Proficient Audio Systems C660 6.5-Inch Graphite LCR Angled Ceiling Speaker (Discontinued by Manufacturer) 125W 6.5-Inch Graphite Woofer and 1-Inch Tweeter Bridge Fixed At A 15 Angle Pivoting Aluminum Dome Tweeter Imp: 8 Ohm Freq Resp: 36 Hz22 Khz