Down4sound PRO-FAB 12 | 12 Sub Box | Single 12-Inch Ported Subwoofer Enclosure Box

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  • 12 Inch Ported Sub box Enclosure (1 - 12) Down4sound PRO-FAB 12
  • Single 12 Inch Ported Sub box Enclosure (1 - 12) Down4sound PRO-FAB 12
  • Single 12 Inch Ported Sub box Enclosure (1 - 12) Down4sound PRO-FAB 12
MSRP: $289.99
— You save $90.00


Single 12 Inch Ported Sub box Enclosure (1 - 12) Down4sound PRO-FAB 12

Get the most Powerful Bass available in a prefab 12-Inch Ported Sub Box. Upgrade your car audio system with the Single 12 Inch Ported Sub box Enclosure from Down4sound PRO-FAB. This high-quality subwoofer enclosure is specifically designed to accommodate a 12-inch subwoofer and get down low, providing powerful and clear bass for an amazing listening experience. The ported design of the enclosure allows for maximum airflow, resulting in optimized acoustics and enhanced bass response.

Durable and Stylish Design for Your Car Not only does the Single 12 Inch Ported Sub box Enclosure offer outstanding performance, but it also looks great in your car. The triple coated poly bedliner we use on the enclosure's rugged construction ensures durability and longevity, while the sleek and stylish design adds a touch of sophistication to your car's interior. You'll love the way it complements your vehicle's overall aesthetic.

Easy Installation and Use The Single 12 Inch Ported Sub box Enclosure is incredibly easy to install and use.With clear and straightforward instructions, even if you're not an expert in car audio, you'll be able to set it up quickly and easily. Once installed, you'll be able to enjoy powerful and clear bass from your favorite songs.

Single 12 Inch Ported Sub box Enclosure (1 - 12) Down4sound PRO-FAB 12 v1 Specifications:

  • 2.0 Cube Single 12" Enclosure
  • .75" MDF
  • 32Hz Tuning
  • Subwoofer cutout - 11 1/16"
  • Mounting Depth - 12.5"
  • Black Bedliner Finish
  • Plastic terminal Cup
  • Shipped in Double Walled Cardboard Box, inside plastic bag, with Foamed corners
  • Good for up to 3000w Rated Power (Any higher power than this and we highly recommend you get one of our custom hand built heavy duty enclosures)
  • 2.4ft3 GROSS VOLUME
  • 25.6in2 PORT AREA


  • L x W x H: 22.5 x 17 x 15

Recommended subwoofers for example are any more budget type of subs such as any Sundown audio subwoofer up to the U series.DO NOT USE THIS BOX FOR ANY BIGGER SUB THAN THAT SUCH AS THE X SERIES, ZV5 SERIES AND UP. IT WILL BREAK THE BOX. Anything above that in size and you would want to purchase one of our custom one off (hand built to order) subwoofer boxes.




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Warranty Information

Warranty Information

Your new Down4Sound product is covered by 1 limited warranty if purchased from Down4Sound or an authorized Down4Sound dealer. This warranty does not cover improper installation, accidental damage, misuse, abuse, improper wiring, operation of unit outside of listed specifications, or any product that has been modified or repaired by anyone other than Down4Sound. Your warranty covers defects in materials and/or workmanship ONLY and is not an insurance policy. The warranty only covers the original owner of the amplifier.

All warranty returns must be accompanied by the original sales invoice or receipt. You must contact us to request an RMA number prior to sending any returns via the RMA request form on our website. You are responsible for the cost of shipping your product back to us for warranty examination. If your product is covered under warranty, shipping back to you will be at no charge to you – if your product is replaced/repaired outside of warranty you must pay for return shipping and repair bill prior returning of the product or if no defect is found you are required to pay for return shipping only.

At the sole discretion of Down4Sound your product will be either repaired or replaced when it is being covered under warranty. In the event of shipping damage due to improper packaging on products being returned to Down4Sound the customer is liable for the cost of all damages, necessary repairs, or replacement. Be sure to properly pack your return!

*  Extended additional warranty purchased on amplifiers take in affect from the date of purchase and must also be stated on orginal sales invoice or receipt. 



Refund/Return Policy:


Down4Sound - Hours of Operation

Monday 6am - 9pm PDT
Tuesday 6am - 9pm PDT
Wednesday 6am - 9pm PDT
Thursday 6am - 9pm PDT
Friday 6am - 9pm PDT
Saturday 8am - 4pm PDT
Sunday Closed
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16 Reviews

  • 3

    Box is not wired!

    Posted by Alex on Dec 06, 2023

    The box looks to be of good quality and I'm sure will sound good. However, it is not pre-wired from the terminal cup, which was not expected. I'm not sure why you would not pre-wire a pre-fab box. I'm trying to figure out how to wire the thing. I called D4S and the person on the phone had no guidance for how it should be wired. After a few minutes they came back with, "yeah, you should probably solder it". Great, thanks. Now I need to buy something else to wire my pre-fab box. Please be more clear in your product description when your clear competition is other pre-fab boxes that are wired already!

  • 5

    Best prefab box out there

    Posted by Blake M on Jan 04, 2023

    Build quality is awesome. Perfect size. Put in trunk of my 2020 Ford Fusion and left me with plenty of extra room in the trunk for work stuff and groceries. Great job D4S on these pro fab boxes.

  • 5

    Quality Built Box

    Posted by Jeffrey Neth on Sep 19, 2022

    I still gave this box 5 stars and sounds killer but just wish I knew 4 days later they came out that they were coming out with new design box , lol.

  • 5

    Outstanding Subwoofer Enclosure

    Posted by Tim S. on Sep 10, 2022

    I purchased this box to stuff a 12" Deaf Bonce Avatar STU-1246 D1 sub into. I love the threaded inserts. The mounting holes lined up perfectly and the cut-out diameter was spot on. I also really appreciate the interior corner reinforcements. I know I'm pushing the maximum capabilities of this box with a 3,000 watt subwoofer ...but such is the the life of a basshead. If I break the box, I'll buy another. Get you one!

  • 5

    Quality Built Box

    Posted by BBQ Freak on Sep 05, 2022

    Love the box designs and love that it is tuned lower then most pre-fab boxes and is a great looking box . I put a Sundown U series sub in and sounds killer for a sound quality mix . I just wish I would of known they were coming out with the new design box three days after I bought this one for the same price .

  • 5


    Posted by CL on Jun 13, 2022

    Probably one of the best pre fab boxes I have seen. Love the truck liner over carpet.

  • 4

    Great Prefab box

    Posted by David M on Jun 06, 2022

    I have a Skar Audio VXF running off of 2300watts . Seams sturdy but time will tell, sounds better and hits lows better than my Skar prefab box. Some slight port noise but otherwise great box

  • 5

    12 Team D4S Pro Fab

    Posted by J Markma on Apr 12, 2022

    Awsome enclosure. I'm using a Sundown Sa 12 V2 in this enclosure and it sounds great.

  • 5


    Posted by Keith Bray on Apr 01, 2022

    Absolutely amazing hidden gem of a box. Quality, tuning, mounting, finish, just can't say enough good things about this beast. Extremely happy with my purchase, and would definitely recommend.

  • 5

    Awesome sub box

    Posted by Henry M on Mar 28, 2022

    This box is great i have a sundown SA 12 and it hits the lows hard i love it. Shipping was fast and great customer service

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