Amazon.com One look and you'll know why they're called Chaos Exxtreme, but form follows function--the red metallic poly injection cone delivers clear sound while the rubber surround provides smooth response and durability. The CH4630 is a 4 x 6-inch, three-way speaker with 250 Watts maximum power handling. CH4630 Specifications Power Handling, Peak: 250 Watts Impedance: 4 Ohm Frequency Response: 100Hz - 18kHz SPL (1 Watt/1 Meter): 90dB Cone Material: Poly Injection Voice Coil: 1-inch Aluminum Tweeters: 1/2-Inch Piezo, 1-Inch Polyimide Dome Mounting Depth: 1-3/4 Inches What's in the Box Boss CH4630 4 x 6-inch 3-Way Speaker Product Description Just one look and you’ll know why they’re called CHAOS EXXTREME. The red metallic poly injection cone delivers clear sound while the rubber surround provides smooth response and durability. Dimensions: 5.1 x 5.1 x 2.1 inches, Impedance: 4 ohms Mounting Depth: 1.7 inches, Mounting Hole: 3.8 inches, Item Weight: 1.7 Lbs. (pair) Frequency Response: 100 Hz to 18 KHz, Sensitivity: 90 dB @ 1 watt/1 meter Poly Injection Cone, Rubber Surround, Stamped Basket, 1 Inch Voice Coil, 1 inch Polyimide Tweeter 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