Podium Pro PP151 15-Inch Pair Subwoofers Pro Audio DJ PA Karaoke Band Replacement 300 Watts RMS & 600 Watts Max per piece 50 - 4500 Hz Frequency Response - 96 dB - 8 ohm High Temperature 2" Parabolic 4-Layer Aluminum Kapton Voice Coils - 55 oz. Magnets and Vented Pole Pieces Sturdy Poly-Infused Paper Cones with Cloth Accordion Edge Surrounds - Progressive Rolled Spiders Overall Dimension is 15.125" - Fits Enclosure Hole Size of 13.875" - Mounting Depth is 5.1875"