Quantum QP690 Q Series 6-Inch x 9-Inch 180-Watt Coaxial Speaker Xmnavtraffic Tuner Features Dual Xm Tuners For Simultaneous Audio (Xm Radio) An 180W Max 60W Rms Sensitivity: 93 Db @1W/1 M Freq Resp: 28 Khz30 Khz