SKU: 95896848534

Sundown Audio - X-Series v.4 18”

Sale price$697.50 Regular price$775.00
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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.
  • 18″ Xv4 Series Subwoofer

  • 3000W RMS / 6000W Peak Power

  • Dual 1-Ohm or Dual 2-Ohm Voice Coil Options

  • Precision-engineered X v.4 Coils for stability

  • Heavy-duty motor with 9.25″ diameter

  • Deep bass response with 35 mm Xmax

  • Sealed or ported enclosure compatibility

  • Recommended Port Tuning: 32 Hz

  • 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)
    3000
    RMS Power (D1)
    3000
    Peak Power (D1)
    6000
    Peak Power (D2)
    6000
    RE D1 (Ohms)
    2.05
    RE D2 (Ohms)
    3.74
    FS D1 (Hz)
    25.87
    FS D2 (Hz)
    25.58
    VAS D1 (L)
    93.67
    VAS D2 (L)
    1.7.58
    Qes D1
    0.63
    Qes D2
    0.55
    Qms D1
    4.13
    Qms D2
    4.03
    Qts D1
    0.54
    Qts D2
    0.84
    BL D1 (NA)
    19.74
    BL D2 (NA)
    26.8
    Mms D1 (Grams)
    737.81
    Mms D2 (Grams)
    656.74
    Cms D1 (uM/N)
    51.28
    Cms D2 (uM/N)
    58.9
    Sens D1 (dB @ 1w/1m)
    86
    Sens D2 (dB @ 1w/1m)
    87
    Xmax D1
    35mm
    Xmax D2
    35mm
    Subwoofer Measurements
    Displacement (Inches)
    0.28cu.ft.
    Depth (Inches)
    15"
    Cutout (Inches)
    16.69"
    Motor Diameter (Inches)
    9.25"
    Ported Enclosure Specs
    Ported Enclosure Size
    7.00 cu ft
    Recommended Port Area
    112 sq in
    Recommended Port Tuning
    32 hz
    4th Order Enclosure Specs
    4th Order Sealed Side
    3.0cu ft
    4th Order Ported Side
    9.0cu ft
    4th Order Port Area
    180sq in
    4th Order Port Length
    8"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 95896848534

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J Miller
Bozeman, US
★★★★★ 5
Finally! A sunscreen that works and does not burn my eyes.
Style: SPF 30, Size: 3 Ounce (Pack of 1)
I am unable to use chemical or hybrid sunscreens on my face because they "melt" and destroy my eyes. Living in the south means daily sunscreen year-around is a must - having found this product is a godsend. Unscented, no chemicals to discolor my clothes, no titanium dioxide so no purple-white ghostly cast, easily rubs in. Simply perfect!!!
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Reviewed in the United States on June 8, 2025
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Amazon Customer
Whiting, US
★★★★★ 5
Effective Mineral Sun Protection
Style: SPF 30, Size: 3 Ounce (Pack of 1)
This mineral sunscreen does a great job at blocking the sun. It applies smoothly, although it does have a slightly pasty texture which is typical of mineral sunscreens. I love that it was on the thinner side for consistency which makes it easy to apply evenly. We used it extensively last summer and it kept us well protected. We'll definitely be using it again this summer!
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Reviewed in the United States on February 13, 2025
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Cher
Lowell, US
★★★★★ 4
good consistency
Style: SPF 30, Size: 3 Ounce (Pack of 1)
It is a body lotion and for that it's great but it's a bit white for face unless you are very fair. Not shiny which is a plus and goes on evenly.
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Reviewed in the United States on April 25, 2026
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Popstar888
Grantham, US
★★★★★ 5
This is the only sunscreen that doesn't give me an allergic reaction
Style: SPF 30, Size: 3 Ounce (Pack of 1)
I've tried many other sunscreens and all of them give me an allergic reaction, or they are very thick and leave a white residue. This, though, does neither of those things. It's just the right consistency. I've purchased this twice now and will purchase more in the future, I'm sure.
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Reviewed in the United States on December 7, 2025
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Tatiana Wright
Waukegan, US
★★★★★ 5
Best mineral sunscreen
Style: SPF 30, Size: 3 Ounce (Pack of 1)
Applies easily, smells great and hardly leaves a whitecast! One of my favorite mineral sunscreens that I’ve tried.
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Reviewed in the United States on June 17, 2024

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