Cut for the Audiofrog GB series

Audiofrog Subwoofer Boxes and Enclosures

Sealed enclosures cut for Audiofrog GB subwoofers, in wedge and down fire, CNC-machined in Tullahoma, Tennessee.

Proline X Performance Optimized Series sealed wedge enclosure, optimized for the Audiofrog GB series.

Cut for the Audiofrog GB series

Audiofrog's GB series is a sound-quality subwoofer line, and it is one of the very few whose published parameters survive every check we run against them. So these cabinets are built to Audiofrog's own recommended sealed volume rather than to a target we picked: 0.60 cubic feet net for the GB10 and 1.00 for the GB12, exactly the figures in their manual.

Every one is sealed, CNC-cut in Tullahoma, Tennessee, and supplied bare for a driver you already own. Most are rear-firing wedges; the dual 10 is also built as a down fire for a floor with no seat back to lean against. We do not stock Audiofrog drivers, so there is no loaded option here.

Sealed Audiofrog cabinets in stock in ten and twelve inch, wedge and down fire, single and dual, all Performance Optimized Series.

Langboard Elite MDF enclosures. 1-Year Warranty. Expert SQ-judge support. Built and shipped from Tullahoma, TN.

Driver parameters are taken from Audiofrog's published data and their GB Series Subwoofer Manual. We cut enclosures for Audiofrog subwoofers; we do not stock the drivers.

Decision Shortcut

Find Your Match

Curated picks matched to common build goals

Best Audiofrog Single 10"

Proline X PO 10-S W GB10 sealed wedge, front baffle with gloss black insert and pre-wired leads, 17 by 13 inches.

Proline X

Performance Optimized Wedge Sealed 10" Enclosure | Audiofrog GB10

Sealed wedge for one GB10 at Audiofrog's own 0.60 cubic feet. The smallest footprint in the range and the easiest to fit behind a seat.

$ 249.99

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Best Audiofrog Single 12"

Proline X PO 12-S W GB12 sealed wedge, front baffle with gloss black insert and pre-wired leads, 21.5 by 15 inches.

Proline X

Performance Optimized Wedge Sealed 12" Enclosure | Audiofrog GB12

Sealed wedge for one GB12 at 1.00 cubic foot. More cone area than the 10 without going to two drivers.

$ 269.99

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Best Audiofrog Dual 10"

Proline X PO 10D-S W GB10 sealed wedge, front baffle with gloss black insert and pre-wired leads, 27.75 by 15 inches.

Proline X

Performance Optimized Wedge Sealed Dual 10" Enclosure | Audiofrog GB10

Two GB10s in two fully separate chambers, each holding the same 0.60 cubic feet the single version does, so the alignment is unchanged.

$ 319.99

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Best Audiofrog Dual 12"

Proline X PO 12D-S W GB12 sealed wedge, front baffle with gloss black insert and pre-wired leads, 32 by 16 inches.

Proline X

Performance Optimized Wedge Sealed Dual 12" Enclosure | Audiofrog GB12

The most output in the range. Two GB12s, two sealed chambers, at the 32 inch width cap we build to.

$ 359.99

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Best for a Flat Load Floor

Proline X PO 10D-S DF GB10 sealed down fire enclosure, product photos pending. Placeholder graphic reading Photos Coming Soon.

Proline X

Performance Optimized Down Fire Sealed Dual 10" Enclosure | Audiofrog GB10

Two GB10s firing down, on a rectangular 30 by 15 inch footprint that keeps the top of the cabinet usable. Same 0.60 cubic feet per driver as the wedge, so the alignment is unchanged.

$ 299.99

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Audiofrog Enclosures by Model

Every cabinet here is a sealed Performance Optimized build. The alignment figures are computed from Audiofrog's published Thiele-Small parameters and span both coil versions.

CabinetDriverNet VolumeAlignmentExternal
Single 10 wedgeOne GB10D2 or GB10D40.60 cu ftQtc 0.82 to 0.85, F3 44 to 46 Hz17.03 x 13 x 8.10 to 12.83 in
Dual 10 wedgeTwo GB10D2 or GB10D40.60 cu ft per driverQtc 0.82 to 0.85, F3 44 to 46 Hz27.75 x 15 x 7.70 to 13.16 in
Dual 10 down fireTwo GB10D2 or GB10D40.60 cu ft per driverQtc 0.82 to 0.85, F3 44 to 46 Hz30 x 15 x 9.06 in
Single 12 wedgeOne GB12D2 or GB12D41.00 cu ftQtc 0.85 to 0.88, F3 43 to 44 Hz21.45 x 15 x 8.10 to 13.55 in
Dual 12 wedgeTwo GB12D2 or GB12D41.00 cu ft per driverQtc 0.85 to 0.88, F3 43 to 44 Hz32.00 x 16 x 9.60 to 15.42 in

Wedge or Down Fire

Only the dual 10 is offered both ways, and the two hold the same air, so this is a fitment decision rather than a sound one.

 WedgeDown Fire
Where it sitsAgainst the rear seat back, tapered to match its leanFlat on the trunk or cargo floor
Firing directionRearward into the trunk cavityDownward into the floor, or front firing with the feet left off
Footprint27.75 by 13.16 in at the base30 by 15 in, rectangular and flat topped
AlignmentQtc 0.82 to 0.85, F3 44 to 46 HzIdentical, same 0.60 cu ft per driver
Pick it whenThere is a seat back to lean against and you want the trunk floor clear in front of itThe load floor has to stay flat, or there is no seat back, or the build is a truck

Single or Dual

 SingleDual
Cone areaOne driverTwice the radiating area
Power handling500 watts RMS1000 watts RMS across the pair
ChambersOne sealed chamberTwo, fully divided, so neither cone loads against the other
AlignmentIdentical to the dualIdentical to the single, same volume per chamber
Pick it whenTrunk space or budget is the constraint, or one GB is already enough outputYou want the output and the space will take it

Built to the Manufacturer's Alignment, Not Ours

Most brand pages involve a judgement call, because most manufacturers publish an enclosure recommendation that does not agree with their own Thiele-Small data. Audiofrog is the exception. Their recommended sealed volumes land at a system Qtc between 0.82 and 0.88 across both sizes and both coil versions, which is a deliberate, consistent voicing rather than an accident.

That is a moderately damped alignment. It trades a little of the transient dryness a textbook 0.707 would give you for a slight lift through the midbass, and it is the character Audiofrog designed the driver around. Building to a different number would give you a different speaker.

Choosing Between Them

Start with the driver you own or intend to buy, because the cutout is not interchangeable between the GB10 and the GB12.

Then decide on one driver or two

A single cabinet is smaller in every dimension and lighter to carry, and one GB driver on 500 watts is already a serious subwoofer. A dual doubles the cone area and the power handling, and because each driver gets its own sealed chamber the pair behaves exactly as the single does rather than modulating each other's air load.

Watch the width on the dual 12

The dual GB12 is the largest cabinet in the range and it sits at our 32 inch width cap, with the extra volume taken up in depth instead. Measure the trunk opening before ordering it. The dual GB10 is under 28 inches wide and clears most sedan openings comfortably.

The coil version does not change the box

It changes what your amplifier sees. The GB series carries an impedance selection switch on the driver rather than bringing the coils out to the terminals, so the D2 version selects 1 or 4 ohms and the D4 selects 2 or 8. Set it before you mount the driver, because the switch faces the motor.

Which Cabinet Fits Your Driver

Match the size first and the driver count second. Both coil versions of a given size share a frame, a cutout and a mounting depth, so a cabinet cut for the GB10 fits the GB10D2 and the GB10D4 without modification.

The GB10 cabinets take a 9.252 inch cutout and clear the 6.26 inch mounting depth the driver needs. The GB12 cabinets take an 11.063 inch cutout and clear 6.654 inches. Those figures come off Audiofrog's own mounting template, which prints them in both millimetres and inches; where the two disagree slightly we cut to the larger, so a driver is never fighting an undersized hole.

Then pick the shape. A wedge has a vertical baffle and a tapered rear panel, sits against the rear seat back and fires into the trunk. The down fire dual 10 sits flat with the cones facing down and its feet ship uninstalled, so it can be run front firing instead. See the full wedge catalogue or the down fire catalogue for the same geometry in other brands.

Built to Audiofrog's Own Volume

Both sizes are cut to the sealed volume Audiofrog publishes, 0.60 cubic feet for the GB10 and 1.00 for the GB12. Their figure is a net volume, confirmed against their own enclosure drawings, so it goes in unchanged rather than being converted.

Impedance Is a Switch, Not a Wiring Job

The GB series does not bring its coils out to the terminals. A switch on the driver selects 1 or 4 ohms on the D2 version and 2 or 8 on the D4. On a dual cabinet set both drivers to the high position, because the terminal cup wires the two positions in parallel.

One Series, Two Sizes, Two Shapes

Everything here is a sealed Performance Optimized cabinet, in ten and twelve inch, with a single and a dual version of each. Nothing is ported, because the GB series is a sealed driver and a sealed box is what Audiofrog themselves recommend for it.

Most are rear-firing wedges. The dual 10 is also built as a down fire, on a flat 30 by 15 inch footprint, and it holds the same volume per chamber as the wedge does. The two are the same enclosure in two shapes, so that choice is about where the cabinet has to sit rather than how it performs.

The duals hold exactly the same volume per chamber as the singles too, so a GB10 dual publishes the same Qtc and the same F3 as a GB10 single. Choosing between them is a question of output and space, not of alignment.

Ten inch

Audiofrog GB10 Cabinets

The compact option

Cut around the GB10 at 0.60 cubic feet net per driver, which is the sealed volume Audiofrog publishes for it. Single and dual as a rear-firing wedge, and the dual again as a down fire, all three on the same alignment.

0.60 cu ft net per driver

Twelve inch

Audiofrog GB12 Cabinets

More displacement

Cut around the GB12 at 1.00 cubic foot net per driver, again Audiofrog's own figure. More cone area and more displacement in a rear-firing wedge that is wider and deeper rather than taller.

1.00 cu ft net per driver

One build standard

Performance Optimized Series

Every cabinet here

Every Audiofrog cabinet we cut is Performance Optimized: Langboard Elite MDF, a 1.5 inch double-layer front baffle, V-groove and dado joinery, threaded inserts at every mounting point and polyfill already installed.

1.5 in double baffle

Every cabinet on this page is Performance Optimized Series. Each product page states its own net volume, alignment and external dimensions.

Categories

Keep Reading

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

Audiofrog Subwoofer Box Questions

Which Audiofrog subwoofers do these boxes fit?

The GB series, in ten and twelve inch. A cabinet cut for the GB10 fits both the GB10D2 and the GB10D4, and a GB12 cabinet fits the GB12D2 and the GB12D4, because the coil versions share a frame, a cutout and a mounting depth.

Do you sell Audiofrog subwoofers too?

No. We cut enclosures for them but we are not an Audiofrog dealer, so every cabinet here ships bare for a driver you already own or buy elsewhere. If the driver is still an open decision, the subwoofers we do stock are worth a look.

Should I get the wedge or the down fire?

Whichever fits the space, because acoustically there is nothing between them. The down fire dual 10 holds the same 0.60 cubic feet per driver as the wedge dual and publishes the same Qtc and the same F3. The wedge leans against a rear seat back and fires into the trunk; the down fire sits flat on the floor with the cones facing down, and its feet ship uninstalled so it can be run front firing instead.

Why are these built to 0.60 and 1.00 cubic feet?

Because those are Audiofrog's own recommended sealed volumes, and unusually their recommendation agrees with their published Thiele-Small data. Both land at a system Qtc between 0.82 and 0.88, a consistent voicing across the range rather than a number that only works on one model.

Does the dual hold less air per driver than the single?

No. Each chamber in a dual cabinet holds exactly the same volume as the single version, so both publish the same Qtc and the same F3. The dual is a bigger cabinet because it holds two of that chamber, not because the chambers are compromised.

Are these sealed or ported?

Sealed, all of them. Audiofrog does publish a vented recommendation for the GB series, but the sealed alignment is what suits the driver's parameters and what fits a car. Every sealed cabinet we build ships with polyfill already installed.

What impedance will my amplifier see?

That depends on the switch on the driver rather than on any wiring you do. A single D2 gives 1 or 4 ohms and a single D4 gives 2 or 8. On a dual cabinet the terminal cup parallels the two positions, so set both drivers high: a D2 pair then presents 2 ohms and a D4 pair presents 4.

Drivers Built to Match

Subwoofers Spec'd for These Enclosures

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

Drivers Built to Match

Subwoofers Spec'd for These Enclosures

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

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 30, 2026