Planet Audio BB57 Big Bang 500 Watt (Per Pair), 5 x 7 Inch, Full Range, 4 Way Car Speakers (Sold in Pairs) Impedance: 4 Ohms, Frequency Response: 50 Hz - 20 kHz, Sensitivity: 85 dB Cone: Poly Injection, Voice Coil: 1 Inch Aluminum Surround: Rubber, Basket: Cast Aluminum 2 Tweeters and 1 Mylar Cone Midrange Per Speaker Included: Grills and Magnet Covers Dimensions: Depth 5.5 x Width 8.5 x Height 3, Weight Per Pair: 4 Lbs. 3 Year Platinum Online Dealer Warranty valid only on products Sold / Shipped by Amazon.com. This offer is not valid on purchases made from third party market place sellers