Soundqubed HDX3.2 Series 18" Subwoofer 3" DVC 2,500 Watts RMS D2/D1
Key features
- Subwoofer size: 18.0 inches
- RMS power per subwoofer: 2500 W
- Voice-coil options: D1, D2
- Mounting depth: 11.02 in / 280 mm
- Mounting cutout diameter: 16.73 in / 425 mm
- Linear excursion (Xmax): ±15 mm
Soundqubed HDX3.2 Series 18" 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.
Soundqubed HDX3.2 Series 18" 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.
Description
Description
Product Overview
The SoundQubed HDX3.2-18 is an 18-inch subwoofer built for high-output car audio systems. Its 2,500-watt RMS rating, 1,200 cm² cone area, and dual voice-coil options give you key details to weigh when planning a powerful subwoofer build.
Key Features & Benefits
- 2,500 watts RMS: Match it with a mono amplifier rated to deliver at least 2,500 watts RMS at your final wired impedance.
- Dual 1-ohm or dual 2-ohm coils: Choose a wiring option that suits your amplifier’s stable load.
- 18-inch cone with 1,200 cm² SD: The large cone area supports substantial air displacement.
- 15 mm Xmax (±): The stated linear excursion gives you a key figure for evaluating the driver’s movement range.
- Ported enclosure recommendation: The suggested 5–7 ft³ volume provides a starting point for planning a vented enclosure.
Technical Specifications
| Specification | HDX3.2-18D1 | HDX3.2-18D2 |
|---|---|---|
| Woofer Size | 18" | 18" |
| 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 | 31.6 Hz | 29.3 Hz |
| Impedance | 1+1 Ohm | 2+2 Ohm |
| QMS | 5.88 | 5.52 |
| QES | 0.61 | 0.74 |
| QTS | 0.55 | 0.43 |
| VAS | 112.1 L | 112.9 L |
| Le | 1.02 mH | 2.92 mH |
| η (No) | 0.57% | 0.59% |
| CMS | 0.06 mm/N | 0.06 mm/N |
| Sensitivity (1W/1M) | 89.6 dB | 89.7 dB |
| BL | 16.4 N/A | 28.5 N/A |
| Xmax (±) | 15 mm | 15 mm |
| Xmech (±) | 35 mm | 35 mm |
| SD | 1,200 cm² | 1,200 cm² |
| Model | A | B | C | D |
|---|---|---|---|---|
| HDX3.2-18D1 | 465 mm / 18.3" | 425 mm / 16.73" | 228 mm / 8.98" | 280 mm / 11.02" |
| HDX3.2-18D2 | 465 mm / 18.3" | 425 mm / 16.73" | 228 mm / 8.98" | 280 mm / 11.02" |
| Enclosure Type | HDX3.2-18 D1/D2 |
|---|---|
| Sealed Enclosure | 4.0–6.5 ft³ |
| Ported Enclosure | 5–7 ft³ |
Why Choose This Product?
The HDX3.2-18 combines a 3-inch voice coil, 50 mm coil length, and 300 oz magnet in an 18-inch driver. Its listed Xmax is 15 mm (±), and its Xmech is 35 mm (±). These figures help you compare excursion and motor specifications while choosing a subwoofer for your build.
Choose between D1 and D2 based on the final impedance your amplifier can handle. The product details list ported and sealed enclosure volume ranges, giving you options to consider when planning for your installation.
Installation & Compatibility Notes
- D1 wiring: Parallel wiring gives a 0.5Ω final load; series wiring gives a 2Ω final load.
- D2 wiring: Parallel wiring gives a 1Ω final load; series wiring gives a 4Ω final load.
- Amplifier rating: The source recommends a mono amplifier rated for 2,500 watts RMS or more at the wired impedance.
- Enclosure planning: The suggested ported volume is 5–7 ft³, tuned to 28–34 Hz. The suggested sealed volume is 4.0–6.5 ft³.
- Mounting dimensions: Check the listed A–D measurements against your available installation space before building or fitting an enclosure.
Frequently Asked Questions
What amplifier rating is recommended for the HDX3.2-18?
The source recommends a mono amplifier rated at 2,500 watts RMS or more at the final wired impedance.
What final impedance can I wire each version to?
The D1 version can be wired to 0.5Ω in parallel or 2Ω in series. The D2 version can be wired to 1Ω in parallel or 4Ω in series.
What enclosure size and tuning are recommended?
The listed ported enclosure volume is 5–7 ft³, with a suggested tuning range of 28–34 Hz. The listed sealed enclosure volume is 4.0–6.5 ft³.
What mounting dimensions should I check?
Both versions list A: 465 mm / 18.3", B: 425 mm / 16.73", C: 228 mm / 8.98", and D: 280 mm / 11.02". Compare these measurements with your installation plans.
Explore More
Shop for the SoundQubed HDX3.2-18 at 12 Volt Outlet. Want to learn more about SoundQubed? Explore our SoundQubed brand profile.
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Suggestions use 75–125% of the subwoofer’s RMS rating at the wiring load shown. Check wiring, enclosure needs, electrical capacity and installation space. Set gain and filters correctly to avoid overpowering the subwoofer. Buying more than one subwoofer changes the match.
