





Down4Sound SB 10" Subwoofer 500W RMS
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Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
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Subwoofer Wiring Diagram
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Elevate your car audio system with the DOWN4SOUND SB-10 Subwoofer, designed to bring precise, deep bass and exceptional clarity to your setup. With a dual 2-ohm voice coil configuration and 500W RMS power handling, this subwoofer delivers a perfect balance of performance and durability in a compact footprint. Engineered with a highly optimized suspension and robust motor system, the SB-10 D2 provides clean, accurate, and impactful bass for daily use or high-performance builds.
Key Features
- 500W RMS power handling
- Dual 2-ohm voice coil configuration
- 2.5-inch high-temperature voice coil
- 21 mm one-way Xmax
- Highly optimized suspension
- Compact, high-output design
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 μm/N -
Rms
0.740 -
Vas
25.653 L - Sd: 333.654 cm²
-
BL Product
16.190 T·m -
Sensitivity (SPL)
84.1 dB -
Xmax
21 mm -
Displacement
0.09 cu ft
Engineering and Construction
- Optimized suspension for accurate sound reproduction
- Vented motor for improved cooling
- Precision-wound 2.5-inch voice coil
- Durable cone and surround assembly for long-term reliability
- Compact motor structure 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
9.02 in (229 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 lbs
-
Gross Weight
25.2 lb
Why You Should Buy
- Strong 500W RMS performance
- Accurate and controlled bass reproduction
- Dual 2-ohm coils for flexible wiring
- Durable construction for long-term reliability
- Compact size ideal for space-limited installs
Ideal Applications
- Daily-driven systems needing clean, solid low end
- Ported enclosures offering strong output and accuracy
- Small-to-mid-size vehicle installs
- Users seeking dependable performance without sacrificing space
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.


