Soundqubed HDB2.2 Series 8" Subwoofer 2" DVC 400 Watts RMS D2/D4
Soundqubed HDB2.2 Series 8" Subwoofer 2" DVC 400 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 HDB2.2 Series 8" Subwoofer 2" DVC 400 Watts RM...
Description
Description
SoundQubed HDB2.2-8 — 8" Subwoofer | 400W RMS | Dual 2 or Dual 4 Ohm
The SoundQubed HDB2.2-8 is a compact, hard-hitting 8" subwoofer built for enthusiasts who want real bass in tight spaces without breaking the bank. Rated at 400W RMS / 800W Peak, this driver delivers punchy, fast, and well-defined low-end that excels in daily driver builds, under-seat installs, and space-constrained custom enclosures. With a resonant frequency of 39 Hz (D2) / 40 Hz (D4) and sensitivity of 81.6 dB (D2) / 82.2 dB (D4), the HDB2.2-8 responds quickly and hits with authority — exactly what you want from an 8" daily driver sub.
The motor assembly features a 68 oz magnet and a 2" dual voice coil wound to 28mm, providing solid thermal management and dependable power handling for everyday use. The 10mm Xmax (18mm Xmech) delivers controlled linear excursion for clean bass at moderate output levels, while the 216 cm² cone area (SD) moves meaningful air for a compact 8" platform. Available in Dual 2 Ohm and Dual 4 Ohm configurations, the HDB2.2-8 wires to 1Ω, 2Ω, or 4Ω to match a wide range of mono amplifiers.
The HDB2.2-8 thrives in sealed enclosures from 0.2–1.0 ft³ for tight, accurate bass with fast transient response, or ported boxes from 0.7–1.5 ft³ for added output and extension. Whether you’re building a compact under-seat system, a budget-friendly daily driver setup, or a clean SQL build in a small vehicle, the HDB2.2-8 delivers consistent, quality performance. Pair it with a 150–400W RMS mono amplifier for best results.
Why Choose the SoundQubed HDB2.2-8?
- 400W RMS / 800W Peak Power Handling — Right-sized power for compact daily driver builds without over-amping your system.
- 68 oz Magnet Structure — Solid motor for a value-tier 8" driver, delivering reliable BL force and controlled cone movement.
- 2" Dual Voice Coil (28mm Wind) — Dual coil design provides wiring flexibility and improved heat dissipation for daily use.
- 10mm Xmax / 18mm Xmech — Controlled linear excursion for clean, accurate bass at everyday listening levels.
- 39 Hz Resonant Frequency (D2) — Fast, punchy Fs ideal for tight, responsive bass in compact enclosures.
- D2 or D4 Impedance Options — Wire to 1Ω, 2Ω, or 4Ω to match your amplifier’s optimal stable load.
- 81.6–82.2 dB Sensitivity — Efficient output that performs well with modest amplifier power — ideal for budget and compact builds.
- SoundQubed HDB2.2 Series Value — Quality construction and real-world performance at an accessible price point.
Amplifier & Enclosure Recommendations
Amplifier Pairing: The HDB2.2-8 is rated at 400W RMS, so target a mono amplifier delivering 150–400W RMS at your chosen final impedance. The Dual 2 Ohm variant wires to 1Ω (parallel) or 4Ω (series). The Dual 4 Ohm variant wires to 2Ω (parallel) or 8Ω (series). For most daily builds, wiring the D2 to 2Ω or the D4 to 2Ω gives you the best balance of power and amplifier stability. A 250–400W RMS mono block at 2Ω is the sweet spot for this driver.
Enclosure: For sealed installs, target 0.2–1.0 ft³ net internal volume for tight, accurate bass with excellent transient response — ideal for rock, country, and acoustic genres where punch and definition matter most. For ported builds, use 0.7–1.5 ft³ net with a port tuned to 35–45 Hz for added output and low-frequency extension — great for hip-hop, EDM, and bass-heavy content. The HDB2.2-8 is a natural fit for under-seat enclosures, compact custom boxes, and any install where space is at a premium.
Full Specifications — T/S Parameters
| Parameter | HDB2.2-8D2 | HDB2.2-8D4 |
|---|---|---|
| Woofer Size | 8" | 8" |
| RMS Power | 400W | 400W |
| Peak Power | 800W | 800W |
| Magnet Weight | 68 oz | 68 oz |
| Coil Diameter | 2 in | 2 in |
| Coil Length | 28 mm | 28 mm |
| Fs | 39 Hz | 40 Hz |
| Impedance | 2+2 Ohm | 4+4 Ohm |
| QMS | 4.96 | 4.39 |
| QES | 0.60 | 0.68 |
| QTS | 0.54 | 0.57 |
| VAS | 7.8 L | 7.6 L |
| Le | 1.20 mH | 1.62 mH |
| η₀ (No) | 0.08% | 0.08% |
| CMS | 0.157 mm/N | 0.151 mm/N |
| Sensitivity (1W/1m) | 81.6 dB | 82.2 dB |
| BL | 12.37 N/A | 15.38 N/A |
| Xmax (±) | 10 mm | 10 mm |
| Xmech (±) | 18 mm | 18 mm |
| SD | 216 cm² | 216 cm² |
Mounting Dimensions
| Model | A | B | C | D |
|---|---|---|---|---|
| HDB2.2-8D2 | 214 mm / 8.43" | 182 mm / 7.17" | 160 mm / 6.3" | 112 mm / 4.41" |
| HDB2.2-8D4 | 214 mm / 8.43" | 182 mm / 7.17" | 160 mm / 6.3" | 112 mm / 4.41" |
Enclosure Suggestions
| Enclosure Type | HDB2.2-8D2 | HDB2.2-8D4 |
|---|---|---|
| Sealed Enclosure | 0.2–1.0 ft³ | 0.2–1.0 ft³ |
| Ported Enclosure | 0.7–1.5 ft³ | 0.7–1.5 ft³ |
Frequently Asked Questions
Q: What amplifier should I pair with the HDB2.2-8?
A: Target a mono amplifier rated at 150–400W RMS at your final impedance. Wire the D2 to 1Ω or 4Ω, or the D4 to 2Ω or 8Ω. A 250–400W RMS mono block at 2Ω is the sweet spot for most daily builds.
Q: What’s the difference between the D2 and D4 versions?
A: Both handle the same power and share identical physical specs. The D2 (Dual 2 Ohm) wires to 1Ω or 4Ω; the D4 (Dual 4 Ohm) wires to 2Ω or 8Ω. Choose based on your amplifier’s stable impedance rating.
Q: What box size does the HDB2.2-8 need?
A: Sealed: 0.2–1.0 ft³ for tight, accurate bass. Ported: 0.7–1.5 ft³ tuned to 35–45 Hz for more output and extension. This driver is well-suited for under-seat enclosures and compact custom boxes.
Q: Is this sub good for daily use or competition?
A: The HDB2.2-8 is a daily driver sub — optimized for reliable, quality output at 400W RMS for everyday listening in compact installs. It delivers real bass performance at a price point that makes it one of the best values in the 8" class.
