Kicker 45KMF122 - 12" 2Ω Freeair Marine Subwoofer The KICKER® KMF 12-inch Marine Subwoofer makes serious bass without a dedicated enclosure! Made to take the power and the weather, this sub is custom made to bring the bass on your boat. Packed with features and made for marine, KICKER gives you the deep, loud bass your boat needs with the KMF series of subs. Features Two-Ohm Voice Coil Injection-Molded Polypropylene Cone Co-molded Santoprene® Surround UniPlate™ Back Plate And Pole Piece Thick Tinsel Leads Large Ceramic Magnet Polymer Basket Resists Corrosion Protective Terminal Cap Stainless Mounting Hardware Included Meets or Exceeds ASTM Standards for UV and Salt/Fog Exposure(ASTM B117 200 hr. Salt Fog Test) (ASTM G154 400 hr. Accelerated UV Test) Want setup help? Go to KICKERU for a free woofer and amplifier configuration app!*The KMF 12-inch Subwoofer works best with 175 watts of recommended power. See below for more details. Specifications Woofer(in,mm) 12, 30 Impedance (OHMS) 2 SVC Peak Power (watts, per ANSI/CTA-2031-A) 350 Recommended Amplifier Power (watts RMS) 175 Sealed Enclosure Volume Min-Max(ft³, L) N/A Vented Enclosure Volume Min-Max(ft³, L) N/A Frequency Response(Hz) 30-500 Mounting Depth(in, cm) 5.5, 13.9 Hole Diameter(in, cm) 11, 27.9 Outer Diameter(in, cm) 13, 32.95 What's in the Box: 1 - 12" Woofer1 - Back gasket8 - Mounting screws8 - Mounting screw clips1 - Manual *Assumes typical music program with minimal amplifier clipping; varies with enclosure size. See your KICKER dealer for details. **Port Volume Excluded. Due to continual developement, product, and specifications are subject to change without notice. Stillwater Designs and it's agents are not responsible for typographical errors.