*Brushed Stainless Steel Finish Stamped Steel Baskets *Woven Glass Fiber/Spruce Pulp Laminate Cones *Inverted Polypropylene Dust Caps *NBR Rubber Surrounds *Black Progressive Conex Spiders *1" Copper Voice Coil on Aluminum Former with Reinforced Neck Joint *Nickel Plated Binding Posts *Rubber Motor Cover with Logos *Vented Pole Pieces *4 Ohm Impedance *1" Teflon/Silk Dome with Resin Coating Tweeters *Neodymium Tweeters Magnets *Ferrofluid Cooling *Multi-Function Mounting Set *Passive Crossover with 12dB Low-Pass and Presence Switch for Midbass, 18dB *High-Pass with 3-Way Sensitivity Switch for Tweeter, Tweeter Protection Circuit *Grills and Mounting Hardware Included RMS PWR (W) : 125 MAGNET WEIGHT (Oz.) : 13 CROSSOVER FREQUENCIES HIGH-PASS (Hz) : 3.3K LOW-PASS (Hz) : 3K SENSITIVITY : 91dB CROSSOVER SLOPE : 18dB FREQUENCY RESPONSE (Hz) : 50-20K VOICE COIL SIZE (INCHES): 1 WOOFER MOUNTING DEPTH : 2.6"