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Dual 8" 1,400 Watt SDR Series Loaded Vented Subwoofer Enclosure | SDR-2X8D4


Skar Audio introduces the SDR-2X8D4 dual 8-inch loaded vented subwoofer enclosure to cater to the audiophile who wants a competition grade system in their vehicle without all of the headache involved with designing it from the ground up.


This loaded enclosure features two of our extremely popular SDR-8 D4 700 watt max power subwoofers which combined come in at 1,400 watts max power for the pair. The custom designed enclosure paired with these subwoofers features a unique kerf middle port and split chamber woofer design, allowing for extreme levels of bass output. Furthermore, the enclosure is finished in premium black carpet for a sleek appearance and features the Skar Audio logo in white on the top surface of the box. This enclosure was engineered by Skar Audio specifically for the subwoofers that are loaded in it, ensuring perfect sound and compatibility.


The subwoofers comes pre-wired and loaded inside of the enclosure allowing for an easy and hassle free installation. The Dual 4-ohm drivers are wired up inside of the enclosure so that the final impedance load is configured for 1-ohm at the terminals (one terminal cup). Peak Power: 1,400 Watts, RMS Power: 700 Watts.


Subwoofer Specifications

  • Includes (2) SDR-8 D4 8" Dual 4-ohm Subwoofers
  • Pre-loaded and Wired Up Inside the Included Ported Enclosure
  • Final Impedance Load at Enclosure Terminals: 1 Ohm
  • Coil Configuration: Dual 4 Ohm
  • Peak Power: 1,400 Watts (pair) | 700 Watts (each)
  • RMS Power: 700 Watts (pair) | 350 Watts (each)
  • Competition Grade Pressed Paper Cone
  • High Roll Foam Surround
  • Advanced Air Flow Cooling System
  • 2" High Temperature Copper Voice Coil
  • Motor Weight: 49 oz
  • Frequency Response: 30 - 350 Hz
  • Sensitivity: 83.7 dB
  • Fs: 39 Hz
  • Re: 3.2 Ohms
  • Qts: 0.61
  • Qms: 5.1
  • Qes: 0.68
  • Bl: 7.35 n/a
  • Vas: 6.98 L
  • Xmax: 8.8 mm

Enclosure Specifications

  • Dual 8-Inch Vented (Ported) Subwoofer Enclosure
  • Custom Engineered Skar Audio Enclosure specifically Designed for use with the Skar Audio SDR-8 D4 (x2) Subwoofers
  • "Wedge" Style Enclosure with Vented Design allows for Extreme Low End Bass Output Levels and Responsiveness
  • Wood Thickness & Material: 5/8" MDF
  • Front Baffle Thickness: 1.25"
  • (Double Baffle - Countersunk Design for a Smooth, Flush, Subwoofer Appearance)
  • Finish: Black Colored Carpet with Skar Audio logo in White on Top of Enclosure
  • Premium Push Terminals Located on Left Side of Enclosure (one terminal cup only - woofers are wired internally to reach a 1-ohm final load)
  • Internal Air Space of Enclosure: 1.95 ft³
  • Tuning Frequency of Enclosure: 37 Hz
  • Box Outer Dimensions:
  • Width: 25.75"
  • Depth #1: 16.25" (Bottom Depth)
  • Depth #2: 14.25" (Top Depth)
  • Height: 12.00"

Customer Reviews

Based on 7 reviews
Great product!

I love them. Breaking them in still need to upgrade a few things. Bought skar before in previous vehicles. Keep up the great work!

SDR-8's Slam!!!!

These 8" skar subwoofers hit really hard, with the RP-800.1D. I have them in my 2015 FRS and it puts out the bass. Skar audio has some pretty damn good products, and I will buy more in the future.


Great hard hitting subs!! Worth the money


Im very happy with my selections

Dual 8

Still breaking them in but they Work very well with the rp1500. Very affordable even without the discount. I’d definitely recommend them to anyone who is looking for a small but loud setup.

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