Down4sound PRO-FAB 12 | 2 12 Sub Box | Dual 12-Inch Ported Subwoofer Enclosure Box

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  • Down4Sound 2- 12 Team D4S PRO-FAB Ported Subwoofer Enclosure, Dual 12 Inch Ported Sub box Enclosure
  • Down4Sound 2- 12 Team D4S PRO-FAB Ported Subwoofer Enclosure, Dual 12 Inch Ported Sub box Enclosure
  • Down4Sound 2- 12 Team D4S PRO-FAB Ported Subwoofer Enclosure, Dual 12 Inch Ported Sub box Enclosure
MSRP: $83,387.76
— You save $20,847.46


Down4sound Dual 12 Inch Ported PROFAB Sub box Enclosure (2 - 12):

Down4sound PRO-FAB 12 | 2 12 Sub Box | Dual 12-Inch Ported Subwoofer Enclosure Box

Looking for a sub box to enhance your car audio system? Look no further than our selection of 12 inch sub boxes, including our popular dual 12 sub box and 12 inch ported sub box options.

Our dual 12 sub box is the perfect choice for serious bassheads. With two 12 inch subwoofers and a carefully designed for ported enclosure applications, this sub box delivers deep, rich bass that will make your music come alive. And with our high-quality construction, you can be sure that your sub box will last for years to come.

For those who want the perfect combination of power and precision, our 12 inch ported sub box is the way to go. The carefully designed port allows for maximum airflow, delivering a crisp and accurate sound that is sure to impress. And with our affordable prices, you don't have to break the bank to get the high-quality audio you deserve.

  • 4.0 Cube Dual 12" Enclosure
  • Subwoofer cutout - 11 1/16"
  • .75" MDF
  • 31Hz Tuning
  • Mounting Depth- 15"
  • Black Bedliner Finish
  • Plastic terminal Cup
  • Plastic Bag
  • Foam Corners
  • Double Wall Shipping Box 
  • 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)
  • Designed by Bassahaulic Productions 

Down4sound Profab 2-12 SUBWOOFER BOX DIMENSIONS: L x W x H: 32.5 x 20 x 16

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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33 Reviews

  • 4


    Posted by Tyler on Jul 16, 2024

    The box is NOT 16 inches tall. It is 15.25 inches tall. The only reason I specifically bought this box was because it needed to fill a 16 inch space....very disappointing for my particular situation. Not worth trying to refund, but I wouldn't have bought it if I knew this beforehand. Although, box seems fine aside from that.

  • 5

    Pro fab box

    Posted by Paul Smith on Feb 15, 2024

    Let me start off by saying Jp and the D4s staff are fantastic and very helpful!!! Now to the box review. When I first got to use it my Sundown u12s were RETARDED Loud in it but when I started noticing some rattling from the box. The subs were actually pushing the box apart. The enclosure is built nice, my only suggestion is to pre drill the holes and rabbit joint the corners and it would be perfect!! No way am i knocking Jp because when I called the staff they gave me a 40.00 credit and appreciated the feedback but the u12s are too much for this box. I hope this helps and Jp you and your staff are fantastic!! D4s for life!!

  • 3

    Great box for looks

    Posted by Kemkyothood on Apr 03, 2023

    It's a great box but the bass is old box sound way better and louder.i might have order the wrong box.i have two sundown 12 u and they are 1500 watts .I took the box to a audio shop and they said it sound way better in my old box and hit way harder.i guess I try another box later a bigger one.

  • 5

    Sub box

    Posted by Frank on Dec 19, 2022

    Best sub box I ever owned . Heavy duty love the engraving. All around perfect box for my subs.

  • 5

    Exceeded my expectations. Can’t beat it for the price.

    Posted by Timothy Scott on Nov 09, 2022

    Sounds great. Definitely plays lower than I expected and takes every bit of 3000w with ease.

  • 5

    Pro fab dual 12 d4s

    Posted by Kenny on Aug 30, 2022

    The box sounds excellent. I always built boxes and this hits very good. Not ro mention very well made .

  • 5

    Best Pre-Fab

    Posted by Hans Marske on Aug 26, 2022

    This box is the best pre-fab enclosure I have ever purchased. It actually hits the lows! Sounds amazing. Nice finish on it as well. Thank u.

  • 4

    Good “prefab”

    Posted by Shaun on Aug 17, 2022

    Well built box with good tuning, exactly what I was looking for saved me from building a box. only issue I had with it is the Mounting holes for the woofers, the bolt pattern was not correct the circumference was to small for my deaf bonce apocalypse woofers tried everything to make them work but had to make my own holes. Thanks for the awesome looking box D4S!!!

  • 4


    Posted by James Hohmann on Aug 12, 2022

    This box would be better with 2 terminal cups, so if you are running 2 2 ohm subs, you can. wire them to 1 ohm.

  • 5

    Sweet enclosure

    Posted by Kevin on Aug 02, 2022

    This box sounds amazing! I've got two Sundown SA Classic 12s in mine and this is a night and day difference from the cheap prefab box I used previously. Plus I got it delivered to my door in 3 days. Thank you for making a quality enclosure at a decent price!

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