DD Audio 9918B 18" 10000W VCS Subwoofer

Features:

• EROM
• Non-Pressed Paper Cones
• SFB
• DD Spiders
• Laminated Spiders
• Laminated Leads
• High-Temp Aluminum Former Voice Coils
• Aluminum Shorting Ring
• Free Flow
• Back Plate Coil Gap Venting
• DD Cast Baskets
• Direct Connect

Specifications:

• Driver Size: 18"
• Watts RMS: 1500 – 2500
• Peak Power: 10000
• VCD: 4
• Impedance: D1 / D2
• Piston Dia: in 15 1/2
• Fs: Hz 36.09
• Qms: 6.190
• Qes: 0.530
• Qts: 0.490
• Vas liters: 85.148
• dBSPL: 89.02
• Xmech: mm 100
• Xmax: mm 22
• Frame OD: in 18 1/4
• Frame OD w/Gasket: in 18 7/16
• Mounting Diameter: in 16 5/8 
• Mounting Depth: in 10 5/8
• Motor Diameter: in 10 5/16
• Motor Depth: in 4 9/16
• Woofer Displacement: cu ft 0.45
• Sealed Enclosure: cu ft N/a
• Ported Enclosure: cu ft 5.0 - 6.0
• Shipping Weight: lbs 86