Best 8-Inch Car Subwoofers (2026)
An 8-inch sub gives tight, fast bass in a small box, for spaces where a 10 or 12 will not fit. Be...
Read Article →Prodigy Audio
SKU: NB3-10D4
The Prodigy Audio NB3-10d4 is a masterclass in space-efficient engineering. Designed for the most restrictive environments, this 10-inch shallow-mount subwoofer features a remarkably slim 3.000-inch mounting depth. Despite its low profile, it delivers a massive 600W RMS, powered by a high-strength motor with a BL of 23.365. With a refined Qts of 0.407 and an FS of 36.406Hz, the NB3-10d4 provides the punchy, authoritative low-end that enthusiasts demand in applications where a traditional driver simply will not fit.
The NB3-10d4 is built to handle heavy daily use, utilizing a 151.63g moving mass (Mms) and a specialized suspension system with a Cms of 74.178. This configuration ensures the 2.5-inch voice coil remains centered and controlled even at its 11mm Xmax limit. To maintain performance during extended play, the motor architecture is designed to manage thermal energy effectively within the compact cast-aluminum housing, ensuring the NB3-10d4 delivers consistent, uncompressed output in high-pressure, small-volume environments.
Engineered for the modern installer, the NB3-10d4 works best in a sealed enclosure of 0.75 to 1.0 ft³, per Prodigy, making it the perfect choice for under-seat truck boxes and stealth side-panel installs. With a 9.125-inch cutout and 10.250-inch overall diameter, it fits seamlessly into custom baffles. Its low 0.10 ft³ displacement allows you to maximize the internal air volume of your enclosure, ensuring the Dual 4-ohm NB3-10d4 translates every watt of power into clean, impactful acoustic energy.
Need a box for it? See the enclosures we cut for Prodigy NB2, NB3 and NB5 drivers on the Prodigy Audio subwoofer boxes page.
| Model / SKU | NB3-10d4 |
| RMS Power | 600 Watts |
| Fs (Hz) | 36.406 Hz |
| Xmax (One-Way) | 11mm |
| RE | 6.5 Ohms |
| Vas | 14.43 L |
| Qts | 0.407 |
| Qes | 0.495 |
| Qms | 2.282 |
| BL | 23.365 |
| Mms | 151.63 g |
| Cms | 74.178 |
| Sensitivity (Sens) | 86.9 dB |
| Mounting Depth | 3.000" |
| Cutout Diameter | 9.125" |
| Overall Diameter | 10.250" |
| Displacement | 0.10 ft³ |
Pro Tip: EBP is just one factor in enclosure design. Always use complete Thiele-Small parameters and modeling software for optimal results. Our custom enclosures are engineered specifically for each subwoofer's parameters.
The Efficiency Bandwidth Product (EBP) is calculated by dividing the subwoofer's resonant frequency (Fs) by its electrical damping (Qes). This single number helps predict which enclosure type will work best with your subwoofer.
| Enclosure | Volume | Tuning |
|---|---|---|
| Sealed (Recommended) | 0.75 - 1.0 ft³ | N/A |
| Ported | 0.8 - 1.0 ft³ | 35 Hz |
See every Prodigy Audio subwoofer box and enclosure, cut for the NB2, NB3 and NB5.
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