All FX Series Coaxial Speakers are designed with High-Tec Sonic Performance in mind. Solid stamped steel powder coated baskets house High-Energy Y35 magnets to assure sufficient magnet force. Built in 6dB Linkwitz–Riley outboard crossovers connect to Ferro Fluid Cooled 20mm inverted aluminum dome tweeters. All drivers support custom woven fiber glass cones with soft butyl rubber surrounds. Every cone interacts with high quality polyester fiber spiders that are bonded to 1” high temperature 100% pure KSV voice coils to reproduce a sonic balance between inter detail and high-volume output. Manuals & Downloads FX57 Manual FEATURES Heavy Gauge Steel Basket with Thick Powder Coating MASSIVE Punched Logo (FX6 / FX69) Custom Made Massive Logo 2 Way Tweeter Plate Built-in 6dB Linkwitz–Riley Crossover High-Energy Y35 Magnets Custom Designed Pole Piece for Low Distortion and Sound Quality Rugged Construction to Withstand Harsh Mobile Environment Custom Fiber Glass Cone with Butyl Rubber Surround Fully Isolated Tinsel Leads to Eliminate Crosstalk High Quality Cloth Spider with Polyester Fiber 1” High Temperature 100% Pure KSV Voice Coil 20mm Inverted Aluminum Dome Tweeter with Ferro Fluid Cooled V.C. SPECIFICATIONS Speaker Size 5" x 7" Tweeter 20mm Aluminum Dome Ferro Fluid Cone Custom Fiber Glass Sensitivity 91dB Frequency 58-20KHz RMS Power 70 watts Peak Power 280 watts Impedance 4 Ohm Mounting Depth 2.24" Mounting Diameter 4.96" x 7.1" Frame Diameter 5.5" x 8.60"