Sundown Audio Xv4 18" D1 Subwoofer | 3000W RMS
Brand : Sundown Audio
- SKU:
- Sundown-Audio-Xv4-18D1-Subwoofer
Sundown Audio Xv4 18" D1 Subwoofer — 3000W RMS
The Sundown Xv4 18" D1 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 D1
- 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 1-Ohm Voice Coil: Low-impedance wiring makes it easy to maximize RMS power from high-current amplifiers.
Technical Specifications (D1)
Electrical & T/S Parameters
| Spec | Value |
|---|---|
| RMS Power | 3000W |
| Peak Power | 6000W |
| Re (Ohms) | 2.05 |
| Fs (Hz) | 25.87 |
| Vas (L) | 93.67 |
| Qes | 0.63 |
| Qms | 4.13 |
| Qts | 0.54 |
| BL | 19.74 |
| Mms (grams) | 737.81 |
| Cms (uM/N) | 51.28 |
| Sensitivity (1W/1M) | 86 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" D1 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 D1?
A: At 2.05 ohms, this dual 1-ohm sub is built for low-impedance wiring, letting high-current mono amps push close to 3000W RMS for full power output.
Q: Is the Xv4 18 D1 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 D1 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 D1 and D2 versions?
A: The D1 (dual 1-ohm) version offers lower impedance options ideal for high-power, low-resistance amp setups, while the D2 (dual 2-ohm) gives more flexible wiring choices for matching a wider range of amplifiers.
Ready to Feel the Difference?
Don't settle for weak bass. Upgrade to the Sundown Audio Xv4 18" D1 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.
