Podium Pro PP102 10-Inch Deluxe Pro Audio DJ PA Karaoke Band Replacement Subwoofer Pair 250 Watts RMS & 500 Watts Max per piece 50 - 5500 Hz Frequency Response - 94 dB - 8 ohm High Temperature 2" Flat Ribbon wire multi layer voice coils - 60 oz. Magnets and Vented Pole Pieces - Die Cast Aluminum Frame Sturdy Polymer treated Paper Cones with Cloth Accordion Edge Surrounds - Progressive Rolled Spiders - Silver Screw Connectors Overall Dimension is 10.25" - Fits Enclosure Hole Size of 9.25" - Mounting Depth is 4.5"