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Model: HDB2-12D2 Sold as: Each
HDB2 Series Subwoofer 12" 2.0" DVC 450/900w D2
The SoundQubed HDB2-12-D2 is a high-performance 12” subwoofer engineered for aggressive bass and reliable output in demanding systems. Built with dual 2-ohm voice coils and rated for 450W RMS / 900W peak power, this sub handles serious power while maintaining control and clarity. Featuring a conical paper cone, PPI dust cap, and foam surround, the HDB2-12-D2 delivers impactful low frequencies with minimal distortion. A black aluminum 2” voice coil on a spider-crossed lead structure enhances durability and thermal management. With an 87.5dB sensitivity and wide 20Hz–250Hz frequency range, it’s the perfect choice for sealed or ported enclosures in competition or daily setups that demand deep, tight bass.
General Specifications
Nominal Diameter: 12" / 304.8mm
Nominal Impedance: 2+2 Ohms
RMS Power Handling: 450W
MAX Power Handling: 900W
Sensitivity (1w/1m): 87.5dB
Frequency Response: 20-250 Hz
Recommended Low-Pass Crossover: 120 Hz
Features
Improved Heat Dissipation
Cone Shape: Conical
Speaker Terminals: Push 8Ga
Motor Specifications
Voice Coil Diameter: 2" / 50.8mm
VC Former Material: Black Aluminum
Winding Material: SV
Cone Material: Paper
Dust Cap Material: PPI
Surround Material: Foam
Leads Connection Type: Spider Crossed
Magnet Material: Ferrite
Magnet Weight: 68 oz
Basket Material: Steel
Basket Color/Finish: Black
Thiele & Small Parameters
Equivalent Volume (Vas): 34.6L / 1.22ft³
Excursion (one way) (Xmax): 7.75mm
Free Air Resonance (Fs): 38 Hz
Mechanical Factor (Qms): 2.963
Electrical Factor (Qes): 0.556
Total Factor (Qts): 0.468
Mechanical Mass (Mms): 176.04g
Mechanical Compliance (Cms): 0.101 mm/N
BL Factor (BL): 17.33
Voice Coil Inductance (Le): 30.7 mH
Cone Area (Sd): 490.87 cm²
DC Resistance (Re): 2 + 2 Ohms
Efficiency Bandwidth Product (EBP): 68.3
Measurements
Overall Diameter: 12.8" / 325mm
Overall Depth: 7" / 178mm
Front Mount Baffle Cutout: 11" / 280mm
Mounting Depth: 6" / 152mm
Motor Diameter: 6.14" / 166mm
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