Search  for anything...
Sundown Audio

Sundown Audio SA-8 V.3 D4 8" 500W RMS Dual 4-Ohm SA Series Subwoofer

  • Based on 126 reviews
Condition: New
Checking for the best price...
$299.00 Why this price?
Save $0.99 was $299.99

Buy Now, Pay Later

As low as $49.83 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Jun 10
Order within 3 hours and 1 minute
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • SA-8 V.3- Sundown Audio 8 inch 500W RMS Dual 4-OhmSeries Subwoofer
  • Specifications:Resistance (Re): 6.0 & 3A9; | Resonance Frequency (Fs): 40.0| Equivalent Volume (Vas): 7.17 L | Electrical Q Factor (Qes): 0.392 | Mechanical Q Factor (Qms): 4.310 | Total Q Factor (Qts): 0.360 | Force Factor (BL): 22.06| Moving Mass (incl. Air Load) (Mms): 126.6 g | Suspension Compliance (Cms): 125 & 3BC;m/N | Sensitivity: 82.711w / 1m
  • Box Recommendations: Sealed Enclosure Suggestion: Not Recommended | Ported Enclosure Suggestion: 0.5 - 0.75 cu. ft.
  • Hz | Displacement: 0.08 cu. ft. | Depth: 6.625|Outside Diameter: 8.375| Cutout: 7.375 in

Brand: Sundown Audio


Speaker Maximum Output Power: 500 Watts


Frequency Response: 40 Hz


Connectivity Technology: wired


Audio Output Mode: Surround


Audio Output Mode: Surround


Mounting Type: Flush Mount


Enclosure Material: Aluminum


Speaker Type: Subwoofer


Additional Features: Bass Boost


Antenna Location: Volume


Subwoofer Diameter: 8 Inches


Color: Silver


Is Waterproof: FALSE


Warranty Type: Limited


Control Method: Remote


Speaker Size: 8 Inches


Woofer Diameter: 8 Inches


Tweeter Diameter: 1 Inches


Water Resistance Level: Not Water Resistant


Specific Uses For Product: Audio enhancement in home theater, automobile, and music systems


Processor Count: 2


MP3 player: No


Controller Type: Remote Control


Total USB 2.0 Ports: 2


Unit Count: 1 Count


Item Dimensions D x W x H: 8.38"D x 6.62"W x 8.38"H


Compatible Devices: Smartphone, Tablet, MP3 Player


Compatible with Vehicle Type: Car


Power Source: Corded Electric


Brand: Sundown Audio


Model Number: SA-8 V.3 D4


Model Name: SA-8 V.3 D4


Built-In Media: Sticker, Subwoofer, Warranty Card


Number of Items: 1


Series Number: 3


UPC: 762108940137


Global Trade Identification Number: 37


Manufacturer: Sundown Audio


Age Range Description: Adult


Speaker Maximum Output Power: 500 Watts


Input Voltage: 8 Volts


Number of Power Levels: 1


Frequency Response: 40 Hz


Number of Audio Channels: 3.0


Impedance: 6 Ohms


Connectivity Technology: wired


Wireless Technology: Bluetooth


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: Wired


Audio Driver Type: Dynamic Driver


Audio Driver Size: 8 Inches


Number Of Circuits: 1


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Sound quality đź‘Ś
Good bang for the buck, hits strong with the proper tune and box fitment is great with the box I've chosen
Reviewed in the United States on December 12, 2025 by Abrum
    • Only 8”s
Being a fan of bass, especially loud bass I was not expecting too much from these little guys. The build quality is awesome. For only being 8” subwoofers these are heavier than a lot of 12” subwoofers on the market. I installed two of these Sundowns in a front firing ported box about 1cuft per subwoofer underneath my rear seat in my crew cab Sierra. I powered the subs with a 1500.1 Memphis audio class D Monoblock amplifier. The amp being 1ohm stable I wired the subs parallel/ parallel to 1ohm. I have the gain set to about 3/4 and these speakers are taking the 500rms that they claim with no problem. The speakers can be punchy like a set of 10’s or hit that extremely low bass like 15’s. If you are on the fence about buying these subwoofers don’t be. For the money you can’t beat it. I normally use JL Audio subwoofers but these have met and exceeded my expectations. Just make sure you know what your amp is stable at and buy the right ohm speakers and know how to wire them to meet the criteria of your amp and you’ll be extremely pleased. ... show more
Reviewed in the United States on February 20, 2021 by Amazon Customer
    • Great sound. Perfect for any music and it will hit hard if U want it to
Review Image by Wesley D. Wesley D.
Review Image by Wesley D. Wesley D.
Ok... I researched subs for 3 months trying to decide. I was stuck on Rockford fosgate bc they do have great sound. But then I heard about this little 8”. Ha. Well it ain’t so little. I couldn’t believe how much it weighed. I had a Memphis 12” and this 8” v3 hits lows harder than the Memphis 12” did. The sound quality of this sub is perfect. I only bought one but it’s plenty!! I listen to mostly rap. I paired it with the Rockford prime 500 which actually the birth sheet said 625 watts. Update... I’ve had this about 7 months now. My friends still can’t believe i only have one 8” sub.. I didn’t realize they can hear me coming up the road. I’m still very pleased with this purchase. The fosgate amp is great too. Never gets hot. Perfect for this sub. If u get this sub go ahead and get the LAB slapbox for $149. It’s made just for this sub. U won’t be disappointed. If ur gonna buy it at least make it sound like it’s supposed to. box is important 👍🏼 ... show more
Reviewed in the United States on February 12, 2019 by Wesley D. Wesley D.
    • One year update
Very powerful and held up to constant use. Very heavy keep in mind mounting or maneuvering it.
Reviewed in the United States on February 20, 2025 by David
    • Incredible
I got this installed at a shop nearby my location and within hours I had a single 8" subwoofer rattling the bones of the people in my backseat. It was great until I overpowered it and potentially ruined the integrity of the composition. I regret the decision I made but for the short time I was able to experience what it could offer me was beyond what words can describe. Shoutout to the guy who suggested the LAB slapbox for this specific subwoofer man you know how to choose the right one. Overall experience 10/10 I'd ruin it again. ... show more
Reviewed in the United States on March 23, 2022 by Jaycob Stewart
    • First let me say i have never paid this much ...
First let me say i have never paid this much for a sub!! I am a little frugal However, this Sub is worth every penny... I had A 10" Skar in a ported box i thought it was the bomb. This little 8" by far is a beast and out preforms that 10 & a couple 12" subs iv owned. Sometimes i cant believe thats a single 8" rattling my windows & mirrors. Will say this, get a factory spec box, makes all the difference. I have a 500w Jbl amp pushing it. This 8 could probably take more but i cant. ... show more
Reviewed in the United States on July 2, 2018 by Wayne
    • Great Speaker- The Only Thing The Prevented Me From Giving It 5 Stars Is The Price. It is too expensive
Great Speaker. This little giant can go. I have just one in a box and it really put out. My friends thought I had two ten inch speakers
Reviewed in the United States on November 17, 2016 by Fabulous P.
    • More Bang for your buck
The subwoofers performs flawlesplay it is great and I love the sound that comes out of it it makes my car stereo sound awesome and everybody says man what is that and I tell them and they go wow nice
Reviewed in the United States on January 4, 2023 by Roger

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...