Product Code: EF-100 Price: Check Latest CDT Audio CL-EF-100   10"  4 ohm  250w RMS Subwoofer   Factory Authorized Web Sales   All CDT Products include FULL FACTORY Warranty   CDT Audio CL-EF-100   10"  4 ohm  250w RMS Subwoofer Classic Series Retail Price: $149.99 Classic Series 10" Cast Alloy Audiophile Subwoofers (Sold as Single Subwoofer) CDT Audio Model:  CL-EF100  Mounting Depth: 4 3/4" Mounting Cutout diameter: 9 1/4" EF Series 10" Subwoofer Powerhandling: 250watt RMS/500watt Peak     CDT EF Series Subwoofers: Understanding how the basic design differences influence the CDT Versabox subwoofers and how they compare with ordinary subwoofers will enable you and your installer to design a sound system both advancing your listening preferences and exceeding your listening expectations.? The EF-Versabox subwoofers are designed for both audiophile & SPL user. The subwoofers are designed for the smooth jazz listeners who sometimes like to turn the volume up on some heavy rock and metal but still with a feel of smooth tight fast bass response. These engineering masterpieces simultaneously deal with the need to move large amounts of air necessary to overcome the 70+ db. of bass masking road noise in the moving automotive interior, while accurately responding to the delicate changes in the harmonic structure of the music. Model:CL-EF100 12” cast sound quality Subwoofer, designed for extreme small enclosures Power handling 250 watt RMS / Max 500 watt DOWNLOAD SPECS PDF-Here     Sensitivity: 87.1 dB Frequency Response: 10-400Hz Nominal Impedance: 4 Ohms Voice Coil Diameter: 1.97" Magnet Weight: 50 Oz. stacked   Sealed Enclosure Recommended: 0.4 - 1.0 Cu Ft