Heavy Duty MDF Construction w/Reinforced Corners 4x10 Super Horn Midrange/Tweeter 1 Titanium Compression Driver Loaded in Horn 10 Subwoofer 1.5 Kapton VC Woofer Magnet Weight:50 oz Compression Tweeter Magnet Weight: 20 oz Ported Enclosure for Added Bass Response Heavy Duty Handles for Easy Portability Dual Speakon Dual 1/4 Jacks Binding Post Terminals Built In Crossover Network 4KHz Power Handling: 250 Watts RMS/500 Watts Peak Frequency Response: 40-20K HZ Sensitivity (1w/1m): 97 dB Impedance: 8 Ohms 35mm Speaker Stand Mount Dimensions: 15.25W x 20H x 12.75D