Sealed, Driver-Matched, 12 Inch

Stereo Integrity Subwoofer Boxes and Enclosures

Sealed enclosures cut for Stereo Integrity subwoofers, CNC-machined in Tullahoma, Tennessee.

Stereo Integrity Subwoofer Boxes and Enclosures

Sealed, Driver-Matched, 12 Inch

Stereo Integrity drivers are bought by people chasing accuracy rather than volume, and a sealed cabinet is what preserves that. Both enclosures here are sealed twelve inch builds, cut in Tullahoma, Tennessee to the parameters Stereo Integrity publishes.

One single and one dual, both on the Performance Optimized standard. The choice on this page is how many drivers you are running, not how the cabinet is built.

Sealed twelve inch Stereo Integrity enclosures in single and dual, both Performance Optimized on a 1.5 inch double baffle, polyfill installed.

Cut, assembled and finished in Tullahoma, Tennessee, to the parameters Stereo Integrity publishes for each driver.

Driver parameters are taken from Stereo Integrity published data. We build enclosures to those figures; we do not currently stock Stereo Integrity drivers and make no claim to represent the brand.

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Stereo Integrity Enclosures at a Glance

Both cabinets share the alignment, the size and the build standard, so this is really a comparison of one decision. Match the model named on the product page.

Sealed twelve inch Performance Optimized cabinets, in stock 28 August 2026.
SingleDual
DriversOneTwo, each in its own chamber
AlignmentSealedSealed
Baffle1.5 in double1.5 in double
OrientationStandard front-firingStandard front-firing
Best whenThe sub completes a front stageYou want the same character with more of it

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.

One Size, One Alignment, One Decision

There is no series ladder and no alignment choice to work through here. Both cabinets are sealed, both are twelve inch, and both are cut to one driver on a 1.5 inch double baffle. That leaves exactly one question: single or dual.

Sealed is the right alignment for these drivers rather than a limitation of the range. A closed volume loads the cone and rolls off gently, which is what keeps transient response tight. Trading that for output around a tuning point would give up the reason the driver was chosen.

How to Choose

Single for detail, dual for headroom

The single is the choice when the subwoofer is there to complete a front stage. The dual is for when you want the same character with more of it.

Work out the wiring before you buy

A dual cabinet changes the load your amplifier sees, and Stereo Integrity drivers come in more than one coil configuration. That combination decides what your amp is actually driving.

Do not shop this range on volume alone

Both cabinets publish a net volume cut for a specific driver. A figure that looks small next to a generic twelve inch box is usually correct rather than stingy.

Then source the driver

We do not currently stock Stereo Integrity drivers, so these cabinets are cut for a subwoofer you already own or buy elsewhere.

Space, Coil Configuration and the Driver

Confirm the model first

Stereo Integrity publishes different parameters across its twelve inch drivers. The product page names the model each cabinet was cut for, and that is the match to work from rather than the diameter.

Then decide single or dual

A dual asks for more cargo area and more amplifier, and it changes the impedance your amp sees. Work that out before you order rather than after.

Then check the opening

Both are standard front-firing cabinets, so they need the opening rather than floor clearance or a seat back to lean against. Published external dimensions are on each listing.

The Only Real Choice Here Is Single or Dual

Both cabinets are sealed twelve inch Performance Optimized builds on a 1.5 inch double baffle, cut to one driver. That removes the usual series and alignment questions and leaves the one that actually changes your install: how many drivers, and what that does to your amplifier load.

We Cut the Box, You Source the Driver

We do not currently stock Stereo Integrity drivers. Both cabinets are built to the figures Stereo Integrity publishes, for a subwoofer you already own or buy elsewhere. Nothing about the fit depends on where the driver came from.

Single or Dual, Both Sealed

The single cabinet suits a build where the driver is doing detail work and the cargo space matters. The dual is not two singles joined together: each chamber is cut tighter than the same driver gets on its own, so the cabinet still fits a realistic space.

Both ship with polyfill already installed, because the fill is part of how the cabinet was tuned rather than an accessory to add on arrival.

Driver-matched

Performance Optimized Series

Both cabinets

The build standard for both cabinets: a 1.5 inch double baffle cut to the published alignment of one driver rather than to a size class.

Cut to one driver

For detail

Single-driver cabinet

Twelve inch

The choice when the subwoofer is there to finish a front stage and the cargo area still has to be usable.

Sealed

For headroom

Dual-driver cabinet

Twelve inch

Two drivers, each in its own chamber cut tighter than the single equivalent so the cabinet still fits a real space.

Sealed

Baffle thickness and construction method vary by series. Each product page states how that cabinet is built and which Stereo Integrity model it was cut for.

Categories

Keep Reading

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

Stereo Integrity Subwoofer Box Questions

Which Stereo Integrity subwoofers do these boxes fit?

Both cabinets are cut for Stereo Integrity twelve inch subwoofers, and each product page names the exact model it was designed around. Match the model rather than the diameter, because the parameters differ across their twelve inch drivers.

Do you sell Stereo Integrity subwoofers?

Not at the moment. We build the enclosure, cut to the figures Stereo Integrity publishes, and you source the driver. If you already own the subwoofer, that is exactly what these cabinets are for.

Should I choose the single or the dual?

The single suits a build where the subwoofer completes a front stage and cargo space matters. The dual gives the same character with more output, at the cost of space, amplifier power and a different impedance load. Work the wiring out before ordering.

Why are both of these sealed?

Because a sealed alignment is what these drivers are chosen for. It loads the cone, rolls off gently and keeps transient response tight. A ported cabinet would buy output around its tuning point at the cost of the accuracy that made the driver worth buying.

Do these ship with polyfill?

Yes. Both cabinets ship with polyfill already installed. You do not need to add any and you should not remove it, because the fill is part of how the enclosure was tuned.

Can you cut a size you do not list?

Possibly. Everything is CNC-cut to order in Tullahoma, Tennessee. Contact us with the Stereo Integrity model and the space you are working with and we will tell you whether we can build it.

Drivers Built to Match

12 Inch Subwoofers We Do Stock

The drivers below are matched to the enclosures above by Thiele-Small parameters. Buying together guarantees the alignment, port tuning, and damping work the way the engineering intended.

Prodigy Audio 12 inch Subwoofer NB2 Series - Prodigy Subwoofer for car audio systems

Prodigy Audio

Prodigy Audio 12 inch Subwoofer | NB2 Series

$ 150.99 $ 161.99
Image Dynamics ID12 V4 12 inch Subwoofer

Image Dynamics

Image Dynamics ID12 V4 12 inch Subwoofer

$ 159.99
Arc Audio X2V2 12-inch Subwoofer

Arc Audio

Arc Audio X2V2 12" Subwoofer

$ 229.00
Image Dynamics IDQ12 V4 12 inch Subwoofer

Image Dynamics

Image Dynamics IDQ12 V4 12 inch Subwoofer

$ 280.99

View all 12 inch subwoofers | Need a custom build? Contact us

Drivers Built to Match

10 Inch Subwoofers We Do Stock

The drivers below are matched to the enclosures above by Thiele-Small parameters. Buying together guarantees the alignment, port tuning, and damping work the way the engineering intended.

Prodigy Audio 10 inch Subwoofer NB2 Series - Prodigy Subwoofer for car audio systems

Prodigy Audio

Prodigy Audio 10 inch Subwoofer | NB2 Series

$ 138.99 $ 145.99
Image Dynamics ID10 V4 10-inch Subwoofer

Image Dynamics

Image Dynamics ID10 V4 10-inch Subwoofer

$ 139.99
Prodigy Audio 10 inch Subwoofer NB3 Series - Prodigy Subwoofer for car audio systems

Prodigy Audio

Prodigy Audio 10 inch Subwoofer | NB3 Series

$ 148.99 $ 165.99
Sony XS - W104ES Mobile ES Series 10-inch 4 - ohm component subwoofer

Sony

Sony XS-W104ES Mobile ES Series 10" 4-ohm component subwoofer

$ 198.00 $ 299.99

View all 10 inch subwoofers | Need a custom build? Contact us

Amplifiers for the System

Power for Your Subwoofer System

Monoblock amplifiers matched to the power requirements of the drivers these enclosures are built for. Buy the enclosure, match the driver, pick the right amplifier.

Rainbow Audio SL - M2 2 channel micro amplifier

Rainbow

Rainbow Audio SL-M2 2 channel micro amplifier

$ 89.99 $ 549.99
Rainbow Audio Dream 0.5K Mono Class D Amplifier

Rainbow

Rainbow Audio Dream 0.5K Mono Class D Amplifier

$ 89.99 $ 399.99
US Acoustics Lisa 4 Channel Class AB Amplifier 4 x 50w US Acoustics

US Acoustics

US Acoustics Lisa | 4 Channel Class AB Amplifier | 4 x 50w

$ 159.99
US Acoustics Wendy 2 Channel Class AB Amplifier 2 x 75w US Acoustics

US Acoustics

US Acoustics Wendy | 2 Channel Class AB Amplifier | 2 x 75w

$ 159.99

View all car amplifiers | Need a custom build? Contact us

Last updated August 28, 2026