SUNDOWN AUDIO Nightshade v.4 18" (2500-watts)-DVC-2OHM

SUB DEPTH 15 1/4" SUB MOTOR WIDTH 6 1/2" It has some great new features to increase power handling and to keep heat away from the Neo magnets: ** Side-Vented Motor (more efficient than gap venting)** Newly Tooled Cast Aluminum Venting Ring (transfers heat from the motor into the basket)** Aluminum "top-plate" to transfer heat into the vent ring more effectively** Additional aluminum heat-sink below the Neo Magnets (this is internal and cannot be seen from the outside)** Solid pole-piece for high velocity air movement across the coil former Features & Highlights: 3000-watts RMS80mm long 3" Diameter Flat Wound USA Made Voice Coil Standard** Optional 8-layer for SPL applications (These are ~70mm long)23% More Motor Force than NS v.3 with stock coilLower inductance than NS v.3Only ~50 pounds