Soundqubed HDX3 18" D2 Subwoofer | 1500W RMS
Brand : Soundqubed
- SKU:
- Soundqubed-HDX3-18D2-Subwoofer
Soundqubed HDX3 18" D2 Subwoofer | 1500W RMS – Competition-Grade Bass Performance
Experience Thunderous, High-Excursion Bass with Maximum Efficiency
The Soundqubed HDX3 18" D2 Subwoofer is built for serious bass enthusiasts and competitors who demand power, precision, and extreme durability. With 1500W RMS and an explosive 4500W peak power, this subwoofer is designed to handle high-output bass with efficiency and control. Featuring a Made in the USA dual voice coil, a powerful motor, and advanced cooling technology, the HDX3 18" D2 is perfect for SPL competitors and bass lovers who want deep, punchy low frequencies without distortion.
Unmatched Power & High-Performance Features
1500W RMS / 4500W Peak Power – Designed for high-power bass applications.
3" Dual 2-Ohm Voice Coil – Optimized for flexible wiring and amplifier efficiency.
Fs: 27.59 Hz – Engineered for deep, low-frequency output.
Sensitivity: 90.64 dB – Converts power efficiently for high SPL performance.
Xmax: 36mm – Massive excursion for deep, hard-hitting bass.
Engineered for Maximum Strength & Longevity
Thick Top Plate & High Motor Force – Provides tight, controlled bass with high efficiency.
4-Spoke Cast Aluminum Frame – Accommodates a larger spider for improved accuracy and low tuning.
High-Roll Surround & Pulp-Blend Cone – Lighter, stronger, and designed for extreme excursion.
Black-Anodized Aluminum Former – Enhances heat dissipation for extended coil life.
Double Slit Venting & High-Temp Resin – Ensures maximum cooling for long-lasting performance.
Optimized for High SPL & Efficient Cooling
Precision Airflow Design – Prevents overheating during extreme bass output.
Enhanced Heat Dissipation – Keeps your subwoofer running cool at high power levels.
Recommended Enclosure & Tuning
Ported Enclosure: 5 – 7 cu ft – Designed for optimal low-end extension and deep bass response.
Mounting Depth: 10.5” – Built for high-performance enclosure setups.
Circle Cutout: 16 9/16” – Precision-fit for seamless installation.
Why Choose the HDX3 18" D2?
The Soundqubed HDX3 18" D2 Subwoofer is a top choice for competitors, bassheads, and serious car audio enthusiasts who crave hard-hitting, competition-grade bass. Whether you're pushing high SPL numbers or tuning for deep, resonant low frequencies, this subwoofer delivers extreme performance, durability, and efficiency.
Upgrade your system with the Soundqubed HDX3 18" D2 and experience bass like never before!
Order now and bring deep, competition-level bass to your build!
Specifications
| Model | HDX310 | HDX312 | HDX315 | HDX318 |
| RMS Power | 1500 W | 1500 W | 1500 W | 1500 W |
| Peak Power | 4500 W | 4500 W | 4500 W | 4500 W |
| Magnet Weight | 300 oz | 300 oz | 300 oz | 300 oz |
| Coil Diameter | 3" | 3" | 3" | 3" |
| Coil Length | 50 mm | 50 mm | 50 mm | 50 mm |
| Usable Throw | 68 mm | 68 mm | 68 mm | 68 mm |
| Woofer Size | 10" | 12" | 15" | 18" |
| F(s) | 30.04 Hz | 26.92 Hz | 26 Hz | 27.59 Hz |
| Impedance | D1/D2 | D1 / D2 | D1 / D2 | D1 / D2 |
| Q(ms) | 4.88 | 4.95 | 4.847 | 5.777 |
| Q(es) | 0.285 | 0.3409 | 0.3665 | 0.4724 |
| Q(ts) | 0.267 | 0.3189 | 0.3408 | 0.4367 |
| V(as) | 12.98 Liters | 28.59 Liters | 78.08 Liters | 168.6 Liters |
| M(ms) | 281.4 grams | 440.9 grams | 472.8 grams | 410.9 grams |
| C(ms) | 0.074 | 0.079 | 0.082 | 0.081 |
| Sensitivity 1W/1m | 83.9 dB | 84.03 dB | 87.41 dB | 90.64 dB |
| Xmax | 36mm | 36mm | 36mm | 36mm |
| Sd | .044 m2 | 0.051 m2 | 0.082 m2 | .121 m2 |
| Displacement | 0.14³ | 0.16³ | 0.18³ | 0.23³ |
| Mounting Depth | 7 13/16" | 8 7/8" | 9 1/2" | 10.5" |
| Circle Cutout | 9 3/8" | 11 1/2" | 13 7/8" | 16 9/16" |
| Ported Enclosure (Cu Ft): | 1.25-1.75 FT³ | 1.75-2.75 FT³ | 3-6 FT³ | 5-7 FT³ |
