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Down4Sound 2 - 15 inch DIY Subwoofer Box Flatpack Kit

Description 5 Reviews Description TEAM 2 - 15 inch DIY Subwoofer Box Flatpack Kit Precut for 2 - 15 inch subwoofers ported subwoofer enclosure made with DIY flat pack subwoofer kit and glue. Adding 2 - 15 inch subwoofers should be a breeze because the MDF is a high strength, that's precut and predrilled. Not recommended for beginners as this assembly requires some skill. If you are needing one already assembled check out our 2 - 15 Ported Profab Enclosure DIY Flatpack Subwoofer kit for 2 - 15 Subwoofer kit includes: all the pieces to build a box, except terminal, glue, and screws all pieces are pre-drilled Team D4S logo top Other Specifications on the 2 - 15 Flatpack Subwoofer Kit: WxHxD: 40 inches x 18.75 inches x 24.5 inches 6.58 cubes after displacement Tuning Frequency: 31 hz Port Size WxHxD: 5.5 x 16.5 x 31.5 inches Cutout is 13.88" MAXIMUM SUBWOOFER WEIGHT - 40 POUNDS EACH ****ALL SALES ARE FINAL**** View All Close 5 Reviews 5 15 flatpack Posted by Jimmy moore on Sep 05, 2025 Its a great subwoofer box had fun put it together 4 broken terminal no instructions Posted by jeremy hull on Apr 05, 2022 great bang for your buck however my terminal cup came broken and there was no instructions 5 Sub enclosure Posted by Charles on Jan 10, 2022 Great product very fast shipping no issues at all 5 best value you can get! Posted by Jeremy Hull on Jan 05, 2022 i saved 350 bucks just by building my own profab box. holes are drilled for the screws and the wood is super strong and fits together perfectly. its so easy to put together that anyone could do it. thanks JP! 4 Quality Posted by Jacob king with Audio lane on Dec 29, 2021 Great quality, came as described, however the quick connect terminal arrived crushed into pieces. View All Close
Thiele-Small Parameters

Measured at small signal levels per AES standards

Electromechanical
Fs
31 Hz
Compliance & Mass
Vas
186.4 L

Parameters measured per AES2-1984 (r2003) standards. Small-signal parameters valid within linear operating region.

Compare Prices(1 retailer)
Down4SoundAuthorized Dealer
Available
$250.00
Updated 11/10/2026
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Frequently Asked Questions

What is the Down4Sound 2 - 15 inch DIY Subwoofer Box Flatpack Kit?

The Down4Sound 2 - 15 inch DIY Subwoofer Box Flatpack Kit is car audio equipment made by Down4Sound.

How much does the Down4Sound 2 - 15 inch DIY Subwoofer Box Flatpack Kit cost?

See the recorded retailer prices in the "Where to Buy" section. Prices and availability can change; confirm both with the retailer before purchasing.

Where can I buy the Down4Sound 2 - 15 inch DIY Subwoofer Box Flatpack Kit?

The "Where to Buy" section lists retailers we have recorded carrying the Down4Sound 2 - 15 inch DIY Subwoofer Box Flatpack Kit. Check each listing's availability and confirm warranty coverage with the retailer.

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