Soundqubed HDX3.2 Series 12" Subwoofer 3" DVC 2,500 Watts RMS D2/D1
Soundqubed HDX3.2 Series 12" 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 12" Subwoofer 3" DVC 2,500 Watts...
Description
Description
SoundQubed HDX3.2-12 — 2,500W RMS Competition-Grade 12" Subwoofer
The SoundQubed HDX3.2 Series 12" subwoofer is a high-output, competition-ready car audio subwoofer built for enthusiasts who demand deep sub-bass, massive excursion, and thermal endurance. Rated at 2,500 watts RMS and 5,000 watts peak, the HDX3.2-12 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 HDX3.2-12 delivers massive linear cone travel, producing authoritative sub-bass extension down to a free-air resonance (Fs) of 28.4 Hz (D2) / 28.8 Hz (D1). The 530 cm² cone area (SD) and optimized Thiele-Small parameters make this woofer equally at home in a sealed enclosure for tight, accurate bass or a ported box for maximum SPL output.
Why Choose the SoundQubed HDX3.2-12?
- 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 (17.4 N/A D1 / 25.6 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 (28.4–28.8 Hz): Tuned for deep infrasonic bass reproduction — ideal for ported enclosures targeting 28–34 Hz tuning frequencies.
- Sealed or Ported Compatible: Recommended sealed volume 1.25–2.0 ft³ and ported 1.75–2.75 ft³ — versatile enough for any build style.
- 84.1–84.3 dB Sensitivity: Efficient enough to get loud on moderate amplifier power while scaling up cleanly with high-wattage amps.
Amplifier & Enclosure Recommendations
The HDX3.2-12 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 1.75–2.75 ft³ range will maximize SPL output and low-frequency extension. For tighter, more accurate SQL bass, a sealed box in the 1.25–2.0 ft³ range provides excellent transient response and cone control.
Electro Acoustic Specifications & Thiele Small Parameters
| Specification | HDX3.2-12D1 | HDX3.2-12D2 |
|---|---|---|
| Woofer Size | 12" | 12" |
| 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 | 28.8 Hz | 28.4 Hz |
| Impedance | 1+1 Ohm | 2+2 Ohm |
| QMS | 4.73 | 6.44 |
| QES | 0.42 | 0.39 |
| QTS | 0.39 | 0.37 |
| VAS | 31.1 L | 33.4 L |
| Le | 1.05 mH | 2.95 mH |
| η (No) | 0.17% | 0.46% |
| CMS | 0.08 mm/N | 0.08 mm/N |
| Sensitivity (1W/1M) | 84.3 dB | 84.1 dB |
| BL | 17.4 N/A | 25.6 N/A |
| Xmax (±) | 15 mm | 15 mm |
| Xmech (±) | 35 mm | 35 mm |
| SD | 530 cm² | 530 cm² |
Mounting Dimensions
| Model | A | B | C | D |
|---|---|---|---|---|
| HDX3.2-12D1 | 325 mm / 12.8" | 290 mm / 11.42" | 228 mm / 8.98" | 225 mm / 8.86" |
| HDX3.2-12D2 | 325 mm / 12.8" | 290 mm / 11.42" | 228 mm / 8.98" | 225 mm / 8.86" |
Enclosure Suggestions
| Enclosure Type | HDX3.2-12 D1/D2 |
|---|---|
| Sealed Enclosure | 1.25–2.0 ft³ |
| Ported Enclosure | 1.75–2.75 ft³ |
Frequently Asked Questions
What amplifier do I need for the SoundQubed HDX3.2-12?
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 HDX3.2-12 need?
For sealed, use 1.25–2.0 ft³ for tight, accurate bass. For ported, use 1.75–2.75 ft³ tuned to approximately 28–34 Hz for maximum SPL and deep bass extension.
Can this subwoofer handle daily use or is it competition-only?
The HDX3.2-12 is built for both. Its thermal management and linear excursion capability make it a strong daily driver at moderate power levels, while its 2,500W RMS rating and 300 oz motor make it equally capable in SPL and SQL competition builds.
