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Home/Equipment/Subwoofers/Down4Sound/Dual 12" Custom Kerf Ported Subwoofer Box (HAND MADE IN THE USA)
Dual 12" Custom Kerf Ported Subwoofer Box (HAND MADE IN THE USA)
Down4Sound/Subwoofer

Down4Sound Dual 12" Custom Kerf Ported Subwoofer Box (HAND MADE IN THE USA)

Description 12 Reviews Description CURRENTLY (HAND MADE IN THE USA) BOX IN PICTURES IS JUST AN EXAMPLE. ORDERS CAN ONLY BE CANCELED WITHIN 24 HOURS OF PURCHASE, AFTER 24 HOURS THEY BECOME FINALE SALE. **Maximum available dimensions for sub box to fit inside of. Its mandatory to provide and very important for you to measure so when you place your order you know your subwoofer box will fit in the space you have for it, there is no returns on these boxes as they are built to order to fit your exact needs** View All Close 12 Reviews 5 12 subwoofer box Posted by Antonnio Mcquarters on Sep 27, 2025 Best box i have purchased, my friends love it and it blends in with the set up i have in my truck, sound amazing and is solid, thanks alot ! 5 Dual 12 custom kerf port hand made enclosure Posted by Chad Woesner on Aug 25, 2025 Thank you down4sound john did an amazing job building my enclosure to my exact measurements and color very solid and sounds amazing I couldn't be happier with this build. I will definitely be doing more business with you guys for my next project. Thanks again. 3 Enclosure build is awesome perfectly made Posted by Angel Mota on Aug 08, 2022 The only reason for the Three stars is because it took a little longer than the 6 to time it says actually took about 12 weeks but other than that its a well built enclosure 5 Box sounds and looks great Posted by Chris Fiske on Mar 09, 2022 This will be the second box I've had built.. two different people did the box's and I have to say, you can definitely tell the difference in builders not gone say which box is better or worse they both nice but you can tell one took more time then the other one... 5 Everything was excellent Posted by Robert Stevenson on Oct 27, 2020 This box is a work of art Keith does amazing work! I would highly recommend if your looking for top notch work! 5 Best enclosure ever Posted by Jason Ghering on Sep 08, 2020 From the time I ordered the enclosure till finish. Barb helped me every step and let me know any changes, and if delays. She is a great person and Keiths work is amazing and best I ever seen. 2 Oh boy Posted by Tj on Jul 27, 2020 The build quality of this box is out of this world fantastic. The reason for my lower score is because of the build time, shipping and terminal cup. The build time took about 2-3 weeks longer than I was promised,shipping took 3 days longer than promised. For the terminal cup, the way it is installed/bulid in needs to be a push style cup. The fact i have to use ring terminals for the speaker wire is crazy. When you get the wire hooked up to the terminal cup and put back in,it bends the hell out of the wire and is currently causing issues and now im looking at having to replace ther terminal cup 5 Just do it Posted by Mitch Oliver on Oct 25, 2019 If your thinking about it, just do it! You WILL NOT be disappointed. After having my car audio shop I go to build me a box that turned out wrong (cubic feet was too small, tuned incredibly high not at 32HZ like I asked, not flush mounted like I asked) I decided to go with D4S. I received my box last night and the craftsmanship is outstanding! Keith Sanders is awesome and totally killed it! It’s exactly build to the specs I wanted. You can get them cheaper from shops but what happened to me might happen to you. You get what you pay for. This new box made all the difference. It’s so much cleaner and louder now. Very pleased. 5 Awesome! Posted by Johnathan Foxworthy on Apr 10, 2019 Amazing Craftsmanship. Best customer service! 5 Best Enclosure and Excellent Craftsmanship! Posted by Wil Santiago on Nov 07, 2018 First of all let me say thanks to Kieth and Barbara for excellent customer service. Barbara took care of my order and kept me informed throughout the process. I did not rush or bother them with endless communications. Keith sent me out some pictures of the enclosure and and the process before shipping. Now to the best part, I received the enclosure on Monday and with the packaging, I was very impressed so I knew if they took this much time to package the box, I could expect nothing but a 5 star box inside. I was blown away with Keith's craftsmanship and right away I had to text Barbara and let them know how happy I was. About 2 months ago, I order a kerf ported enclosure from another online seller who is always running specials on kerf ported boxes and I must tell you, first of all, you get what you pay for, second of all, the box went into the trash a month ago. The box I got from D4S came sanded perfectly, great wood, rounded corners, 45's inside all the corners for reinforcement, and packaging was excellent! I will continue to order from D4S. Thank you all! Next View All Close
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Updated 4/14/2026

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Frequently Asked Questions

What is the Down4Sound Dual 12" Custom Kerf Ported Subwoofer Box (HAND MADE IN THE USA)?

The Down4Sound Dual 12" Custom Kerf Ported Subwoofer Box (HAND MADE IN THE USA) is a car audio equipment made by Down4Sound. View full specifications and where to buy on this page.

Where can I buy the Down4Sound Dual 12" Custom Kerf Ported Subwoofer Box (HAND MADE IN THE USA)?

You can purchase the Down4Sound Dual 12" Custom Kerf Ported Subwoofer Box (HAND MADE IN THE USA) from authorized dealers listed in the "Where to Buy" section on this page. We recommend buying from authorized retailers to ensure warranty coverage and genuine products.

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