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Description
Sundown Audio - M-Series M12"2000 Watts RMS 4000 Watts Peak Available in Dual 1 and Dual 2 Ohm Configurations Mega Roll Surround and Frame Etched All Black Backplate Quad Stack Magnet Structure The Sundown M Series is an all new "entry level" subwoofer in our Mega series all Mega series subwoofers (10,12,15,18) feature our custom tooled and patented frames (US Patent Numbers D691596, D691597, D691598, and D741841) and our Mega Roll surround. When we say "entry level" this is only
- 2000 Watts RMS / 4000 Watts Peak
- Available in Dual 1 and Dual 2 Ohm Configurations
- Mega Roll Surround and Frame
- Etched All Black Backplate
- Quad Stack Magnet Structure
The Sundown M-Series is an all-new "entry-level" subwoofer in our Mega series - all Mega series subwoofers (10,12,15,18) feature our custom tooled and patented frames (US Patent Numbers D691596, D691597, D691598, and D741841) and our Mega-Roll surround.
When we say "entry-level" this is only by comparison to its big brothers in our own Mega line - X,Z,NS series and higher. The M series was built for intense bass with stellar low-frequency performance at industry-leading levels of low-distortion. It does this while looking amazing - with a new laser-etched back-plate design and special M-series magnet boot design.
When we say "entry-level" this is only by comparison to its big brothers in our own Mega line - X,Z,NS series and higher. The M series was built for intense bass with stellar low-frequency performance at industry-leading levels of low-distortion. It does this while looking amazing - with a new laser-etched back-plate design and special M-series magnet boot design.
For the M-series we mate out Mega series frames to a quad stacked 200mm (7.87β) diameter motor structure with a total magnet stack height of 88mm (3.46β) featuring a hyper-extended pole and extreme clearances (allowing 59.5mm to mechanical bottom effectively making it bottomless - this is 4.68" peak-to-peak). At Sundown we always do things to the extreme so even our "entry" level M-series features a full 20mm thick top-plate to finish the efficient magnetic circuit. We did all of this while still optimizing the cost to offer the absolute best-value to our customers.
This motor drives a 3" diameter 4-Layer Round Wire Aluminum Voice Coil wound on a thick aluminum former to incredible levels of excursion. The new coil in the M-series was developed for both the M and X v.4 series and features a very special winding (invented by Sundown for the X-8 series originally) that allows the best winding packing density in the gap for both the D1 and D2 options. This coil is so massive that it allows even our M-series to achieve a full 35mm one-way linear excursion. We are truly setting a new industry standard with the M-series.
Based on Sundown's years of experience we've included our highly efficient high-stroke coil ventilation system developed for the X and Z series originally. The M-series features a high-velocity pole vent, a heavily vented magnetic gap through the back-plate, and our proprietary high-velocity cast-aluminum frame-base venting system.
The M-series was designed from the ground-up to become the new standard in the low-frequency / small, ported box subwoofer category in this price range. Never before have we been able to offer such an incredible value in the Mega series. They will work in the same enclosure as our other Mega platform subwoofers, but the M-series also opens up the possibility for sealed and IB applications. This is something that was not well suited to any other previous Mega platform subwoofer.
The M-series is really a different kind of woofer due to its incredibly linear suspension. They are designed for the LOWEST level of bass extension possible in aΒ small enclosure while maintaining extremely low levels of distortion. This is all thanks to the Sundown Mega-Roll surround & proprietary Sundown PG linear suspension (fully computer optimized). As with most subwoofers from Sundown the M-series features a magnet inner-diameter aluminum shorting ring for superior inductive distortion performance as well.
We are quite certain that the M-series will go down in car audio history as one of the best low-distortion subwoofers per-dollar of its time.
We are quite certain that the M-series will go down in car audio history as one of the best low-distortion subwoofers per-dollar of its time.
Specifications
| RE (Ohms) | 2.22 | 4.0669 |
| FS (Hz) | 31.931 | 32.714 |
| VAS (L) | 39.313 | 15.06 |
| Qes | 0.696 | 0.686 |
| Qms | 4.654 | 4.768 |
| Qts | 0.606 | 0.6 |
| Le (mH) | 1.946 | 3.641 |
| BL (NA) | 17.484 | 23.84 |
| Mms (Grams) | 477.932 | 466.6312 |
| Cms (uM/N) | 51.979 | 50.725 |
| Sens (dB @ 1w/1m) | 84.387 | 80.6 |
| Xmax | 35mm | 35mm |
| T/S SPECS | M12D1 | M12D2 |
|---|
Enclosure Specifications
| Sealed Enclosure | Not Recommended |
| Ported Enclosure | 2.5 cu ft |
| Recommended Tuning | 32Hz |
| Recommended Port Area | 40 sq in |
| 4th Order Sealed Side | 1.0 cu ft |
| 4th Order Ported Side | 3.0 cu ft |
| 4th Order Port Area | 60 sq in |
| 4th Order Port Length | 8" |
| Displacement | 0.21 cu ft |
| Depth | 10.88β³ |
| Outside Diameter | 12.67β³ |
| Cut-Out | 11.09β³ |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Product Reviews
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5
Buy it! Lifesaver!
Size: 16oz
Yes, buy it when you don't have a spare tire because you will need it!
I live in Florida and flat tires are just part of living here!
Saved my life twice already and is absolutely self explaining!
Cheaper then a spare tire, lighter than one too! Just throw it in your trunk and best case you will never need it but just in case!
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Reviewed in the United States on May 23, 2026
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1
Difficult to use and eventually hose end broke
Size: 24oz, Size: 24oz
I purchased this can of Fix-A-Flat to fix, what I believe, is a rim leak on my truck tire which needs to be filled once every week or so. When I attempted to use the product I let some air out of the tire (down to 25 psi) so it would be easier to dispense the contents. The instructions on the can say to have the valve on the tire at the 6 o'clock...which I did as well.
When I attempted to make the connection using the swivel connector on the can's hose it was difficult. The hose on the can is very short and stiff and because it came coiled in the can's lid, did not want to straighten out making connecting it to the tire a very awkward process. It was hard to screw the hose end on the valve without it binding so it felt like it was cross-threading. I have machined aluminum valve caps and they go one very easily so I know the threads on the tire's valve stem are clean.
I finally did get it on and when I attempted to dispense the contents it filled the hose but that was about it. I could not see any contents flowing thru the hose at all. I assumed it was not on far enough so I took it off to try again and the contents sprayed everywhere showing it was indeed under pressure....just not going into the tire. After multiple tries the hose end eventually just broke off and stayed on the tire's valve stem. I was able to get it off, but at this point the can is useless to me.
Obviously I cannot and will not recommend this product. I have used this product before and had success, but that was when the hose was longer and wired to the side of the can making it much easier to use, versus how they are shipped now. I would recommend going with another product or possible going to a box store (which is what I plan to do) to find one that does not have this design. At the very least, if you do choose to disregard this review, I would try it with the tire's valve stem at the 3 or 9 o'clock position which might make it easier to thread the hose end on to the valve stem,.
Also, if you choose to go this route you might just be throwing your money away. I attempted to get a refund from Amazon and was directed to the manufacture's web site. From there you are directed to use the 800 number of leave a general message that is in no way connected to your Amazon purchase. Past experience tells me it will not be an easy process so it looks like I am out the $12.
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Reviewed in the United States on March 10, 2024
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5
This is a necessity for anyone that tries a car!!
Size: 20oz 6pk
I havenβt used this yet, but I bought a case to give to my family members. My friend who came outside to a flat tire. It was a Sunday in Utah so there was really no one that could fix it. Walmart told her to get this product. She had to drive home immediately following using this product (300 miles) It has been over two months now and my niece is still driving on that tire. It was a brand new tire that was costly so she decided to just wait and see how long this product will work. Great gift for anyone in the family that drives. This does not work on a blown tire. If you wake up in the morning and your tire is flat, or you get out of class and your tire is flat, just use this product and no calls need to be made.
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Reviewed in the United States on October 14, 2025
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5
Great product and great service
Size: 16oz
By all accounts it's a great product! It arrived and I feel more confident having it with me in the car.
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Reviewed in the United States on April 28, 2026
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5
Essential Emergency Kit That Every Vehicle Should Have
After experiencing a flat tire on a remote highway late at night, I realized how unprepared I was for roadside emergencies. That experience led me to purchase the AUTOWN Flat Tire Repair Kit, and I'm incredibly grateful to now have this comprehensive solution in my vehicle. This kit has already saved me twice from having to call for expensive roadside assistance, and the peace of mind it provides is absolutely priceless.
The 31-piece kit is impressively complete. It includes everything you need to handle a flat tire emergency, from the tire plugs themselves to insertion tools, rasps, and even extras that many cheaper kits omit. The variety of plug sizes means you can handle different types of punctures, and having multiple plugs means you're prepared for more than one emergency before needing to restock.
What sets this kit apart is the quality of the tools. The T-handle insertion tool feels solid and well-made, not like the flimsy plastic tools that come with some budget kits. The reamer tool cuts through damaged rubber cleanly and efficiently, making it easy to prepare the puncture hole for the plug. Having used cheaper tire repair kits in the past that broke during use, I really appreciate the durability and reliability of these tools.
The storage case is another thoughtful feature that makes this kit practical for vehicle storage. Everything fits neatly in the organized case with dedicated spaces for each component, which means you can quickly find what you need during an emergency. The case is compact enough to fit in a glove box or under a seat, but it's also rugged enough to withstand being rattled around in a trunk without falling apart.
Using this kit is surprisingly straightforward, even for someone without extensive automotive experience. The process involves identifying the puncture, using the reamer to prepare the hole, inserting the plug with the T-handle tool, and trimming the excess. I was able to successfully repair a puncture on my first attempt following the basic instructions, and the repair has held perfectly for months of daily driving.
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Reviewed in the United States on February 2, 2026