Description
- Impressive Power Handling: 3200W RMS, 9600W peak for extreme bass output and efficiency.
- Dual 1-Ohm Configuration: Ideal for flexible amplifier matching and optimal performance.
- Innovative Cooling: Aluminum 2-stage motor heatsink and multi-vent Free Flow Cooling system for heat dissipation.
- Precision Excursion: 2nd Generation V-ROM and EROM surrounds for extended cone travel and minimal distortion.
- Durability and Control: 4.3-inch high-temp voice coil with a supercharged 9900 motor for tight, controlled bass.
- Enhanced Cone Area: Composite cone with 2nd generation EROM high-roll surround for more efficient air movement.
- Handcrafted in the USA: Made with premium materials for exceptional sound quality and durability.
DD Audio 21″ USA Built Dual 1-Ohm 4 Voice Coil 3200-Watt RMS Subwoofer 9921C
This Listing Includes:
- (1) DD Audio 21″ 1-Ohm, 3200 RMS/9600 Peak USA Built Subwoofer
The DD Audio 9900C Series 21-inch subwoofer is a powerhouse designed for those who demand deep, thunderous bass with unmatched efficiency. With an RMS rating of 3200W and a peak power handling of 9600W, this subwoofer is engineered to deliver the ultimate performance. The 9900Cs large ferrite motor series is built to provide exceptional sound clarity and power, even with intense power bursts over 12,000W. Utilizing cutting-edge technologies like the aluminum Dual Stage rear-mounted heatsink, USA-made Iron Cloth Spider System, and 2nd generation V-ROM surround, the 9900C ensures high efficiency, durability, and superior sound. The 9921 model expands on these features with a composite cone and 2nd generation EROM surround, offering up to 30% more cone area than typical 18 subwoofers. The result is more efficient air movement with less coil travel, providing an unbeatable audio experience. Perfect for high-output ported enclosures, this subwoofer is made to move air and produce the deepest bass with precision.
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: 21 inches
- Watts RMS: 3200
- Watts Peak: 9600
- Impedance: Dual 1-ohm
- Voice Coil Diameter (VCD): 4 inches
- Piston Diameter: 18.25 inches
- Resonant Frequency (Fs): 26.24 Hz
- Qms: 5.265
- Qes: 0.517
- Qts: 0.471
- Vas: 161.9 liters
- Xmech (Max Excursion): 92 mm
- Xmax (Linear Excursion): 22 mm
- Frame Outer Diameter (OD): 21.3125 inches
- Frame OD with Gasket: 21.3125 inches
- Mounting Diameter: 19.25 inches
- Mounting Depth: 11.3125 inches
- Motor Diameter: 10.3125 inches
- Motor Depth: 4.5625 inches
- Woofer Displacement: 0.55 cu. ft.
- Recommended Ported Enclosure: 6.08.0 cu. ft.
- Shipping Weight: 92 lbs
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