(4) MB QUART FKB146 4x6" 360 Watt Car Audio Coaxial Speakers

Features: Pair MB Quart FKB146 4x6" 180 Watt Coaxial Car Speakers. RMS Power Handling: 45 Watts (Per Speaker) / 90 Watts (Per Pair). Peak Power Handling: 90 Watts (Per Speaker) / 180 Watts (Per Pair). Speaker Impedance: 4 Ohms. Frequency Response: 55 Hz - 20 kHz. Sensitivity: 88 dB. Crossover Point: 6 kHz. Crossover Slope: 12 dB. Tweeter Dome Material: Aluminum dome tweeters deliver great sound with increased reliability Speaker Surround: Butyl rubber surrounds provide durability and deeper mid-bass impact. Voice Coil: Pure Copper voice coil creates a strong magnetic field with a very thin extrusion. Voice Coil Former: Kapton voice coil former is lightweight and efficiently dissipates heat. Spider: Natural fiber allows flexibility while the infused epoxy gives strength during the manufacturing process. Cone Material: Lightweight thermal-formed polypropylene cones enable faster midrange response Surround/Cone Coupling: The cone/surround connection utilizes a high temp adhesive which assure the cone and surround do not separate in high power uses or extremes of weather. Gasket: A textured ABS gasket assures a rigid linear seal to the mounting surface. Tinsel Leads: Highly conductive while remaining flexible during high power applications. Cooling System: Over-coil cooling system allows air exchange over the voice coil through the spider Internal Crossover: 6 dB internal crossover integrated into the design to assure smooth midrange to tweeter frequency transitions. Frame: Heavy gauge progressive-die stamped steel frames for ultimate rigidity. Motor: Ferrite magnet motor creates a strong magnetic field while remaining small enough to fit nearly every application. Connectors: Use spade connectors or solder direct for the best connection Tweeters: 1 inch tweeters produce clear highs while handling plenty of power without sound harsh. Mounting Diameter/Cut Out: 5.5" x 3.46" inches. Outside Diameter: 5.94" x 3.84" inches. Mounting Depth/Chassis Depth: 3.0" inches