SDR-8 | 8" 700 Watt Max Power Car Subwoofer

169 Reviews

Current Price:$74.99
Sale Price:


Coil Configuration
The Skar Audio SDR-8 D2 subwoofer was designed to redefine the term "daily" subwoofer, both in terms of power output and acoustic responsiveness across the entire low end frequency range. The engineering considerations that went into developing this 8-inch subwoofer are extensive, and contribute to why the SDR series has continued to be one of the most popular subwoofer lines we have ever released.
Featuring a 2.5" 4-layer high temperature copper voice coil, the SDR-8 can operate at peak performance for hours on end with the peace of mind knowing that it can handle the brutality. Combine that with the top-tier, high flux ferrite motor of this driver, and it is by no surprise that this subwoofer can reproduce low end bass frequencies with authority. Furthermore, we integrated a unique red nomex spider suspension system into the design that utilizes the perfect blend of stiffness and flexibility. The aforementioned components of the SDR-8 as well as its advanced air flow cooling design, are what ultimately allow for the incredible responsiveness & power handling of this subwoofer.
Product Info
SDR-8 D2
General Specifications
Car Subwoofer
Cone Type
Competition Grade Pressed Paper Cone
RMS Power
350 Watts
Peak Power
700 Watts
Surround Type
High Roll Foam Surround
Subwoofer Size
Voice Coil Size
Magnet Slug Count
Voice Coil Layers
Voice Coil Material
Copper (Pure Copper)
Voice Coil Impedance
Dual 2 Ω
T/S Parameters
14.25 n/a
39 Hz
Dual 2 Ω
201.0 cm2
0.122 mm/N
89.2 gr
7.0 L
8.8 mm (one-way)
83.8 dB
Recommended Enclosure Specifications
Enclosure Disclaimer
Enclosure recommendations above do not include subwoofer, bracing, and port displacement
Recommended Port Area
10.5 in²
Recommended Ported Volume
0.75 - 1.00 ft³
Recommended Sealed Volume
0.55 - 0.75 ft³
Recommended Tuning Frequency
39 Hz

Subwoofer Measurements
Total Height
Mounting Depth
Magnet Diameter
Cut-out Diameter
Outside Diameter

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Customer Reviews


Based on 169 reviews

  • The Combo Pack Sucks
    Reviewed on 7/30/2021 by David
    I got the 8s combo pack with amp and wiring kit these 8s suck i warranty one out and now another one is not working i get my stuff installed at best buy and after taking everything
  • Just Installed
    Reviewed on 7/13/2021 by Aaron
    Verified Buyer
    Just got it in the box I made first sub and first time having a box lol but looks good I think can’t wait to hear it
  • 8 Inch Subs That Act Like 12s!
    Reviewed on 6/1/2020 by Jamison
    Verified Buyer
    These little speakers pack some punch. I bought four for my F150. Built a box with approximately .7 cubic ft of airspace per speaker, sealed. I'm running them with two 500 watt rm
  • Great Subs For The Price
    Reviewed on 3/17/2022 by Robert
    Verified Buyer
    Originally I bought 2 for my sons Jeep. So I ordered 4 ohm subs. Well I couldn’t get 3 zvx 8s for my truck box, so I thought I’d just buy a 3rd sdr 8. Well I didn’t want to blow th
  • Absolutley Impressed
    Reviewed on 4/23/2021 by Nate
    Verified Buyer
    Seriously speachless for how hard these 4 8's hit in a custome box made by me and they arent even broke in just yet. Im running these 4 sdr 8's dual 4ohm wired to just 2 ohms per s
  • Really Good Bang For Your Money!
    Reviewed on 6/25/2020 by Madison
    Verified Buyer
    Awesome subs , they sound very good for there size and series. Still can’t wait to hear them broken in ... I have two 8”s and a 1200 class D mono amp and they’re awesome... by the
  • Hit Hard!
    Reviewed on 6/8/2022 by Robert
    These things are amazing! Can’t ask for better for the money.
  • Used In Skar Tube
    Reviewed on 4/12/2022 by Art
    Verified Buyer
    I used this sub in the Skar tube setup I picked up last year. I am very impressed with how good it sounds. Skar should have originally used this sub in their tube setup. This sub w
  • Sdr-8
    Reviewed on 6/27/2021 by Matthew
    Verified Buyer
    Well built , sounds good. Good bang for the buck.
  • Big Bass In A Small Package
    Reviewed on 5/29/2021 by AJ
    I was pleasantly surprised by these little things. I put them in 2 invidual boxes i had sitting around the house just to use until i build a box and SHEESH. I put them on a RP-1500
  • All I Can Say Is.....
    Reviewed on 5/25/2021 by Steve
    Verified Buyer
    I was a car audio tech for 10 years(2000-10) and all I can say is how impressed I am with these subs! I ordered 4 of the sdr-8's and built a box to fit under the rear seat in a 08
  • Skar Audio Is Doin That Deal!!!
    Reviewed on 3/23/2021 by Richard
    Verified Buyer
    Currently running 2 of the sdr 8”s along with one sdr10” behind the back seat of my crew cab. Sounds awesome! Just ordered an evl 10 yesterday. Very impressed with Skar audio!!
  • It's Lit
    Reviewed on 11/28/2020 by Nickey
    Verified Buyer
    Purchased this sdr 8 to use as the 5th sdr 8 for my build in the coupe!!! Works great and sounds good!!! Just ordered some more stuff from skar so we can go CRAZY with it!!!
  • Awesome Little Beast
    Reviewed on 9/27/2020 by Shawn
    Verified Buyer
    Was skeptical when purchasing, but was surprised by the output of this little sub.installed in place of the factory sub in my 2020 hyundai elantra. 2 thumbs up.
  • Now That's An Amazing Sub For The Price
    Reviewed on 2/20/2019 by sean
    With the size of this little sub, it hits super low share gives my little 400-watt class D amp a workout. Deffently impressed.
  • Null
    Reviewed on 5/2/2022 by Irving
    Verified Buyer
    a subwoofer did not work
  • Great Bang For The Buck!
    Reviewed on 1/25/2022 by Greg
    Verified Buyer
    Got 6 of them in my Smart car I use to commute.
  • Garage Bass
    Reviewed on 5/26/2021 by James
    Very good quality, good bass def recommended!!!