Soundqubed HDX3.2 Series 15" Subwoofer 3" DVC 2,500 Watts RMS D2/D1
Soundqubed HDX3.2 Series 15" Subwoofer 3" DVC 2,500 Watts RMS D2/D1 - Dual 1 Ohm is backordered and will ship as soon as it is back in stock.
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Soundqubed HDX3.2 Series 15" Subwoofer 3" DVC 2,500 Watts...
Description
Description
SoundQubed HDX3.2-15 — 2,500W RMS Competition-Grade 15" Subwoofer
The SoundQubed HDX3.2 Series 15" subwoofer is a high-output, competition-ready car audio subwoofer built for bass enthusiasts who demand ground-shaking low-end authority, massive cone area, and thermal endurance in a 15-inch platform. Rated at 2,500 watts RMS and 5,000 watts peak, the HDX3.2-15 is powered by a 300 oz magnet, a 3-inch diameter voice coil with a 50mm coil length, and a motor assembly engineered for extreme linear excursion. Available in Dual 1 Ohm (D1) and Dual 2 Ohm (D2) configurations, this sub wires cleanly into virtually any high-power mono block amplifier setup — whether you're building a daily SQL system or a full-tilt SPL competition build.
With an Xmax of 15mm (±) and Xmech of 35mm (±), the HDX3.2-15 delivers massive linear cone travel across its 805 cm² cone area (SD), producing authoritative sub-bass extension down to a free-air resonance (Fs) of 29.0 Hz (D2) / 29.5 Hz (D1). With sensitivity ratings of 87.5–87.8 dB, this woofer is highly efficient and digs deep into the sub-bass frequencies that define hip-hop, EDM, trap, and bass-heavy music.
Why Choose the SoundQubed HDX3.2-15?
- 2,500W RMS / 5,000W Peak Power: Handles extreme amplifier output without flinching — built for high-power mono block amplifiers in daily and competition installs.
- 300 oz Magnet Assembly: Massive motor force delivers exceptional BL (16.8 N/A D1 / 26.3 N/A D2) for precise, controlled cone movement at high excursion levels.
- 3" Voice Coil, 50mm Coil Length: Extended coil length maximizes gap interaction for superior thermal management and sustained high-power performance.
- 15mm Xmax / 35mm Xmech: Exceptional linear and mechanical excursion — deep, authoritative bass without bottoming out.
- Dual 1 Ohm & Dual 2 Ohm Available: Wire D1 to 0.5Ω or 2Ω, wire D2 to 1Ω or 4Ω — maximum flexibility for any amplifier's stable impedance load.
- Low Fs (29.0–29.5 Hz): Tuned for deep infrasonic bass reproduction — ideal for ported enclosures targeting 28–34 Hz tuning frequencies.
- Ported Enclosure Optimized: Recommended ported volume 3–6 ft³ — built to breathe and move in a properly tuned vented box.
- 87.5–87.8 dB Sensitivity: Highly efficient — gets seriously loud without demanding every last watt from your amplifier.
Amplifier & Enclosure Recommendations
The HDX3.2-15 is designed to be paired with a high-output mono block amplifier capable of delivering 2,500W RMS or more at the wired impedance load. For the D1 (Dual 1 Ohm) variant, wire the coils in parallel for a 0.5Ω final load or in series for 2Ω. For the D2 (Dual 2 Ohm) variant, wire in parallel for 1Ω or in series for 4Ω. Most high-power Class D mono amps are stable at 1Ω, making the D2 the most common choice for single-sub builds.
For enclosures, a ported box tuned to 28–34 Hz in the 3–6 ft³ range will maximize SPL output and low-frequency extension. Sealed enclosures are not recommended for this driver — it is optimized for ported loading where its large cone area and long-throw suspension can fully express their potential.
Electro Acoustic Specifications & Thiele Small Parameters
| Specification | HDX3.2-15D1 | HDX3.2-15D2 |
|---|---|---|
| Woofer Size | 15" | 15" |
| RMS Power | 2,500 W | 2,500 W |
| Peak Power | 5,000 W | 5,000 W |
| Magnet Weight | 300 oz | 300 oz |
| Coil Diameter | 3 in | 3 in |
| Coil Length | 50 mm | 50 mm |
| Fs | 29.5 Hz | 29.0 Hz |
| Impedance | 1+1 Ohm | 2+2 Ohm |
| QMS | 4.87 | 6.63 |
| QES | 0.47 | 0.44 |
| QTS | 0.42 | 0.41 |
| VAS | 71.5 L | 73.5 L |
| Le | 0.98 mH | 3.05 mH |
| η (No) | 0.38% | 0.36% |
| CMS | 0.07 mm/N | 0.07 mm/N |
| Sensitivity (1W/1M) | 87.8 dB | 87.5 dB |
| BL | 16.8 N/A | 26.3 N/A |
| Xmax (±) | 15 mm | 15 mm |
| Xmech (±) | 35 mm | 35 mm |
| SD | 805 cm² | 805 cm² |
Mounting Dimensions
| Model | A | B | C | D |
|---|---|---|---|---|
| HDX3.2-15D1 | 390 mm / 15.4" | 350 mm / 13.78" | 228 mm / 8.98" | 235 mm / 9.25" |
| HDX3.2-15D2 | 390 mm / 15.4" | 350 mm / 13.78" | 228 mm / 8.98" | 235 mm / 9.25" |
Enclosure Suggestions
| Enclosure Type | HDX3.2-15 D1/D2 |
|---|---|
| Sealed Enclosure | 1.75–3.75 ft³ |
| Ported Enclosure | 3–6 ft³ |
Frequently Asked Questions
What amplifier do I need for the SoundQubed HDX3.2-15?
You need a mono block amplifier rated at 2,500W RMS or more at your wired impedance. The D2 wired to 1Ω or the D1 wired to 2Ω are the most common pairings. Look for a high-current Class D mono amp stable at 1Ω for best results.
Should I choose the D1 or D2 version?
Choose D2 (Dual 2 Ohm) if your amplifier is stable at 1Ω (parallel) or 4Ω (series) — this is the most common configuration. Choose D1 (Dual 1 Ohm) if your amp is stable at 0.5Ω (parallel) or you need a 2Ω final load (series).
What size box does the HDX3.2-15 need?
For ported, use 3–6 ft³ tuned to approximately 28–34 Hz for maximum SPL and deep bass extension. A sealed box in the 1.75–3.75 ft³ range works for tighter, more controlled bass.
Can this subwoofer handle daily use or is it competition-only?
The HDX3.2-15 is built for both. Its 87.5–87.8 dB sensitivity means it gets loud efficiently on moderate power, while its 2,500W RMS rating and 300 oz motor make it equally capable in SPL and SQL competition builds.
