Cl69CF - CDT Audio 6x9" 200 Watts Mid-Subwoofer with Carbon Fiber Cone Power Handling: 100Watt RMS/200Watt Music. (100Hz high pass) Frequency Response: 45 ~ 4000 Hz Nominal Impedance: 4 Ohms Voice Coil Diameter:1.5" (45mm) CL-69 the perfect subwoofer