Search  for anything...

SA-12 D4 REV.3 - Sundown Audio 12" 750W Dual 4-Ohm SA Series Subwoofer

  • Based on 252 reviews
Condition: New
Checking for the best price...
$339.99 Why this price?

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit
  • – 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

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: In Stock.
Fulfilled by WoofersEtc

Arrives Saturday, Nov 1
Order within 3 hours and 32 minutes
Available payment plans shown during checkout

Brand: Sundown Audio


Speaker Maximum Output Power: 600 Watts


Connectivity Technology: wired


Audio Output Mode: Stereo


Mounting Type: Top Mount


Is Discontinued By Manufacturer ‏ : ‎ No


Package Dimensions ‏ : ‎ 15.1 x 14.8 x 11.2 inches; 29.6 Pounds


Item model number ‏ : ‎ SA CLASSIC-12-D4


Date First Available ‏ : ‎ August 17, 2010


Manufacturer ‏ : ‎ Sundown Audio


Customer Reviews: 4.5 4.5 out of 5 stars 252 ratings


Model Name: ‎SD-CLASSIC-12-D4


Speaker Type: ‎Subwoofer


Compatible Devices: ‎Laptop, Smartphone


Subwoofer Diameter: ‎12 Inches


Unit Count: ‎1 Count


Controller Type: ‎Corded Electric


Surround Sound Channel Configuration: ‎3.0


Included Components: ‎Subwoofer only


Item Weight: ‎13.43 Kilograms


Impedance: ‎4 Ohm


Is Waterproof: ‎FALSE


Warranty Type: ‎Limited


Number of Items: ‎1


Control Method: ‎Voice


Speaker Size: ‎12 Inches


Power Source: ‎Corded Electric


Woofer Diameter: ‎12 Inches


Vehicle Service Type: ‎Car


Audio Driver Type: ‎Dynamic Driver


Audio Driver Size: ‎12 Inches


Subwoofer Connectivity Technology: ‎Wired


Connectivity Protocol: ‎wired


Includes MP3 player?: ‎No


Number Of Circuits: ‎1


Processor Count: ‎1


UPC: ‎658584626354


Global Trade Identification Number: ‎54


Manufacturer: ‎Sundown Audio


Item Weight: ‎29.5 pounds


Package Dimensions: ‎15.1 x 14.8 x 11.2 inches


Item model number: ‎SA CLASSIC-12-D4


Is Discontinued By Manufacturer: ‎No


Wireless Remote: ‎No


Date First Available: August 17, 2010


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 1

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.

Top Amazon Reviews


  • B o o m
Incredible. Before I give the details of the sound I will mention that I have my Big 3 and a HO alternator. Originally I had the SA 18 a couple years back. Due to personal reason I had to sell it. That was my first Sundown sub and it made me a fan for life. Unfortunately I downsized vehicles so I couldn't fit an 18 when I was back in the market for one. I decided to go with one 12 to save space. While the SA 12 is not as loud as the SA 18, it does sound more accurate and cleaner. This sub sounded great before my Big 3 and HO alternator, and sounds even better with them. I bought a prefabbed enclosure here from Amazon, (MSW Enclosures) @ 2.0 Cu. Ft. @ 32hz. I have an Infinity K.1000 powering it and this little monster hits amazing. The lows flex my car like no other. Though most people say this subwoofer is for SPL I would have to disagree. I'm a fan of most genres and it never disappoints on the performance. I've noticed a little more output since I've been playing it more, but I wouldn't be scared to push these hard right out of the box. Don't cheap out on your amp and box, and you'll be plenty satisfied. This is a great subwoofer and I can't wait to add a second one. ... show more
Reviewed in the United States on April 12, 2018 by jlknoir

  • 12” Sundown Audio speaker the best
Order went smoothly, shipped and delivered in a timely manner, and the speaker is very good quality. I have the 12” sundown audio 750 watts hooked up to a Memphis 750 and it sounds good
Reviewed in the United States on April 22, 2025 by Andre J. Hill

  • Great bang for the buck
Great sub, only running about 450W to it right now and it hits very very hard, very clear. Looks well built, and it's HEAVY. Bass got louder/deeper after using for a few weeks. I see a lot of people running these at 1100W daily with no issues, they can take a beating. I've had kicker / alpine / few other brands and this Sundown hands down is the best in the price range. EDIT: Had to send my sub in for repair. Customer support from the seller WoofersInc and Sundown themselves was very fast, process was easy and support was very helpful. Cause of an unwound voice coil was most likely distortion. Please tune your amp/head unit properly! ... show more
Reviewed in the United States on May 8, 2018 by Drew

  • You only need one of these!!!
This sub is amazing! i bought two of these but only needed one as one of these subs gets so loud !! its louder than my old setup which was 2 12's earthquake DBXI and i thought i had good subs lol i was wrong when i got these holy hell i was so impressed with only one! i dont even know how you would wanna listen to two of these lol it kills the lows like no other! i play 28-35hz like crazy , shakes my car so much i cant believe all that flex with only 1 sub! what would happen if i put two lol really really good sub! i am only putting 1000w rms and it takes it like nothing, sundown audio did an awesome job with this sub , i am gone crazy about this sub, it also sounds really good on loud volumes and the lows are the best thing about this sub!!!!!! I LOVE IT!!!!!!!! ... show more
Reviewed in the United States on April 6, 2013 by Neez

  • not bad
not bad when you run a ported box with a nice amp.. some nice clean tight bass makes everything rattle and shake
Reviewed in the United States on June 18, 2013 by Danny

  • WOW!
So first off this thing is quite heavy weighing in around 30 lbs. I was at best buy looking at subs earlier today and picked up some kickers and polk audio subs and they were less than half the weight of one of these bad boys. I have this paired with a prefab box (A custom box would sound even better) and the box is 1.85 cu ft (not including the .14 cu ft the sub itself takes up so its about 1.71 cu ft) and it's tuned to 38 hertz. Sundown recommends somewhere around 33 and 35 hertz for tuning and up to about 2 cu ft for a ported box. So i'm not quite using the specs I want, but the subs make up for that. A friend of mine was using 2 old sony xplod subs in a ported box blah blah blah maxing out their power etc. I thought her bass was "loud" (coming from someone with no experience) but I just have 1 of these 12" subs which btw weighs more than both her subs combined (huge magnet on this thing). Together the box and sub weigh around 70 lbs which was a bit heavier than I anticipated, but I love the raw weight of it alone. Enough rambling, now to the good stuff. I've read around and it seems that the 600rms is way underrated. I have a cheap (but powerful) amp pushing around 850 clean rms with this sub wired in parallel down to 2 ohms. I went for a test drive in the country after a quick and easy tuning of my amp when the song played my jaw dropped. I wish I could rate this higher than a 5/5. It has definitely exceeded my expectations. I still need to retune the amp to make it a perfect match with this sub, but even with a quick tune this thing gets loud. for 200 bucks I doubt you could beat it especially if put in the right box with a more powerful amp. I can't wait to "surprise" a friend of mine (has no idea i installed an audio system) with this bad boy. Even at a fraction of the power this thing can bump. I personally don't want to wake everyone up nearby, but if you want to be heard 3+ blocks away, then get this sub, it will not disappoint. ... show more
Reviewed in the United States on August 31, 2013 by Jonah Mack

  • Pick another speaker manufacturer
Damaged upon arrival cannot get in contact with Sundown this is been going on 7 months false
Reviewed in the United States on January 17, 2021 by Thomas Brown

  • Ver impressed
I've only had this sub for a couple days and so far I'm impressed. I've been into car audio for awhile now, about 18 yrs. I've had fosgate, orion, polk, and even had two of the all mighty JL 12w6v2's with two slash 500/1 amps. With the combination of bang for the buck, small enclosure requirement, spl, and sq this sub beats them all. I needed something that could operate in a small sealed enclosure so i was nervous that I wouldn't get too much sound out of anything this inexpensive. This turns out to be louder than the 12w6 and just as clean sounding. If I had the space I would have done a slightly bigger box though. Its in a 1 cubic ft box before you take the speaker displacement into account. I do feel a drop off around 35 hz that may not be there if the box were bigger. But still sounds great anyway. I'm running it with an Alpine mrx-m110 pushing 1157 watts into two ohms with an audiocontrol lc2i loc, and the sub handles it without a problem. Hats off to sundown audio. ... show more
Reviewed in the United States on June 15, 2014 by Ralph

Can't find a product?

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