Proline X Performance Optimized Enclosures for Ground Zero Radioactive / Iridium
$ 229.99
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Ported, Standard Front-Firing
Ground Zero Subwoofer Boxes and Enclosures
Ported enclosures cut for Ground Zero subwoofers, CNC-machined in Tullahoma, Tennessee.
Ported, Standard Front-Firing
Ported Ground Zero enclosures in Performance Optimized and Professional Series, standard front-firing, with the port tuned per cabinet.
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Proline X - Ground Zero Hydrogen 10-inch Subwoofer Box
$ 389.99
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Ground Zero Enclosures at a Glance
Both cabinets are ported and standard front-firing. What separates them is the build standard and the driver each is cut for.
| Performance Optimized | Professional Series | |
|---|---|---|
| Alignment | Ported, tuned per cabinet | Ported, tuned per cabinet |
| Baffle | 1.5 in double | Heavier baffle and bracing |
| Orientation | Standard front-firing | Standard front-firing |
| Configuration | Single, multiple variants | Single |
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 Port Is Tuned, Not Just Cut
Port length and area together produce a specific tuning frequency for a specific Ground Zero driver, and the area is sized for the excursion that driver is rated to. A port too small for the excursion will make noise at volume, and no amount of tuning afterwards removes it.
A Listing Can Cover Several Variants
A cabinet here is offered in more than one driver size and configuration under a single product, so the variant you choose decides the enclosure you receive. Read the variant as well as the product title before ordering.
Performance Optimized Series
Cut to one driver on a 1.5 inch double baffle, with the port tuned for that driver rather than to a generic figure.
Cut to one driver
Professional Series
More baffle and more internal bracing, which a ported alignment rewards more than a sealed one does.
Cut to one driver
Other configurations
Everything is CNC-cut to order in Tullahoma. Ask if you need a size or configuration that is not listed.
Made to order
Baffle thickness and construction method vary by series. Each product page states how that cabinet is built and which Ground Zero model it was cut for.
Keep Reading
Supporting guides to help you design, build, and tune your system.
ApplicationPort Area Calculator
Check the port area a Ground Zero driver needs at its rated excursion. An undersized port makes noise no tuning will remove.
Read the guide
DecisionPorted Enclosures Compared
Ported enclosures compared side by side, for context on where these Ground Zero cabinets sit among the alternatives.
Read the guide
ApplicationSubwoofer Impedance Configurations
Every wiring configuration laid out, which matters because a Ground Zero listing here covers several coil and size variants.
Read the guide
ApplicationSubwoofer Airspace Calculator
Work out the net volume a Ground Zero driver needs, remembering a ported cabinet has to hold the port as well.
Read the guide
DecisionWhat Subwoofer Fits My Car
Working back from the space you have to whether a ported Ground Zero cabinet is realistic in it at all.
Read the guide
ExplainerCNC vs Hand-Cut
Why the cut matters on a ported Ground Zero cabinet, where the port has to hold its dimensions to hold its tuning.
Read the guideGround Zero Subwoofer Box Questions
Which Ground Zero subwoofers do these boxes fit?
Each cabinet is cut to the published parameters of a specific Ground Zero model, named on its product page. A listing here covers more than one driver size across its variants, so read the variant as well as the title.
Are these sealed or ported?
Both are ported, with the port cut and tuned as part of the design. Around the tuning frequency a ported cabinet produces more output than a sealed box of the same size; below it, output falls away steeply.
Why does a ported box need more space?
Because the port has to fit inside the cabinet and the alignment itself needs more net volume to work. If your space will not take the larger cabinet, a sealed enclosure in that space will outperform a ported one that was shrunk to fit.
What is the difference between the two builds?
One is a Performance Optimized cabinet on a 1.5 inch double baffle. The other is Professional Series, with heavier baffle and internal bracing work. Both are cut to the published parameters of the driver they name.
Can I modify the port to change the tuning?
We do not recommend it. Port length and area are cut to produce a specific tuning for a specific driver, and altering either leaves you with an alignment nobody designed.
Do you stock Ground Zero products?
We hold some Ground Zero stock. Availability on this range moves, so the product page shows the current position rather than this one.
Drivers Built to Match
10 Inch Subwoofers We 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
Prodigy Audio 10 inch Subwoofer | NB2 Series
$ 138.99 $ 145.99
Image Dynamics
Image Dynamics ID10 V4 10-inch Subwoofer
$ 139.99
Prodigy Audio
Prodigy Audio 10 inch Subwoofer | NB3 Series
$ 148.99 $ 165.99
Sony
Sony XS-W104ES Mobile ES Series 10" 4-ohm component subwoofer
$ 198.00 $ 299.99
Drivers Built to Match
12 Inch Subwoofers We 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.
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
Rainbow Audio SL-M2 2 channel micro amplifier
$ 89.99 $ 549.99
Rainbow
Rainbow Audio Dream 0.5K Mono Class D Amplifier
$ 89.99 $ 399.99
US Acoustics
US Acoustics Lisa | 4 Channel Class AB Amplifier | 4 x 50w
$ 159.99
US Acoustics
US Acoustics Wendy | 2 Channel Class AB Amplifier | 2 x 75w
$ 159.99
Last updated August 28, 2026