Dimensions: 6.6 x 6.6 x 2.4 inches Impedance: 4 ohms Mounting Depth: 2.13 inches, Mounting Hole: 5.5 inches Item Weight: 2.5 Lbs. (pair) Frequency Response: 100 Hz to 15 kHz Sensitivity: 90 dB @ 1 watt/1 meter Poly Injection Cone, Rubber Surround, Stamped Basket, 1 Inch Voice Coil 0.50 inch Piezo Tweeter, 1 inch Polyimide Dome Midrange BOSS Audio Systems 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