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Description
Sundown Audio - X-Series v.4 18”The Sundown Xv4 18 Subwoofer delivers unmatched power and control for serious bass enthusiasts. Built with high grade X v. 4 coils, this subwoofer is designed to handle up to 3000W RMS 6000W peak power, ensuring maximum output without distortion. Its optimized design enhances air movement and cooling, providing long lasting performance even under heavy use. The advanced motor structure and large cone area (SD 113. 41) create powerful low frequency
- The Sundown Xv4 18″ Subwoofer delivers unmatched power and control for serious bass enthusiasts. Built with high-grade X v.4 coils, this subwoofer is designed to handle up to 3000W RMS / 6000W peak power, ensuring maximum output without distortion.
- Its optimized design enhances air movement and cooling, providing long-lasting performance even under heavy use. The advanced motor structure and large cone area (SD 113.41) create powerful low-frequency response and clean sound reproduction.
- Perfect for sealed or ported enclosures, the Xv4 18″ gives you flexibility in setup and tuning — whether for SPL competition or everyday high-quality listening.
- Durable, reliable, and beautifully crafted, this subwoofer is the next-level upgrade your sound system deserves.
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18″ Xv4 Series Subwoofer
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3000W RMS / 6000W Peak Power
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Dual 1-Ohm or Dual 2-Ohm Voice Coil Options
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Precision-engineered X v.4 Coils for stability
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Heavy-duty motor with 9.25″ diameter
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Deep bass response with 35 mm Xmax
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Sealed or ported enclosure compatibility
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Recommended Port Tuning: 32 Hz
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Built for extreme durability and clean sound
Specification Value RMS Power 3000 W Peak Power 6000 W Displacement 0.28 cu ft Mounting Depth 15″ Outside Diameter 18.42″ Cutout Diameter 16.69″ Motor Diameter 9.25″ Sealed Enclosure Not Recommended Ported Enclosure 7.00 cu ft Recommended Port Tuning 32 Hz Recommended Port Area 112 sq in 4th Order Sealed Side 3.0 cu ft 4th Order Ported Side 9.0 cu ft 4th Order Port Area 180 sq in 4th Order Port Length 8″ Xmax 35 mm SD (Cone Area) 113.41 RE (Ohms) 2.05 / 3.74 FS (Hz) 25.87 / 25.58 VAS (L) 93.67 Qes 0.63 / 0.55 Qms 4.13 / 4.03 Qts 0.54 / 0.84 BL (NA) 19.74 / 26.8 Mms 737.81 / 656.74 Sensitivity 86 / 87 dB T/S Specs RMS Power (D2)RMS Power (D1)Peak Power (D1)Peak Power (D2)RE D1 (Ohms)RE D2 (Ohms)FS D1 (Hz)FS D2 (Hz)VAS D1 (L)VAS D2 (L)Qes D1Qes D2Qms D1Qms D2Qts D1Qts D2BL D1 (NA)BL D2 (NA)Mms D1 (Grams)Mms D2 (Grams)Cms D1 (uM/N)Cms D2 (uM/N)Sens D1 (dB @ 1w/1m)Sens D2 (dB @ 1w/1m)Xmax D1Xmax D2Subwoofer Measurements Displacement (Inches)Depth (Inches)Cutout (Inches)Motor Diameter (Inches)Ported Enclosure Specs Ported Enclosure SizeRecommended Port AreaRecommended Port Tuning4th Order Enclosure Specs 4th Order Sealed Side4th Order Ported Side4th Order Port Area4th Order Port Length
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 4
Soft All-in-One Queen Bedding Set With Lightweight Comforter
Color: Beige, Size: Queen
This 7-piece queen bedding set is a solid all-in-one option for anyone looking to refresh a bedroom with a clean, aesthetic look without spending much. The comforter has a lightweight feel with a soft crinkled texture that gives it a relaxed, lived-in appearance while still looking modern and put together on the bed.
The included sheets and pillowcases are soft and smooth against the skin, with enough comfort for year-round use. The comforter itself is light but still provides enough warmth for most seasons, making it practical for both warmer and cooler months.
Fit is generally accurate for standard queen mattresses, and the set comes complete with everything needed, which makes setup simple and convenient. The overall look is cohesive, with a soft beige tone that blends easily into most room styles.
While it is not a luxury heavyweight bedding set, it offers good comfort, style, and value for the price, making it a strong choice for guest rooms, first apartments, or an easy bedroom upgrade.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Warm Color, Cozy Feel & Complete Bedding Set
Color: Burnt Orange, Size: Queen, Color: Burnt Orange, Size: Queen
This comforter set is a great way to refresh a bedroom with both style and comfort. The burnt orange color adds a warm, inviting look that really stands out without being overwhelming.
Design: The pre-washed crinkled texture gives it a relaxed, modern feel that looks effortlessly styled.
Comfort: Soft and cozy, making it comfortable for year-round use.
Set Value: The 7-piece set includes everything needed for a complete, coordinated bed setup.
Fit: Fits a queen bed nicely and looks full and well-dressed.
The color pairs well with neutrals and adds a rich, cozy vibe to the space.
Overall, this is a stylish, comfortable bedding set that offers great value and instantly upgrades your room.
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Reviewed in the United States on June 10, 2026
★★★★★ 3
Standard Comforter. Thin Scratchy Sheets
Color: Dark Green, Size: Queen
This is an ok set for the price. I’m mostly using the comforter for a guest room. It’s a light-medium thickness. The color and size are true to description.
The sheets that come with the set are very thin and not as soft as the comforter.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Comforter is nice, sheets are alright. Color is true!
Color: Burnt Orange, Size: Queen
This is a decent comforter set. The actual comforter isn’t too heavy, and would be perfect spring through fall in the Midwest. It’s a true queen size fit and the burnt orange color looks as it does in the photos. I ordered these before it mentioned they’re polyester. They definitely don’t feel as breathable as cotton sheets but as far polyester goes, they feel soft. The sheets wrinkle easily but the comforter feels durable. If you’re looking for an affordable sheet set and you’re cool with polyester, this is a good option.
Also of note is that 2 of the pillow cases have a little extra fabric on the outer rim to look more “decorative.”
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Comfortable and Attractive Bedding Set That Offers Great Value
Color: Pink, Size: Queen
This queen bedding set is a nice combination of comfort and style. The pink color looks beautiful, and the textured comforter gives the bed a cozy, modern appearance. The sheets feel soft and comfortable, while the comforter is lightweight yet provides enough warmth for a restful night’s sleep. I appreciate that the set includes everything needed for a complete bedding setup, making it a convenient option. It’s also easy to care for and holds its appearance well after washing. While it may not have the feel of a premium luxury set, for the price it’s not bad at all and offers solid value. Overall, it’s a great choice for anyone looking for an affordable and attractive bedding set.
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Reviewed in the United States on June 2, 2026