Two Drivers, One Cabinet

Dual 15 Inch Subwoofer Boxes

Dual 15 inch subwoofer boxes, CNC-cut in Tullahoma, Tennessee.

Dual 15 inch subwoofer box built by Proline X in Tullahoma, Tennessee

Two Drivers, One Cabinet

Two fifteens are the largest pair we cut. The cabinets run wide, so measure the opening before anything else; what they give back is air moved at the bottom octave that nothing smaller matches.

Every cabinet here holds two 15 inch drivers. The driver-matched cabinets are cut to the parameters of the driver they name, and the universal cabinets take any pair that clears their cutout and depth. Each listing says whether the pair shares one chamber or gets one each, and gives the net volume for the whole box.

Dual 15 inch enclosures, sealed and ported, in standard front-firing and wedge.

Cut, assembled and finished in Tullahoma, Tennessee.

Driver-matched cabinets are cut to the parameters each driver's maker publishes. Enclosure only unless the listing says loaded.

Decision Shortcut

Find Your Match

Curated picks matched to common build goals

Best Value

Proline X PO 15D-S W IDMAX sealed wedge, front baffle with gloss black insert and pre-wired leads, 36 by 18 inches.

Proline X

Performance Optimized Wedge Sealed Dual 15" Enclosure | Image Dynamics IDMAX15 V.4

The lowest-priced dual 15 inch cabinet in stock, $479.99.

$ 479.99

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Best for SQ

Performance Optimized Series PO 15D-S GUS woofer enclosure by Proline, featuring a black frame with two circular cutouts showing beige acoustic panels inside, with dimension markings of 36 inches by 17.5 inches.

Proline X

Performance Optimized Wedge Sealed Dual 15" Enclosure | ResoNix GUS-15

Two separate sealed chambers, each cut to the ResoNix driver it names, so both drivers see their own alignment.

$ 499.99

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Best High-Output

Pro 15D-P Mojo Pro placeholder

Proline X

Professional Series Ported Dual 15" Enclosure | Memphis Audio MOJO Pro 15

A Professional Series ported cabinet for a matched pair, one shared chamber vented at 31.5 Hz.

$ 761.99

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Best for Trucks

Proline X PO 15D-S W VCW sealed wedge, front baffle with gloss black insert and pre-wired leads, 36 by 18 inches.

Proline X

Performance Optimized Wedge Sealed Dual 15" Enclosure | NVX VCW15v3

A wedge tapered to sit flush against a seat back or cab wall, the shape that fits behind a truck seat.

$ 479.99

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Every Dual 15 Inch Build, Side by Side

The series decides how the pair shares the cabinet. Prices are the lowest in stock in each series today.

Dual 15 inch cabinets by series.
SeriesChambersAlignmentShapesFitFrom
Performance OptimizedTwo separate chambersSealedWedgeDriver-matched$479.99
ProfessionalOne shared chamberPortedStandard front-firingDriver-matched$687.99
MicroStated on each listingSealedStandard front-firingDriver-matched$699.99

Warranty runs by series: 1 year limited on Performance and Performance Optimized, 2 years on Professional, Micro and Vehicle Specific.

One Chamber or Two

Two separate chambers
The Performance Optimized sealed duals split the cabinet with a bonded full-height divider, so each driver gets its own sealed volume and its own polyfill. Neither driver loads the other, and the alignment on the listing is the alignment in each chamber.

One shared, ported chamber
The Professional Series duals put both drivers in one chamber vented through one slot port. That is how a ported pair is normally built, and it is why the pair has to match: same model, same coil, so neither driver is pushing against a load it was not picked for.

How to Choose a Dual 15 Inch Box

Start from the driver
Most of these cabinets are cut to one named driver. Match the model and coil on the listing to the pair you own, and run two of the same driver.

Sealed or ported
Sealed is the smaller, more forgiving box and holds its output below tuning. Ported gives more output around its tuning from a larger cabinet. The sealed and ported pages set the two side by side.

Plan the wiring before the box
Two dual-voice-coil drivers can land on several final loads. Two dual 2 ohm drivers reach 0.5, 2 or 8 ohms; two dual 4 ohm drivers reach 1, 4 or 16 ohms. Pick the pair to suit the amplifier's stable load, then the box. How to wire two subs to one amp walks through each.

Or stay single
One 15 is on the 15 inch box page, with every shape and alignment we cut for it.

Will a Dual 15 Fit?

Measure width first
A dual cabinet is wide before it is deep. The dual 15 inch cabinets here run from about 34 to 46 inches wide, and every listing prints its external dimensions. Measure the opening at its narrowest point, not the floor.

Behind a seat or against a seat back
The wedges rake their rear panel to sit flush against a seat back or a truck cab wall. See every shape in the wedge collection.

Net Volume Is for the Whole Box

On a dual listing the net volume is the total for both drivers. Where the pair gets separate chambers, the listing also gives the figure per chamber, which is what each driver actually sees.

Run a Matched Pair

Two of the same driver, same coil. Mixing models or coils in one cabinet gives each driver a different load and neither the alignment it was cut for.

The Dual 15 Inch Range at a Glance

Performance Optimized (two separate chambers): sealed, wedge, cut for Image Dynamics, Memphis Audio, NVX, ResoNix, Stereo Integrity. From $479.99.

Professional (one shared chamber): ported, standard front-firing, cut for DD Audio, Image Dynamics, Memphis Audio, Skar Audio, Sundown Audio. From $687.99.

Micro (chamber layout on each listing): sealed, standard front-firing, cut for ResoNix. From $699.99.

Two chambers

Performance Optimized duals

Dual 15 inch·From $479.99

Sealed, wedge. Driver-matched fit.

1 year limited warranty on Performance Optimized

Shared chamber

Professional duals

Dual 15 inch·From $687.99

Ported, standard front-firing. Driver-matched fit.

2 year limited warranty on Professional

Compact

Micro duals

Dual 15 inch·From $699.99

Sealed, standard front-firing. Driver-matched fit.

2 year limited warranty on Micro

Construction and chamber layout are stated on each product page.

Categories

Keep Reading

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

Dual 15 Inch Subwoofer Box Questions

Do both drivers share one chamber?

It depends on the series. The Performance Optimized sealed duals give each driver its own chamber behind a full-height divider. The Professional Series ported duals put both drivers in one chamber with one port. Each listing states which.

Is the net volume per driver or for the whole box?

For the whole box. On a dual listing the net volume is the total; where the chambers are separate, the listing also gives the figure per chamber.

Can I put two different subwoofers in one dual box?

No. Run two of the same model and the same coil. Different drivers want different volumes and present different loads, so in one cabinet neither gets the alignment it was cut for.

How should I wire two dual voice coil subwoofers?

Two dual 2 ohm drivers can land on 0.5, 2 or 8 ohms; two dual 4 ohm drivers on 1, 4 or 16 ohms. Match the final load to the amplifier's minimum stable impedance. How to wire two subs to one amp shows each configuration.

Sealed or ported for a dual 15?

Sealed is smaller and holds its output below tuning; ported gives more output around its tuning from a larger cabinet, and every ported listing states its tuning. With two drivers the size difference grows, so measure before choosing ported.

How wide are dual 15 inch boxes?

The cabinets here run from about 34 to 46 inches wide, and each listing prints its external dimensions. Measure the narrowest point of the opening.

Is a dual 15 better than a single 18?

Two drivers of the smaller size move about the same air as one of the next size up and usually respond faster, at the cost of a wider cabinet and a second driver to buy. The dual subwoofer setup guide covers the trade in detail.

Subwoofer Boxes by Brand

Every box is cut to one driver's published specs. Pick the brand your subwoofer comes from.

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Last updated September 28, 2026