4" 2 Way Coax - Integral Grill Speaker Part Number: MA-4054 MA-4054 is a 4" cone size two-way coaxial speaker. This speaker featured a rugged waterproof design, teflon-coated wires, plastic grills, polypropylene cones, mylar tweeters and plastic frames, to provide years of trouble-free service. Ultra-low magnetic field speakers eliminates the problem of speakers magnets affecting navigation equipment such as compasses and autopilots. Peak power handling capability 80W/pair Features Ultra-low magnetic field speaker Ideal replacement speakers for boaters who want to upgrade to waterproof speakers without changing the cutout size Integral grills allow for simple, one-piece installation Stainless steel mounting harware included Available in Black and White color speaker Specifications Frequency response: 65Hz to 20KHZ (2 way) SPL: 87dB Type: 2-way Coaxial Cone Size: 4" (102mm) Speaker Impedance: 4 ohms Peak Power: 80 watts per pair Continuous Power: 40 watts RMS/pair Weight: 1.2 lbs per unit weight Outside Diameter: 5-¼" (132mm) Cutout Diameter: 4-1⁄16" (102mm) Mounting Depth: 2-⅛" (54mm)