Ported, 12 Inch

Ported 12 Inch Subwoofer Boxes

Ported cabinets for 12 inch drivers with the tuning frequency on every card, standard, down-fire and wedge. CNC-cut in Tullahoma.

Ported 12 inch Proline X subwoofer enclosure

Ported, 12 Inch

A ported 12 inch subwoofer box adds a tuned vent so the cabinet gives more output around its tuning frequency than the same driver sealed, for the same amplifier. On a driver-matched cabinet the port is sized to that driver's excursion and power, and every listing on this page states its tuning, because two cabinets of the same volume tuned five hertz apart are different products.

Twelve is the size where the choice of cabinet shape is widest: standard, down-fire and wedge each hold a real share here. CNC-cut in Tullahoma, Tennessee from Langboard Elite MDF on our own ShopSabre routers. Ported cabinets ship dry.

Ported 12 inch cabinets in stock today | single and dual | standard, down-fire and wedge | Performance, Performance Optimized and Professional | tuning stated per cabinet

Cut, assembled, carpeted and shipped from our own shop in Tullahoma, Tennessee. Stock counts on every card are shelf counts. Ported cabinets ship dry, with the tuning on the listing. Limited warranty runs by series from the original date of purchase: one year on Performance and Performance Optimized; two years on Professional.

Specified and written by Scott Welch, IASCA National and MECA World Champion, who runs the CNCs these are cut on. Figures come from our own build sheets and the driver manufacturers' published parameters.

Decision Shortcut

Find Your Match

Curated picks matched to common build goals

Best Value

Proline X Performance P12-P Ported Enclosure for 12-inch Subwoofers

Proline X

Proline X P12-P | Single 12" Ported Subwoofer Enclosure | V3

P12-P Single 12" Ported Subwoofer Enclosure. The lowest-priced ported 12 inch cabinet on the page, standard orientation, 1.5 cubic feet net.

$ 219.99

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Best for Trucks

Proline X PO 12-P W IDMAX ported wedge, front baffle with gloss black insert and pre-wired leads, 29 by 15 inches.

Proline X

Image Dynamics IDMAX12 V4 Ported 12" Wedge Enclosure | Proline X

Image Dynamics IDMAX12 V4. A wedge cabinet tapered to sit flush against a seat back, tuned to 31.5 Hz.

$ 379.99

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Shallowest Cabinet

Proline X PO 12-P W TW1 ported wedge, front baffle with gloss black insert and pre-wired leads, 30 by 15.5 inches.

Proline X

JL Audio 12TW1 Ported 12" Wedge Enclosure | Proline X

JL Audio 12TW1. 12.3 inches deep, the shallowest ported 12 inch cabinet in stock, for openings a standard box will not take.

$ 379.99

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Lowest Tuning

Proline X PO 12-P W P1 ported wedge, front baffle with gloss black insert and pre-wired leads, 30 by 15.5 inches.

Proline X

Rockford Fosgate P1S2-12 Ported 12" Wedge Enclosure | Proline X

Rockford Fosgate P1S2-12. Tuned to 28.5 Hz, the lowest on the page, for a driver whose free-air resonance earns it.

$ 379.99

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Sealed or Ported at 12 Inches

Same driver size, same shop, same materials. The alignment changes the cabinet, what the listing has to tell you and what you do at the amplifier. This page is the ported half; the sealed 12s are on the main 12 inch subwoofer box page.

Sealed and ported 12 inch Proline X cabinets as built.
Sealed 12 inchPorted 12 inch
Net volumeSmaller for the same driverLarger, with the port's own volume added
PolyfillInstalled on every buildNone. Ships dry so the tuning holds
Tuning statedNo, a sealed box has noneYes, on every listing
OutputFlat passband, gentle 12 dB per octave roll-offMore output around tuning for the same power
Subsonic filterAn improvementA requirement, set just under tuning
Pick it whenSpace is tight, music is wide, or you want a dualThe space is there and output per watt matters

Shared across both: Langboard Elite MDF at 48.5 lbs per cubic foot, 200 psi internal bond and 410,000 psi MOE, cut on ShopSabre routers in Tullahoma and carpeted in house.

Three Shapes, Three Series

The page spans standard, down-fire and wedge cabinets from the Performance, Performance Optimized and Professional lines, in single and dual configurations. Brands we cut ported 12 inch cabinets for include Rockford Fosgate, PowerBass, JL Audio, Kicker and Arc Audio; the card says whether we stock the driver as well, because the box is the product and it has to be right on its own.

Limited warranty runs by series from the original date of purchase: one year on Performance and Performance Optimized; two years on Professional.

The straight cabinet

Standard 12 inch, ported

single and dual, ported·From $219.99

Fires forward, stands on its base. The shape for a trunk with height or a cargo floor with room behind the seat.

Warranty 1 or 2 years by series

Fires into the floor

Down Fire 12 inch, ported

single, ported·From $329.99

Driver on the bottom baffle, on feet that set the clearance. The floor loads the cone and protects it from cargo.

1 year limited warranty on Performance Optimized

Leans on the seat back

Wedge 12 inch, ported

single, ported·From $379.99

Tapered on the rear panel to sit flush against a seat. The truck cabinet, and the shape that leads at the larger sizes.

1 year limited warranty on Performance Optimized

Prices are the lowest in stock for each shape today. Depth, net volume and, on ported builds, tuning are what change from card to card.

Categories

Keep Reading

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

Ported 12 Inch Box Questions

What tuning frequency are these 12 inch boxes?

Each listing states its own, and across this page tuning runs 28.5 to 39 Hz. That is deliberate: a vehicle adds roughly 12 dB per octave below about 45 Hz, so tuning near the driver's own resonance keeps the cone quiet where the port is doing the work instead of doubling up on what the cabin already does.

How big is a ported 12 inch subwoofer box?

Net volume on this page runs 1.1 to 3 cubic feet for a single-driver cabinet, quoted for the box, and every listing states its own. A ported cabinet is larger than a sealed one for the same driver because the port needs volume of its own and the alignment wants more air behind the cone.

Do these ship with polyfill?

No, and do not add any. Every sealed cabinet we build ships with polyfill, but damping material changes the volume a port is tuned against. Stuff a ported box and you move the tuning without shortening the port, which gives you a mistuned enclosure rather than a bigger-sounding one.

Do I need a subsonic filter?

Yes. Below its tuning frequency a ported box stops loading the cone and excursion runs away toward the driver's limits. Set the amplifier's subsonic filter just under the tuning stated on the listing. On a sealed build the same filter is an improvement; on a ported one it is a requirement.

Do you make dual ported 12 inch boxes?

Yes. This page carries dual cabinets alongside the singles. A ported dual shares one tuned chamber, so the stated tuning applies to both drivers.

What is the warranty on a ported 12 inch box?

Limited warranty runs by series from the original date of purchase: one year on Performance and Performance Optimized; two years on Professional. It covers structural failure and manufacturing defects for the original purchaser.

What tuning should I choose for rap, rock or EDM?

For hip-hop, trap and bass-heavy electronic music, the lower-tuned cabinets on this page, around 28.5 to 31 Hz, put the output where 808s and synth bass sit. For rock, metal and country, a higher tuning around 35 to 37.5 Hz keeps kick drum punch. For a mixed playlist, the middle of the range, about 32 to 35 Hz, is the safe answer. Either way the driver comes first: each driver-matched cabinet is tuned for the driver it names.

Subwoofer Boxes by Brand

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

Drivers Built to Match

12 Inch Subwoofers Spec'd for These Ported Boxes

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.

Prodigy Audio 1200 Watt Mono Block Amplifier NBM1200.1 - Prodigy Amplifier for car audio systems

Prodigy Audio

Prodigy Audio 1200 Watt Mono Block Amplifier | NBM1200.1

$ 272.99 $ 326.99
Wavtech Link5001Mini

Wavtech

Wavtech Link5001Mini

$ 299.99
US Acoustics Mike 1500w Monoblock Amplifier US Acoustics

US Acoustics

US Acoustics Mike 1500w Monoblock Amplifier

$ 329.99
Image Dynamics SQ600.1D 600W Mono Block Amplifier

Image Dynamics

Image Dynamics SQ600.1D 600W Mono Block Amplifier

$ 399.99

View all monoblock amplifier | 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 Dream 0.5K Mono Class D Amplifier

Rainbow

Rainbow Audio Dream 0.5K Mono Class D Amplifier

$ 89.99 $ 399.99
Rainbow Audio SL-M2 2 channel micro amplifier

Rainbow

Rainbow Audio SL-M2 2 channel micro amplifier

$ 98.99 $ 549.99
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 September 5, 2026