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Sundown Audio U-8 D4 8" (U8D4)

1500W Peak (750 RMS) 8" U Series Dual 2-ohm Car Subwoofer (SW-UV18D4)

Sundown Audio
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• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 4 ohm
• Pressed Paper Cone
• Double-Stitched Surround
• Mount depth: 6.02"
• Sensitivity: 81.6 dB

Learn more about the uv18d4
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List price $419.99
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$349.99

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Current Promotions (1 offer)


Get a Free roll of Belva 16 Gauge Speaker Wire. Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

Sundown Audio U-8 D4 8" (U8D4)

100% off


Priced separately $362 98

Promo Savings of $12 99

Total price:

$349 99

Description


Sundown Audio brand icon

Authorized dealer


Sundown Audio U-8 D4

The U Series woofer from Sundown is incredibly versatile, thriving in both competition setups and your daily driver. It features a double-stacked 9” wide ferrite magnet system and a robust top plate. It also incorporates shorting rings within the magnets and pole cap to enhance frequency response, act as a heat sink, and guide airflow. The U Series is equipped with a significantly thicker custom aluminum frame that boasts heat-dissipation ribs. The motor also includes an extended pole piece to ensure the coil remains controlled even under high stress!


Product Details:

  • 8" Dual 4 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): 41.288 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

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Sundown Audio U-8 D4 8" (U8D4) Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Sundown Audio U-8 D4 8" (U8D4) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Sundown Audio U-8 D4 8" (U8D4) Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Sundown Audio U-8 D4 8" (U8D4) Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


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Specifications & Details


Subwoofer Specifications
Series
U Series
Subwoofer Size
8"
Peak Power Handling
1500 watts
RMS Power Handling
750 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Voice Coil Material
Copper
Voice Coil Diameter
2.25"
Sensitivity
81.6 dB
Xmax (millimeters)
18 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Pressed Paper
Woofer Surround
Double-Stitched
Magnet Structure
Double Stacked
Magnet Type
Ferrite
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
0.3 cubic feet
Minimum Ported Box Volume
0.65 cubic feet
Maximum Ported Box Volume
0.75 cubic feet
Top-Mount Depth (Mounting Depth)
6.02"
Cutout Diameter
7.3"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
41.288 Hz
Equivalent Compliance (Vas)
6.970 liters
Total Speaker Q Value (Qts)
0.431
Electrical Q Value (Qes)
0.519
Electrical Resistance of Voice Coil (Re)
6.34 ohm
Mechanical Q Value (Qms)
2.542
What is in the box?
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

U-8 D4

Weight:

25.00lbs

Internal SKU:

uv18d4

Internal Product ID:

206537

Customer Ratings & Reviews


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