This 15" woofer will continue our Team 1K 1000 Watt RMS Series. The Team 1K series has addressed every single part that can fail under High Temps from extended High Power use and than we over built them. This woofer uses A High Wound (50 mm) 4 layer 3" High Temp Ultra lite weight CCA Voice Coil, Large Double Stacked 25mm Magnet slugs, Dual High Current Flat Woven Tinsel Leads Per Terminal, Bolt Down Spider Pack using Four Black Nomex Spiders, Dual Vented Back Plate to assist in fast High Temp cooling, Dual Stitched surround, we even use an entire bolt down motor assembly system were bolts run through the basket, through the top plate, through the magnet slugs and into the cross drilled back plate so the motor is secure even in extreme conditions were glue can light on fire causing motors to shift. This woofer is truly the real deal and I cant wait until these are in stock. The 12" will be arriving first in April and the 15" should be available in June.