Soundtube RS600i-BK - Two-Way 6.5-Inch Hanging Loudspeaker (Black)The RS600i is a 6. 5l0 2 way speaker with an open ceiling enclosure design that delivers effective low end response (45 Hz) and optimal off axis performance (up to 10 kHz, EASE documented). SoundTubes proprietary BroadBeam waveguide tweeter system delivers consistent high performance audio across the operating bandwidth. The RS600i speaker design incorporates a low profile grille, proprietary M6 motorboard, driver protection circuitry and a 6 position