DD Audio 18" USA Built Dual 2-Ohm 4 Voice Coil 3200-Watt RMS Subwoofer 9918C

• High Power Handling: 3200W RMS and 9600W peak for competition-level bass performance.
• Dual 2-Ohm Configuration: Offers versatility for powerful amplifier setups.
• Innovative Cooling Technology: Aluminum Dual Stage Heatsink and Free Flow Cooling ensure optimal heat management.
• Precision Design: Handcrafted non-pressed carbon fiber-loaded pulp cone for durability and superior sound clarity.
• Extended Excursion: 2nd Gen V-ROM surround for maximum cone movement and deep bass.
• Made in the USA: Engineered with premium materials for the highest sound quality and longevity.

DD Audio 18" USA Built Dual 2-Ohm 4†Voice Coil 3200-Watt RMS Subwoofer 9918C

This Listing Includes

• (1) DD Audio 18" 1-Ohm, 3200 RMS/9600 Peak USA Built Subwoofer

The DD Audio 9900C Series 18-inch subwoofer offers extraordinary bass performance with 3200W RMS power handling and an impressive 9600W peak power rating. Designed with competition in mind, this subwoofer features DD Audio's largest ferrite motor and innovative engineering. With its Dual 2-ohm configuration, it allows for flexible amplifier setups and delivers efficient, powerful bass. Incorporating features such as an aluminum Dual Stage Motor Heatsink, the 2nd Generation V-ROM surround, and USA-made Iron Cloth Spider System, the 9900C is engineered to maximize excursion and efficiency. It also boasts a supercharged motor that generates nearly 9000 gauss for precise coil control, while its high-temp voice coil ensures durability during intense use. Perfect for large ported enclosures, the 9900C is built for unrivaled bass impact.

Features

• NEW Aluminum 2 Stage Motor Heatsink


• 260mm Magnet Diameter


• Multi-Vent Free Flow Cooling Motor


• Shorting Ring Motor


• 4.3†High-Temp Voice Coil


• Excursion Optimized ESP Frame


• V-ROM Vario-Density Surround


• Non-Pressed Composite Reinforced Pulp Cone


• 11†Dual/Triple Layer Iron Cloth Spider


• Laminated Tinsel Leads


• Hand Laid Composite Dust Cap


• Embossed DDesign Magnet Boot


• Made In USA

Specifications

• Speaker Size: 18 inches


• Watts RMS: 3200


• Watts Peak: 9600


• Impedance: Dual 2-ohm


• Voice Coil Diameter (VCD): 4 inches


• Piston Diameter: 15.5 inches


• Resonant Frequency (Fs): 26.24 Hz


• Qms: 2.265


• Qes: 0.5167


• Qts: 0.4705


• Vas: 161.9 liters


• Xmech (Max Excursion): 60 mm


• Xmax (Linear Excursion): 22 mm


• Frame Outer Diameter (OD): 18.25 inches


• Frame OD with Gasket: 18.5 inches


• Mounting Diameter: 16.75 inches


• Mounting Depth: 11.875 inches


• Motor Diameter: 10.3125 inches


• Motor Depth: 4.5625 inches


• Woofer Displacement: 0.46 cu. ft.


• Recommended Ported Enclosure: 5.0–6.0 cu. ft.


• Shipping Weight: 89 lbs