SoundQubed HDB2-10D4 10" HDB2 Series Sub, D4, 400w/800w

Model: HDB2-10D4   Sold as: Each

SoundQubed 10" HDB2 Series Sub, D4, 400w/800w

The SoundQubed HDB2-10-D4 is a competition-grade 10” subwoofer built for serious bass enthusiasts who demand powerful, controlled low-frequency performance. With dual 4-ohm voice coils and 400W RMS / 800W peak power handling, this sub delivers deep, accurate bass with enhanced heat dissipation for long-lasting performance. Featuring a conical paper cone, PPI dust cap, and foam surround housed in a steel black basket, it’s built for strength and precision. The 2” black aluminum voice coil and 87dB sensitivity allow for efficient output in both sealed and ported enclosures. Ideal for custom installs and SPL builds where punch, durability, and depth are non-negotiable.

General Specifications
Nominal Diameter: 10" / 254mm
Nominal Impedance: 4+4 Ohms
RMS Power Handling: 400W
MAX Power Handling: 800W
Sensitivity (1w/1m): 87dB
Frequency Response: 25-300 KHz
Recommended Low-Pass Crossover: 120 Hz
Features
Improved Heat Dissipation
Cone Shape: Conical
Speaker Terminals: Push 8Ga
Thiele & Small Parameters
Equivalent Volume (Vas): 10.6L / 0.37ft³
Excursion (one way) (Xmax): 7.75mm
Free Air Resonance (Fs): 42 Hz
Mechanical Factor (Qms): 5.191
Electrical Factor (Qes): 0.616
Total Factor (Qts): 0.551
Mechanical Mass (Mms): 123.04g
Mechanical Compliance (Cms): 0.069mm/N
BL Factor (BL): 10.905
Voice Coil Inductance (Le): 8.22 mH
Cone Area (Sd): 330.06 Cm²
DC Resistance (Re): 3.2 + 3.2 ohms
Efficiency Bandwidth Product (EBP): 68.1
Measurements
Overall Diameter: 10.6" / 270mm
Overall Depth: 6.4" / 162.4mm
Front Mount Baffle Cutout: 9.2" / 234mm
Mounting Depth: 5.4" / 137mm
Motor Diameter: 6.14" / 156mm