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SPL Boxes SB112 Single sealed 12" subwoofer enclosure

Item # 419SB112

1 question - 1 answer

Item # 419SB112

In stock

About the SPL Boxes SB112

Bob Bihlmayer

We all know how a good subwoofer can enhance your musical enjoyment, but not everyone wants to build their own box. SPL Boxes to the rescue! These heavy-duty enclosures can take the punishment of the car environment, with rugged 3/4" MDF construction to give your sub plenty of support. Attractive and tough charcoal carpet protects the box from nicks and dings, while gold-tipped spring terminals hold your speaker wires securely. This SB112 box holds one 12" sub in a sealed enclosure.

Product highlights:

  • sealed enclosure for 12" subwoofer
  • 3/4" MDF construction
  • gray carpet covering
  • internal volume: 1.2 cubic feet
  • cutout diameter: 11.22"
  • dimensions: 16.25"W x 13.125"H x 12.75"D
  • warranty: 1 year
  • MFR # SB112

What's in the box:

  • Sealed enclosure for one 12" subwoofer

Customer reviews for SPL Boxes SB112

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4.0 out of 5 stars
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More details on the SPL Boxes SB112

Pat M.

Product Research


Design: The SB112 is an unloaded, sealed enclosure for a single 12" subwoofer. It's constructed of ¾" MDF (medium-density fiberboard) and covered in charcoal colored carpet.

Internal Box Volume: The enclosure has a volume of 1.2 ft³.

Terminals: The wire terminals are spring-posts (one pair), mounted on the left side. The spring terminals will accept pin connectors and bare wire up to 12-gauge. Inside the enclosure there are 0.205" male quick-slides (will accept 0.205" female quick slides) for both the positive and negative terminals. The wire can also be attached using the nuts holding the quick-slides in place.

Note: Speaker wire is needed to connect the terminals to the subwoofer.

Brackets: Brackets for securing the enclosure in your vehicle are recommended.

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Customer Q&A

1 question already asked

Will it fit under my back seat in my f150?
logan  May 31, 2022
1 answer
So, with subwoofer boxes that are not vehicle specific, you may have to take some measurements of the available space where you wish to mount the enclosure to check fitment. This enclosure has the dimensions of 16.25"W x 13.125"H x 12.75"D.
thomas  Jun 01, 2022 (Staff)

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