Soundqubed HDS3.3 Series 12" Subwoofer 1,500 Watts RMS D2/D4
Soundqubed HDS3.3 Series 12" Subwoofer 1,500 Watts RMS D2/D4 - Dual 2 Ohm is backordered and will ship as soon as it is back in stock.
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Soundqubed HDS3.3 Series 12" Subwoofer 1,500 Watts RMS D2/D4
Description
Description
SoundQubed HDS3.3-12 — 1,500W RMS Daily/SQL 12" Subwoofer
The SoundQubed HDS3.3 Series 12" subwoofer is a high-value, daily-driver and SQL-focused 12-inch subwoofer built for enthusiasts who want deep, accurate sub-bass with a larger cone area and more low-end authority than a 10". Rated at 1,500 watts RMS and 3,000 watts peak, the HDS3.3-12 is powered by a 160 oz magnet, a 3-inch diameter voice coil with a 40mm coil length, and a motor assembly tuned for controlled excursion and musical accuracy. Available in Dual 2 Ohm (D2) and Dual 4 Ohm (D4) configurations, this sub wires cleanly into a wide range of mono block amplifiers — making it an ideal choice for daily builds, SQL setups, and budget-conscious high-output systems.
With an Xmax of 13mm (±) and Xmech of 27mm (±), the HDS3.3-12 delivers controlled linear cone travel across its 530 cm² cone area (SD), producing clean sub-bass extension down to a free-air resonance (Fs) of 26.6 Hz (D2) / 33.2 Hz (D4). With sensitivity ratings of 83.3 dB on both configurations, this woofer is tuned for musical accuracy and daily listening — delivering tight, punchy bass that sounds great on every genre.
Why Choose the SoundQubed HDS3.3-12?
- 1,500W RMS / 3,000W Peak Power: Plenty of headroom for daily and SQL builds — pairs perfectly with mid-range mono block amplifiers in the 500–1,500W range.
- 160 oz Magnet Assembly: Solid motor force delivers BL of 19.7 N/A (D2) / 21.5 N/A (D4) for controlled, accurate cone movement across the full excursion range.
- 3" Voice Coil, 40mm Coil Length: Larger coil diameter improves thermal management for sustained daily use without voice coil fatigue.
- 13mm Xmax / 27mm Xmech: Well-tuned excursion for a 12" daily driver — deep, clean bass without over-excursion at moderate power levels.
- Dual 2 Ohm & Dual 4 Ohm Available: Wire D2 to 1Ω or 4Ω, wire D4 to 2Ω or 8Ω — compatible with a wide range of amplifier impedance ratings.
- Low Fs (26.6 Hz D2): Tuned for deep sub-bass reproduction — works great in both sealed and ported enclosures.
- Sealed or Ported Compatible: Recommended sealed volume 0.75–1.5 ft³ and ported 1.0–1.75 ft³ — versatile for any install.
- 530 cm² Cone Area: More cone area than the 10" for greater air displacement and deeper, fuller bass at the same power level.
Amplifier & Enclosure Recommendations
The HDS3.3-12 pairs best with a mono block amplifier rated between 500–1,500W RMS at your wired impedance. For the D2 (Dual 2 Ohm) variant, wire the coils in parallel for a 1Ω final load or in series for 4Ω. For the D4 (Dual 4 Ohm) variant, wire in parallel for 2Ω or in series for 8Ω. A Class D mono amp stable at 1Ω or 2Ω is the most common pairing for this driver.
For enclosures, a sealed box in the 0.75–1.5 ft³ range delivers tight, accurate bass ideal for SQL and daily listening. A ported box in the 1.0–1.75 ft³ range tuned to approximately 28–34 Hz will add more low-end extension and output for those who want a louder, deeper presentation.
Electro Acoustic Specifications & Thiele Small Parameters
| Specification | HDS3.3-12D2 | HDS3.3-12D4 |
|---|---|---|
| Woofer Size | 12" | 12" |
| RMS Power | 1,500 W | 1,500 W |
| Peak Power | 3,000 W | 3,000 W |
| Magnet Weight | 160 oz | 160 oz |
| Coil Diameter | 3 in | 3 in |
| Coil Length | 40 mm | 40 mm |
| Fs | 26.6 Hz | 33.2 Hz |
| Impedance | 2+2 Ohm | 4+4 Ohm |
| QMS | 6.49 | 6.37 |
| QES | 0.61 | 0.74 |
| QTS | 0.56 | 0.66 |
| VAS | 36.3 L | 34.5 L |
| Le | 2.46 mH | 3.43 mH |
| η (No) | 0.11% | 0.16% |
| CMS | 0.09 mm/N | 0.09 mm/N |
| Sensitivity (1W/1M) | 83.3 dB | 83.3 dB |
| BL | 19.7 N/A | 21.5 N/A |
| Xmax (±) | 13 mm | 13 mm |
| Xmech (±) | 27 mm | 27 mm |
| SD | 530 cm² | 530 cm² |
Mounting Dimensions
| Model | A | B | C | D |
|---|---|---|---|---|
| HDS3.3-12D2 | 325 mm / 12.8" | 290 mm / 11.42" | 186 mm / 7.32" | 210 mm / 8.27" |
| HDS3.3-12D4 | 325 mm / 12.8" | 290 mm / 11.42" | 186 mm / 7.32" | 210 mm / 8.27" |
Enclosure Suggestions
| Enclosure Type | HDS3.3-12 D2/D4 |
|---|---|
| Sealed Enclosure | 0.75–1.5 ft³ |
| Ported Enclosure | 1.0–1.75 ft³ |
Frequently Asked Questions
What amplifier do I need for the SoundQubed HDS3.3-12?
A mono block amplifier rated between 500–1,500W RMS at your wired impedance is ideal. The D2 wired to 1Ω or the D4 wired to 2Ω are the most common pairings. Any quality Class D mono amp stable at 1Ω or 2Ω will work great.
Should I choose the D2 or D4 version?
Choose D2 (Dual 2 Ohm) if your amplifier is stable at 1Ω (parallel) or 4Ω (series). Choose D4 (Dual 4 Ohm) if your amp is stable at 2Ω (parallel) or 8Ω (series). D2 is the most common choice for single-sub builds.
What size box does the HDS3.3-12 need?
For sealed, use 0.75–1.5 ft³ for tight, accurate daily bass. For ported, use 1.0–1.75 ft³ tuned to approximately 28–34 Hz for more output and low-end extension.
Is the HDS3.3-12 good for daily use?
Absolutely — the HDS3.3 Series is specifically designed for daily driving and SQL builds. Its 3" voice coil, 160 oz magnet, and 530 cm² cone area deliver fuller, deeper bass than the 10" while remaining a reliable, musical sub for everyday listening.
