Power Acoustik MW10WT Marine Grade 10" Subwoofer, White & Titanium Grills 10 600W waterproof subwoofers | Max power 600W | RMS power 300W | frequency response 30-4khz Marine grade waterproof 10 subwoofers | high density ABS construction w/ UV coating | 100% waterproof sealed back speaker frame Stainless Steel Mounting Hardware Included | IMPP Polypropylene Cone & Rubber Surround | White and Titanium Grills Included Quick Disconnect terminals | Meets RoHS and CE Certifications | 4-Ohm system impedance Marine Subwoofer MW-10WT | MAX Power 600w | RMS Power 300w | Frequency Response 30-4kHz | Efficiency (1w/1m dB) 91dB | Overall Size (WxHxL) 10.5 x 10.5 x 6