Soundqubed HDS2.3 Series 6.5" Subwoofer 2.5" DVC 500 Watts RMS D2/D4
Soundqubed HDS2.3 Series 6.5" Subwoofer 2.5" DVC 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 HDS2.3 Series 6.5" Subwoofer 2.5" DVC 500 Watt...
Description
Description
SoundQubed HDS2.3-6 — 6.5" Subwoofer | 500W RMS | Dual 2 or Dual 4 Ohm
The SoundQubed HDS2.3-6 is a compact, high-output 6.5" subwoofer engineered for enthusiasts who demand real bass in tight spaces. Rated at 500W RMS / 1,000W Peak, this driver punches well above its size class — delivering tight, authoritative low-end whether you're building a daily SQL system or a space-constrained competition entry. With a resonant frequency of 53.0 Hz and a sensitivity of 79.5 dB (D2) / 80.2 dB (D4), the HDS2.3-6 responds fast and hits hard without sacrificing clarity.
Under the cone, SoundQubed packed a 63 oz magnet and a 2" dual voice coil with 26mm of winding length for exceptional thermal management in a compact motor. The 9mm Xmax (17mm Xmech) gives this 6.5" driver surprising linear excursion, while the 139 cm² cone area (SD) moves serious air for its size. Available in Dual 2 Ohm and Dual 4 Ohm configurations, the HDS2.3-6 wires to 1Ω, 2Ω, or 4Ω final loads to match virtually any mono amplifier on the market.
The HDS2.3-6 thrives in sealed enclosures from 0.25–0.5 ft³ for tight, accurate bass, or ported boxes from 0.25–0.75 ft³ for added output and extension. Ideal for compact builds, under-seat installs, motorcycle audio, and any application where space is at a premium but bass quality is non-negotiable. Pairs perfectly with a 150–300W RMS mono amplifier for daily use.
Why Choose the SoundQubed HDS2.3-6?
- 500W RMS / 1,000W Peak Power Handling — Serious output from a 6.5" platform, built for daily and SQL applications.
- 63 oz Magnet Structure — Oversized motor for a 6.5" driver, delivering strong BL force and tight transient response.
- 2" Dual Voice Coil (26mm Wind) — Extended coil length improves heat dissipation and keeps the driver cool under sustained power.
- 9mm Xmax / 17mm Xmech — Impressive linear excursion for a compact sub, maximizing output without over-excursion.
- D2 or D4 Impedance Options — Wire to 1Ω, 2Ω, or 4Ω to match your amplifier's optimal load.
- 79.5–80.2 dB Sensitivity — Efficient enough to perform well with modest amplifier power.
- Compact Enclosure Compatibility — Sealed 0.25–0.5 ft³ or ported 0.25–0.75 ft³ for maximum install flexibility.
- SoundQubed HDS2.3 Series Build Quality — Engineered for real-world durability with competition-grade materials at a daily-driver price point.
Amplifier & Enclosure Recommendations
Amplifier Pairing: The HDS2.3-6 is rated at 500W RMS, so target a mono amplifier delivering 150–500W 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. Avoid exceeding rated RMS — this driver is built for quality output, not abuse.
Enclosure: For sealed installs, target 0.25–0.5 ft³ net internal volume for tight, accurate bass with excellent transient response — ideal for music genres like rock, country, and jazz. For ported builds, use 0.25–0.75 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. Under-seat enclosures and compact custom boxes are ideal applications for this driver.
Full Specifications — T/S Parameters
| Parameter | HDS2.3-6D2 | HDS2.3-6D4 |
|---|---|---|
| Woofer Size | 6.5" | 6.5" |
| RMS Power | 500W | 500W |
| Peak Power | 1,000W | 1,000W |
| Magnet Weight | 63 oz | 63 oz |
| Coil Diameter | 2 in | 2 in |
| Coil Length | 26 mm | 26 mm |
| Fs | 53.0 Hz | 53.0 Hz |
| Impedance | 2+2 Ohm | 4+4 Ohm |
| QMS | 8.57 | 6.21 |
| QES | 0.77 | 0.81 |
| QTS | 0.69 | 0.72 |
| VAS | 2.9 L | 2.9 L |
| Le | 1.53 mH | 1.68 mH |
| η₀ (No) | 0.05% | 0.05% |
| CMS | 0.11 mm/N | 0.11 mm/N |
| Sensitivity (1W/1m) | 79.5 dB | 80.2 dB |
| BL | 11.7 N/A | 15.3 N/A |
| Xmax (±) | 9 mm | 9 mm |
| Xmech (±) | 17 mm | 17 mm |
| SD | 139 cm² | 139 cm² |
Mounting Dimensions
| Model | A | B | C | D |
|---|---|---|---|---|
| HDS2.3-6D2 | 180 mm / 7.09" | 150 mm / 5.9" | 140 mm / 5.51" | 109 mm / 4.29" |
| HDS2.3-6D4 | 180 mm / 7.09" | 150 mm / 5.9" | 140 mm / 5.51" | 109 mm / 4.29" |
Enclosure Suggestions
| Enclosure Type | HDS2.3-6D2 | HDS2.3-6D4 |
|---|---|---|
| Sealed Enclosure | 0.25–0.5 ft³ | 0.25–0.5 ft³ |
| Ported Enclosure | 0.25–0.75 ft³ | 0.25–0.75 ft³ |
Frequently Asked Questions
Q: What amplifier should I pair with the HDS2.3-6?
A: Target a mono amplifier rated at 150–500W RMS at your final impedance. Wire the D2 to 1Ω or 4Ω, or the D4 to 2Ω or 8Ω. A 300W RMS amp 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 HDS2.3-6 need?
A: Sealed: 0.25–0.5 ft³ for tight, accurate bass. Ported: 0.25–0.75 ft³ tuned to 35–45 Hz for more output and extension. This driver is well-suited for compact under-seat or custom enclosures.
Q: Is this sub good for daily use or competition?
A: The HDS2.3-6 is primarily a daily SQL driver — optimized for sound quality and reliable output at 500W RMS. It's not a dedicated SPL competition sub, but it will outperform most drivers in its class for everyday listening and moderate SQL builds.
