Stamped Steel Frame</br>Carbon treated cone</br>Rubber surround</br>Diameter: 6X9" (150X230 mm)</br>Sensitivity: 90.1 dB; Power Handling: 100 Watt RMS (100Hz high pass); Frequency Response: 45 ~ 4000 Hz; Nominal Impedance: 4 Ohms</br></br>Product Description</br></br>The CL-69SUB sub is smooth with a fast deep clean sound into the lowest bass frequencies.  Power Handling: 100 Watt RMS/200 Watt Music. (100Hz high pass)  Frequency Response: 45 ~ 4000 Hz  Nominal Impedance: 4 Ohms  Voice Coil Diameter:1.5" (45mm)  6.625"X 9.25" Ellipse  (168.3mm X 235mm) Ellipse  (Exclusive of mounting tabs)  6" X 8.625" Ellipse (152.4mm X 219mm) Ellipse  Free Air use only. Mount in rear deck, large door or panel.</br><br/>http://www.amazon.com/gp/product/B00481W5KA