eliminate standing wave distortion and boxy colorations. The two-way satellite RS50 (open ceiling) and CM50 (drop ceiling) speakers were designed for smaller venues as stand-alone speakers. (800-647-8823; fax: 435-647-9666; e-mail: sales@soundtube.com; Internet: www.soundtube.com)