Sundown Audio X-Series Xv4 18" D2 Subwoofer | 3000W RMS
Brand : Sundown Audio
- SKU:
- Sundown-Audio-Xv4-18D2-Subwoofer
Sundown Audio Xv4 18" D2 Subwoofer — 3000W RMS
The Sundown Xv4 18" D2 Subwoofer delivers serious, competition-grade bass without breaking the bank. Built with precision-engineered X v.4 voice coils, this sub handles 3000W RMS / 6000W peak power for distortion-free output even at extreme volumes.
Whether you're building your first SPL setup or upgrading a daily-driver SQL system, the Xv4 18 gives you the headroom and durability to push limits safely.
Why Choose the Sundown Xv4 18 D2
- Massive Power Handling: 3000W RMS / 6000W peak means you can run big amplifiers without fear of blown coils.
- Deep, Clean Bass: 30mm Xmax allows for huge cone excursion, producing tight, accurate low-end with zero mechanical noise.
- Heavy-Duty 9.25" Motor: A larger motor structure improves cooling and control, extending the subwoofer's lifespan under daily abuse.
- Versatile Enclosure Compatibility: Works in sealed or ported boxes, making it ideal for SPL competitions or everyday SQL listening.
- Dual 2-Ohm Voice Coil: Flexible wiring options simplify amp matching for beginners and pros alike.
Technical Specifications (D2)
Electrical & T/S Parameters
| Spec | Value |
|---|---|
| RMS Power | 3000W |
| Peak Power | 6000W |
| Re (Ohms) | 3.74 |
| Fs (Hz) | 25.58 |
| Vas (L) | 175.8 |
| Qes | 0.55 |
| Qms | 4.03 |
| Qts | 0.84 |
| BL | 26.8 |
| Mms (grams) | 656.74 |
| Cms (uM/N) | 58.9 |
| Sensitivity (1W/1M) | 87 dB |
| Xmax | 30mm |
Physical Dimensions
- Displacement: 0.28 cu.ft.
- Depth: 15"
- Cutout: 16.69"
- Motor Diameter: 9.25"
Recommended Enclosure Builds
Ported Enclosure
- Box Size: 7.00 cu ft
- Port Area: 112 sq in
- Tuning Frequency: 32 Hz
4th Order Enclosure
- Sealed Chamber: 3.0 cu ft
- Ported Chamber: 9.0 cu ft
- Port Area: 180 sq in
- Port Length: 8"
Built to Last — Trust the Sundown Name
Sundown Audio has built its reputation on performance, durability, and value within the car audio community. The Xv4 series uses precision-engineered X v.4 coils and a reinforced motor structure designed for years of high-output use.
Every Xv4 18" D2 sub is backed by Sundown Audio's manufacturer warranty, giving you peace of mind whether you're a first-time installer or a seasoned competitor. Amped Up Car Audio ships every order securely packaged to prevent shipping damage.
Frequently Asked Questions
Q: What amplifier do I need for the Sundown Xv4 18 D2?
A: At 3.74 ohms (D2 wired in series or parallel configurations), pair it with an amp capable of delivering close to 3000W RMS for full power output.
Q: Is the Xv4 18 D2 good for SPL competitions?
A: Yes — the high Xmax (30mm), heavy-duty motor, and 6000W peak handling make the Xv4 18 a strong choice for SPL builds.
Q: Can I use the Sundown Xv4 18 D2 in a sealed box?
A: Absolutely. The Xv4 18 performs well in both sealed and ported enclosures, with the ported design (7 cu ft, tuned to 32 Hz) recommended for maximum output.
Q: What's the difference between the Xv4 18 D2 and D1 versions?
A: The D2 (dual 2-ohm) version offers more flexible wiring options for matching impedance with various amplifiers, while the D1 (dual 1-ohm) is better suited for low-impedance, high-power amp setups.
Ready to Feel the Difference?
Don't settle for weak bass. Upgrade to the Sundown Audio Xv4 18" D2 Subwoofer today and experience the power, clarity, and durability that serious bassheads demand. Order now from Amped Up Car Audio and get your system competition-ready.
