One 12 " Woofer with Single 4 ohm  Voice Coil. Refer to the user manual below for troubleshooting instructions</br>1400 Watts MAX 700 Watts RMS Power Handling</br>87dB Sensitivity?? 27 Hz Resonant Frequency</br>Custom Tooled High Efficiency Injection Custom Tooled PP Cone  and Rubber Surround</br>Works in 1 CuFt Sealed or 2 CuFt Ported enclosure. 3 Year Platinum Dealer Warranty</br>12-inch subwoofer with 1400 watts maximum power handling</br>4-Ohm impedance</br>Custom-tooled?? high-efficiency injection cone</br>Frequency Response: 25Hz - 3kHz</br>Mounting Depth: 4-3/4 Inches</br></br>Product Description</br></br>CHAOS EXXTREME 12"Subwoofer?? Custom Tooled High Efficiency Cone?? 4-Ohm?? 1400W</br></br>Amazon.com</br></br>One look and you'll know why they're called Chaos Exxtreme?? but form follows function--these subs are ready to deliver some serious low-end without too much damage to your wallet. The CX122 is a 12-inch sub packing 1400 Watts of maximum power.</p>  <p><b>CX122 Specifications</b><br> <ul>   <li>Power Handling?? Peak: 1400 Watts   <li>Power Handling?? RMS: 700 Watts   <li>Cone Material: Custom-Tooled?? High-Efficiency Injection Cone   <li>Voice Coil: Single    <li>Efficiency (1 Watt/1 Meter): 94dB   <li>Frequency Response: 25Hz - 3kHz   <li>Impedance: 4 Ohms   <li>Mounting Depth: 4-3/4 Inches </ul>  <p><b>What's in the Box</b><br> Boss CX122D 12"fer 4-Ohm Voice Coils</br>114?? 1990