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SPL Boxes SB6X9-BL Pair of sealed 6"x9" wedge-style enclosures

Item # 419SB6X9BL

4 questions - 4 answers

Item # 419SB6X9BL

In stock

About the SPL Boxes SB6X9-BL

Bob Bihlmayer

When you can't install your 6x9" speakers in your vehicle's factory openings, SPL Boxes' SB6X9-BL enclosures give you an alternative that's built to last. These heavy-duty wedge-shaped enclosures can take the punishment of the car, truck, marine, or off-road environment. They feature rugged 1/2" MDF construction and a tough bedliner finish that protects the boxes from the elements. Gold-tipped spring terminals hold your speaker wires securely. These SB110V boxes each hold one 6x9" speaker in a sealed enclosure. Sold as pairs.

Product highlights:

  • sealed enclosures for 6x9" subwoofers
  • 1/2" MDF construction
  • bedliner finish
  • sold in pairs
  • dimensions: 12"W x 8.375"H x 7.125"D1 x 5"D2
  • warranty: 1 year
  • MFR # SB6X9-BL

What's in the box:

  • 2 Wedge-style enclosures (each holds a single 6x9 speaker)

Customer reviews for SPL Boxes SB6X9-BL

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5.0 out of 5 stars
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More details on the SPL Boxes SB6X9-BL

Pat M.

Product Research


Design: The SB6X9BL is a pair of unloaded, sealed enclosures for 6x9 speakers. They are covered with a bedliner type material. Each enclosure has a volume of approximately 0.24 ft³.

Terminals: Each enclosure has a pair of spring terminals mounted in the rear panel. The spring terminals will accept bare wire up to 12 gauge or pin connectors. Inside the enclosure, each terminal has a 0.205" male quick-slide (will accept 0.205" female quick slides) for both the positive and negative terminals.

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

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

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Customer Q&A

4 questions already asked

Will these fit behind the seat of a 2000 Nissan Frontier XE?
donny  Apr 22, 2023
1 answer
Thank you for your question, DD. For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
andrea  Apr 22, 2023 (Staff)
Where do these go? Front rear or truck bed?
brian  Apr 08, 2023
1 answer
These bad boys can go wherever you need good sound, Brian! I would say most commonly we see them installed behind truck seats in truck cabs with no existing speaker locations, or on rear decks of vehicles to add speakers. Since they are universal, they are extremely flexible application wise and most 6x9 speakers we carry are a good fit!
bo  Apr 09, 2023 (Staff)
what size subwoofer???s fit in these?
genaro  Nov 26, 2022
1 answer
We offer these boxes to hold the 6x9 speakers we offer. While we do not have a 6x9 subwoofer, it could hold a 6x9 subwoofer that fits within the mounting parameters of boxes.
jason  Nov 27, 2022 (Staff)
Won't installing speakers in a sealed box change the way they sound? I bought a plastic enclosure B/4 for a diiferent pair and they sounded horrible until a friend said they were compressed so I had to drill large holes in the back and that solved the problem
james  Jun 20, 2022
1 answer
You're absolutely correct James! Anytime you change the enclosure you will affect the speaker sound. One advantage to these MDF boxes is they will sound more warm and lifelike vs the ABS plastic made counterparts. Using a polyfill material can always warm up the ABS enclosures, too. We wouldn't advise porting these however, we see they perform well with a wide range of 6x9 speakers. Small sealed enclosures are generally the rule of thumb for tight, accurate bass response. Any time you'd like boomier, deeper bass go ported! These are a super easy way to drop some sound in vehicles that don't have the factory spot for a 6x9.
bo  Jun 20, 2022 (Staff)

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