DOWN4SOUND | SB 10″ SUBWOOFER| 500W RMS | D4

Upgrade your car audio experience with the DOWN4SOUND SB-10 Subwoofer, built to deliver precise, deep bass and exceptional clarity. Featuring a dual 4-ohm voice coil configuration and 500W RMS power handling, this subwoofer offers a perfect balance of compact design, durability, and high-performance audio. Engineered with a highly optimized suspension system and robust motor assembly, the SB-10 D4 is ideal for versatile installations and daily high-output use.

Key Features

500W RMS power handling
Dual 4-ohm voice coil configuration
2.5-inch high-temperature voice coil
21 mm one-way Xmax
Highly optimized suspension
Compact design suitable for versatile installs

Technical Specifications (T/S Parameters)

Revc (DC Resistance): 4.030 ohm
Resonance Frequency (Fs): 37.717 Hz
Qms: 3.510
Qes: 0.486
Qts: 0.427
Mms (Moving Mass): 158.478 g
Cms (Compliance): 158.882 m/N
Rms: 0.740
Vas: 25.653 L
Sd: 333.654 cm
BL Product: 16.190 Tm
Sensitivity (SPL): 84.1 dB
Xmax: 21 mm
Displacement: 0.09 cu ft

Engineering and Construction

Optimized suspension for accurate bass reproduction
Vented motor system for improved cooling
Precision-wound 2.5-inch voice coil
Durable cone and surround assembly
Compact motor design optimized for output and control

Recommended Enclosures

Ported: 1.0 cu ft (net)
Port Area: 15 sq in
Tuning: 35 Hz
Sealed: Not recommended

Physical Dimensions

Cutout Diameter: 9.06 in (230 mm)
Outside Diameter: 10.28 in (261 mm)
Mounting Depth: 6.46 in (164 mm)
Motor Height: 3.54 in (90 mm)
Net Weight: 21.9 lb
Gross Weight: 25.2 lb

Why You Should Buy

Powerful performance in a compact design
Dual 4-ohm coils enable flexible wiring options
Built for durability and long-term use
Optimized suspension delivers clean, precise low-frequency output

Ideal Applications

Ported enclosures for strong, accurate bass output
Tight installs needing high-performance low-frequency response
Daily-driven systems seeking clean, controlled bass
Builds requiring flexible wiring and reliable performance