3 - 8 inch DIY Subwoofer Box Flatpack Kit

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MSRP: $299.99
— You save $200.00
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TEAM 3 - 8 inch DIY Subwoofer Box Flatpack Kit

Precut 3 8 ported subwoofer enclosure made with DIY flat pack subwoofer kit and glue.  Adding 3 - 8 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 3-8 ProFAB Subwoofer Enclosure


DIY Flatpack Subwoofer kit for 3 - 8 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 3 -8 inch DIY Subwoofer Box Flatpack Kit

  • WxHxD: 30 inches x 12 inches x 20 inches
  • 2.29 cubes after displacement 
  • Tuning Frequency: 33 hz
  • Port Size WxHxD: 3 x 10.5 x 30.5 inches
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4 Reviews

  • 5
    3-8’’ DIY flatpack kit

    I purchased 2 of these kits. All wood pieces were cut to correct size, & cut square so each piece fits together perfectly!!. Surprisingly, there were no damaged parts. Considering that a sheet of MDF board costs about half the price of the kit, the time it will take you to cut down the wood, cut out the holes for the woofers, it’s a no brainer to just buy the kit from D4S!!

  • 5
    DYI enclosure

    Was stuck at a crossroads I couldn't find a box for three 8's that would fit in the back of my Q50 until I saw this granted it was smaller than spec for 3 sundown X8s but it was do or die and I'm glad I did. Box was super easy to put together alot easier than maybe mentioned in the description. It sounds great couldn't be more happy with it and the quality is definitely 5 stars the boards came solid and straight and each one of them were cut with precision and fit together perfectly. On top of that the engraved Down4sound logo on the side is pretty sick.

  • 5
    Speaker box

    I was impressed with the quality of this kit. If one of these boxes will work for your application you can't go wrong. Will definitely order one for my other ride.

  • 4
    DIY flat pack

    This is a nice box but all the peices are not pre drilled. Some are missing pre drilled holes and some aren't drilled at all but it does come with a terminal

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