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  1. Home
  2. Car Audio & Electronics
  3. Car Subwoofers
  4. Car Subwoofer Boxes
  5. Car Subwoofers with a Box (Loaded Sub Boxes)
  6. Ported Enclosure Boxes with Car Subwoofers
  7. NVX NE81P_UV18D2

NVX NE81P w/ Sundown Audio U-8 D2 8" (U8D2)

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo w/600W RMS 8" U Series Dual 2-ohm Car Subwoofer

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• 8" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .75 cubic feet
• Premium Black Carpet with Black NVX Logo

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List price $509.98
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$409.98

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Description

NVX brand icon

Authorized dealer

NVX NE81P

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo
Quantity: 1

Product Details:

  • Not compatible with NVX VC-Series Subwoofers
  • 8" Single Ported Subwoofer Enclosure
  • Made from 3/4" Medium Density Fiberboard (MDF) construction
  • Built with precision CNC technology for exceptional accuracy
  • Pre-lined with Poly-Fil for improved acoustic response
  • Premium Black Carpet with Black NVX Logo
  • Spring Loaded Push Terminals
  • Maximum subwoofer mounting depth: 8-5/8"
  • Subwoofer cutout diameter: 7-3/8"
  • Internal box volume: .75 cubic feet
  • Port Tuning Frequency (Fb): 38 Hz
  • Dimensions: 15.25" D x 15.00" W x 11.50" H
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Port Specifications:

  • Tuning Frequency: 38 Hz
  • Port Width: 1"
  • Port Height: 10"
  • Port Length: 21"

Sundown Audio U-8 D2 8" (U8D2)

1500W Peak (750 RMS) 8" U Series Dual 2-ohm Car Subwoofer (SW-UV18D2)
Quantity: 1

Product Details:

  • 8" Dual 2 ohm U Series Subwoofer
  • Power Handling:
    • Peak: 1500 watts
    • RMS: 750 watts
  • Pressed Paper Cone
  • Double-Stitched Surround
  • Optimized for small ported enclosures
  • Heavy-duty cast basket for added durability
  • Spring-loaded terminals accept up to 8-gauge wire
  • Stitched-on heavy-duty tinsel leads for easy connection
  • Solid pole with vent channels and aluminum shorting ring cap
  • Rear gap-venting and top cooling channels
  • 2.25" High Temperature Copper Voice coil
  • Aluminum voice coil former for superior heat dissipation
  • 18 mm Xmax
  • Double Stacked Ferrite magnet motor structure
  • Resonance Frequency (Fs): 39.387 Hz
  • Sensitivity: 81.6 dB
  • Recommended sealed box volume: 0.3 cubic feet
  • Recommended ported box volume: 0.65 cubic feet - 0.75 cubic feet
  • Top-mount depth: 6.02"
  • Cutout diameter: 7.3"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

    • Priced Individually

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Specifications & Details

Subwoofer Specifications
Series
U Series
Subwoofer Size
8"
RMS Power Handling
600 watts
Sensitivity
81.6 dB
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Ported
Number of Subwoofers
1
Box Style/Shape
Square/Rectangle
Wood Thickness
3/4"
Number of Terminals
1
Terminal Type
Binding posts (banana clip ready)
Box Exterior Color
Black
Box Finish
Carpet
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details

Manufacturer:

NVX

Model Number:

NE81P_UV18D2

Weight:

50.00lbs

Internal SKU:

ne81p_uv18d2

Internal Product ID:

228863

Customer Ratings & Reviews

NVX NE81P w/ Sundown Audio U-8 D2 8
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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