Peak Power Handling(Watts) 350 Continuous Power Handling(Watts RMS) 175 Frequency Response(Hz) 30-500 Kicker 45KMF104 10 Inch LED Marine Subwoofer in Charcoal 4 Ohm each (FreeAir)-Bundle Includes:Kicker KMF10 10-inch (25cm) Weather-Proof Subwoofer for Freeair Applications, 4-Ohm, and Kicker KMG10 10-Inch (25cm) Grille for KM10 and KMF10 Subwoofer, LED, Charcoal KICKER KMF 10-inch Marine Subwoofer Specifications Woofer(in,mm) 10, 25 Impedance (OHMS) 4 SVC Peak Power Handling(Watts) 350 Continuous Power Handling(Watts RMS) 175 Sealed Enclosure Volume Min-Max(ft³, L) 1-2.4, 28.3-68 Vented Enclosure Volume Min-Max(ft³, L) 1.25-1.75, 35.4-49.6 Frequency Response(Hz) 30-500 Mounting Depth(in, cm) 5, 12.7 Hole Diameter(in, cm) 9-3/16, 23.2 Outer Diameter(in, cm) 10-11/16, 27.1 Kicker KMG10 10-Inch (30cm) Grille for KM10 and KMF10 Subwoofer, LED, Charcoal 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.