If you want a loudspeaker that's AMERICAN MADE and up to the job of complementing the components in your original Cerwin Vega boxes, this is it! Extreme duty, unlimited class loudspeaker for replacing missing woofers in vintage Cerwin Vega cabinets AT-15, D-9 or any cabinet where foam edge woofers were used. 750W/rms, 1,500W/program or 3,000W/peak. Use with any amplifier with up to 1,500 watts RMS per channel. ! This loudspeaker is best applied in a system that is at least 3-way. Crossover frequency should be 500hz or lower. HUGE 4 inch, 4 layer voice coil makes for deep bass output for subwoofer uses. Larger magnet assembly with a full 1 inch thick magnetic plate protects against damage due to sonic accidents or it quite simply allows the listener the ability to "crank it up" without worrying about any such excursion damage. The frame may look a little different from the picture, but, the front is identical and the huge magnet is exactly the same! Sound character; deep bass style. 100% USA made, just like old school. FREE SHIPPING IS FOR CONTINENTAL US ADDRESSES ONLY! All others, including Alaska, Hawaii and other US territories are actual cost. Please contact us for a shipping estimate before you order! Thank you for looking! Peace!