Features:
High excursion foam surround
True Carbon fiber dust cap
Custom Die cast Aluminum Basket
Triple Layer Progressive dampeners
Large Gauge push speaker terminals
3-inch-high temperature 4-layer voice coil
Custom Rubber protective magnet band
Triple stacked Y35 ferrite oxide magne t

Specs:
Structure: 18" (45.72cm) Woofer
Dynamic Power Handling: 8000 Watts
Nominal Power Handling: 4000 Watts
Impedance: Dual 1 Ohm Voice Coil