10" Panel Mount Subwoofer with AmplifierThe MS250 is a powered 10" round waterproof flush-mount subwoofer designed to complement your marine audio system by providing heavy-duty response with up to 150 watts RMS. Easy to install, the amplifier may be conveniently mounted remotely or directly onto the back of the speaker. Since it has its own amp, it won't drain power from the primary system. (For subwoofer without amplifier, order MS-150).Features:Corrosion proof design and construction for marine useInternal crossover and equalization matched to the speakerInternal distortion limiting circuitWill accept line or speaker level inputGain level control to match output to main systemSpecifications:Power Handling: 2 x 50 Watts RMS (Dual Voice Coils) 2 x 100 Watts MaxFrequency Response: 30Hz to 200Hz ( Amp Crossover)Operating Voltage (Amp): 13.8VDC (12V Nominal)Current Draw (Amp): 7 Amp MaxOverall Diameter: 12-11/16" (321mm)Cutout: 9-1/16" (230mm)Frequency Response: 40Hz to 400Hz