JBL STX 828S Dual 18? Bass Reflex Subwoofer

Dual 18" Bass Reflex Subwoofer
A dual 18" high power subwoofer system in a front-loaded, vented enclosure designed for maximum low-frequency performance. The STX828 has an optional wheel kit. Two drivers give 2,000 watts of continuous pink noise power handling, 4kW program and 8 kW peak.
• Dual 18 in. Super Vented Gap™ woofers for extended low frequency output.
• Dual 18 in. Super Vented Gap™ woofers for extended low frequency output.
• Rugged DuraFlex™ coated enclosures sized to be truck pack friendly.
• 14-Gauge steel grille lined with acoustically transparent cloth.