Sealed and ported, all three shapes

12 Inch Subwoofer Boxes

Twelve inch cabinets in standard, down-fire and wedge, CNC-cut in Tullahoma, Tennessee.

12 Inch Subwoofer Enclosure - Audio Intensity

Sealed and ported, all three shapes

Twelve inches is where a subwoofer stops working around the space and the space starts working around it. It reaches lower than a ten for the same power and moves more air for the same excursion, and the price is a cabinet you have to plan for rather than tuck away.

Sealed and ported, in all three orientations, machined in Tullahoma, Tennessee, to the parameters published for the driver each cabinet names.

12 inch cabinets in stock | sealed and ported | standard, down-fire and wedge in near-equal measure | single and dual | cut in Tullahoma

Cut, assembled and finished in Tullahoma, Tennessee, on ShopSabre routers from Langboard Elite MDF.

Net volume for a driver-matched cabinet is calculated from the parameters the driver manufacturer publishes for that model. Universal-cutout cabinets are cut to a standard cutout and a stated volume range instead.

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12 Inch Enclosures by Series

The series decides how the cabinet is built and how settled your driver choice needs to be. It does not decide how the box sounds, which is set by the volume and the alignment.

Every active 12 inch cabinet in stock, 29 August 2026, across three orientations.
SeriesFront baffleCutoutBest for
Performance Optimized1.5 in doubleCut to one driverYou know the driver and want the box matched to it
Micro Series1.5 inCut to one driverShallow spaces where a standard cabinet will not fit
Performance0.75 in singleUniversalA universal cutout when the driver is not decided
ProfessionalDouble or tripleCut to one driverReference builds where the cabinet is the point
Vehicle SpecificVaries by platformCut to one driverDirect fit in a named vehicle and year range
EconomySingleUniversalA straightforward twelve at the entry point

Shared across every row: Langboard Elite MDF cut on ShopSabre routers in Tullahoma, Tennessee. Plush black carpet. A Proline X ABS and carbon fibre composite terminal cup with stainless hardware, pre-wired in 12-gauge OFC. Construction method varies by series and is stated on each product page.

The Only Size Split Evenly Across All Three Shapes

On every other page one orientation dominates. At twelve inches standard front-firing, down-fire and wedge are split almost evenly, which makes the shape a real decision here rather than a consequence of what happens to exist.

That matters because the three are acoustically equivalent and physically very different. All are sealed or ported on their own terms; what changes is whether the cabinet needs a flat floor beneath it, an angled surface behind it, or neither. Settle the space first and the shortlist collapses.

How to Choose a 12 Inch Enclosure

Settle the shape first at this size

Orientation is split almost evenly here, so it is a genuine choice rather than a given. The space decides it: flat floor, angled surface, or neither.

Then sealed or ported

Sealed gives tighter, more accurate bass in a smaller cabinet and is more forgiving of placement. Ported gives more output around the tuning frequency from more airspace. At twelve inches that airspace difference is substantial.

Then single or dual

A dual is not twice the box. Each chamber is cut tighter than the same driver would get on its own, because the cabinet still has to fit the same space.

Match the series to how settled the driver is

Performance Optimized when you know the driver. Micro when depth is the binding constraint. Professional when the build is the point. Economy when a universal cutout at the entry point is what the job needs.

Read the tuning on the ported cabinets

Two cabinets of the same net volume tuned a few hertz apart are different products. The stated tuning tells you where the cabinet does its best work.

Space, Shape, Then Driver

A twelve needs planning, not tucking away

Measure the opening with trim in place and at its tightest point. The cabinet volumes at this size run considerably larger than at ten, and a ported twelve larger again, because the port has to fit inside the box alongside the net volume.

Then pick the shape for the surface you have

Down-fire wants a flat, solid floor and counts its feet into total height. Wedge wants something angled to sit against, a seat back or a hatch. Standard front-firing wants neither and is the default when the space is a plain box.

Then the driver model

Two twelve inch drivers from different lines want different net volumes, so the model number named on the product page is the match to work from rather than the nominal size. Where you have not settled on a driver, the universal-cutout cabinets take any twelve of the right size and depth.

Shape Is a Real Choice at Twelve Inches

Standard front-firing, down-fire and wedge are split almost evenly at this size and at no other. All three are cut to the same volume for a given driver, so the decision is purely about the surface you have to work with: a flat floor, something angled to sit against, or neither.

The Only Economy Cabinet We Cut Is a Twelve

A straightforward universal-cutout twelve at the bottom of the range. It is a properly built box rather than a thinner one, and it is the right answer when the driver is not decided and the budget is what is binding. Everything above it is cut to a named driver.

Driver-Matched First, With an Entry Point Below

Performance Optimized is the bulk of the range, each cabinet cut to one driver published parameters on a 1.5 inch double baffle. Micro Series covers the shallow-mount builds, Professional the reference builds, and Vehicle Specific the direct-fit cabinets for named trucks.

This is also the only size with an Economy cabinet, a straightforward universal twelve at the bottom of the range. It is a properly built box rather than a thinner one, and it is the right answer when the driver is undecided and the budget is the binding constraint.

Driver-matched

Performance Optimized Series

The bulk of the range

The bulk of the twelve inch range. Each cabinet is cut to one driver published parameters on a 1.5 inch double baffle, in all three orientations.

Cut to one driver

Shallow mount

Micro Series

Shallow-mount builds

Stack-fabricated with dowel reinforcement and cut shallower, for openings a standard twelve will not fit. Every Micro ships with feet.

Cut to one driver

Entry point

Economy Series

The entry point

A straightforward universal-cutout twelve at the bottom of the range, built on the same MDF and the same routers as everything above it.

Universal cutout

Baffle thickness and construction method vary by series. Each product page states how that cabinet is built and, where it is driver-matched, which model it was cut for.

Categories

Keep Reading

Supporting guides to help you design, build, and tune your system.

12 inch Subwoofer Box Questions

Is a 12 inch subwoofer better than a 10?

Lower, not better. A twelve reaches deeper for the same power and moves more air for the same excursion, which shows up on content with sustained low bass. What it costs you is cabinet volume, and a twelve in a box too small for it will be beaten by a ten in the right one.

Which shape should I choose at 12 inches?

The one the space suits, because all three are cut to the same volume for a given driver and none is acoustically superior. Down-fire needs a flat, solid floor and counts its feet into total height. Wedge needs an angled surface to sit against. Standard front-firing needs neither.

How much space does a 12 inch box actually need?

More than most people plan for, and a ported twelve more again, because the port has to fit inside the cabinet alongside the net volume. Published external dimensions are on every listing. Measure the opening with trim in place and at its tightest point.

Why do two 12 inch boxes have different internal volumes?

Because the volume is set by the driver rather than the cone diameter, and because a dual cabinet is constrained by the same opening a single is. Each chamber in a dual is cut tighter than the same driver would get on its own. That is deliberate rather than a data error.

Do you have a cheaper 12 inch option?

The Economy cabinet is the entry point at this size, a straightforward universal-cutout twelve. It is a properly built box on the same MDF and the same routers rather than a thinner one. Everything above it is cut to a named driver, which is what you are paying for.

Do these ship with polyfill?

Every sealed cabinet we build ships with polyfill already installed, and the quoted volume accounts for it. You do not need to add any and you should not remove it. Ported cabinets do not use polyfill, because it would move the port tuning.

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Last updated August 29, 2026