SoundQubed HDB2-12D4 12" D4 HDB2 Series Sub, 2.0" DVC, 450w/900w

Model: HDB2-12D4   Sold as: Each

SoundQubed HDB2 Series Subwoofer 12 Inch 2.0" DVC 450/900 D4

The SoundQubed HDB2-12-D4 is a rugged 12” subwoofer crafted for deep, dynamic bass with precision and power. With dual 4-ohm voice coils and a 450w RMS / 900w peak rating, this subwoofer is built for strong performance and system flexibility. Its conical paper cone, PPI dust cap, and foam surround deliver tight, musical low-end, while the black aluminum 2” voice coil and spider-crossed leads ensure durability under heavy use. With an 87.5dB sensitivity and 20Hz–250Hz frequency range, the HDB2-12-D4 is ideal for ported or sealed enclosures in custom or competition-level setups where tight bass and consistent output are key.

General Specifications
Nominal Diameter: 12" / 304.8mm
Nominal Impedance: 4+4 Ohms
RMS Power Handling: 450W
MAX Power Handling: 900W
Sensitivity (1w/1m): 87.5dB
Frequency Response: 20-250 KHz
Recommended Low-Pass Crossover: 120 Hz
Features
Improved Heat Dissipation
Cone Shape: Conical
Speaker Terminals: Push 8Ga
Thiele & Small Parameters
Equivalent Volume (Vas): 23.4L / 0.82ft³
Excursion (one way) (Xmax): 7.75mm
Free Air Resonance (Fs): 38 Hz
Mechanical Factor (Qms): 6.305
Electrical Factor (Qes): 0.748
Total Factor (Qts): 0.69
Mechanical Mass (Mms): 189.648g
Mechanical Compliance (Cms): 0.069 mm/N
BL Factor (BL): 21.65
Voice Coil Inductance (Le): 32.18 mH
Cone Area (Sd): 490.87 Cm²
DC Resistance (Re): 3.2 + 3.2 ohms
Efficiency Bandwidth Product (EBP): 50.8
Measurements
Overall Diameter: 12.8" / 325mm
Overall Depth: 7" / 178mm
Front Mount Baffle Cutout: 11" / 280mm
Mounting Depth: 6" / 152mm
Motor Diameter: 6.14" / 156mm