Dimensions: 6.5 x 9.25 x 3.5 inches Impedance: 4 ohms Mounting Depth: 3.07 inches, Mounting Hole: 8.74 inches Item Weight: 5.1 Lbs. (pair) Frequency Response: 50 Hz to 20 KHz Sensitivity: 87 dB @ 1 watt/1 meter Black Poly Injection Cone, Rubber Surround, Stamped Basket 1 Inch Voice Coil, 1 & 2 inch Mylar Cone Tweeter Planet Audio provides a powerful 3-year platinum online dealer warranty so long as the purchase is made through Amazon.com. We strongly encourage professional installation of this product to ensure proper and safe functionality