Subcompact Box SpeakersPart Number: MA-840W These subcompact box speakers are designed to fit in difficult locations and still offer high quality music sound. The ultra-low magnetic field design lets you mount them anywhere without adversely affecting navigation equipment such as compasses and autopilots. Polypropylene cones, stainless steel grills and brackets, and heavy-duty ABS enclosures make them corrosion-proof and waterproof. Dual cone design with 3" main cone size.FeaturesIdeal for locations where other speakers won't fitOnly 4" x 4"Ultra-low magnetic field speakerStainless steel grill and bracketAvailable in black and whiteSpecificationsFrequency Response: 70Hz to 14KHz (Single cone)Peak Power: 80W per pairContinuous Power: 40W RMS/pairImpedance: 4 ohmsOverall Dimensions: 4-3/16" x 4-1/16" x 4-1/2" (106mm x 102mm x114mm)Cone Size: 3-1/2" (89mm)