Professional Series · Datasheet

X Series Enclosure Fits Dual Kicker Solo X 12" Subwoofer · Dual 12" Ported enclosure

Net volume
6.00 Cubic Feet
Tuning
31.0 Hz
Max mounting depth
10.125 Inches (Kicker Spec)
Cutout
11.062 Inches (Kicker Spec)
External dimensions
44.00 Inches W × 16.00 Inches H × 27.50 Inches D
Front baffle
Triple-Layer 2.25" MDF | Woofer Flush-Mounted In The Outer Layer
Buy at Audio IntensityFactory-direct, ships from Tullahoma
  • Alignment: 6.00 cu ft net vented at 31.0 Hz
  • Driver: Kicker Solo-Baric L7X 12 D2, 2000 W RMS, 31.2 mm Xmax, 41.60 Hz Fs
  • Build: Front-firing standard box, triple 2.25" baffle with the woofer flush-mounted in the outer layer, Kicker logo acrylic, dado joinery, 91.0 sq in slot port beside the woofer, internally braced
  • Cabinet: 44.00" W x 16.00" H x 27.50" D, 133 lb (estimated)

Spec of record

Technical specifications

SeriesProline X Professional
Driver-Specific FitmentKicker Solo-Baric L7X 12 D2 (Dual 2 Ohm)
Enclosure TypePorted | Front-Firing Standard Box
External Width44.00 Inches
External Height16.00 Inches
External Depth27.50 Inches
Internal Volume (Net)6.00 Cubic Feet
Port TypeVertical Slot Beside The Woofer | Front Exit | Internally Braced
Port Area91.0 Square Inches
Port Tuning (Fb)31.0 Hz
Design Power Basis3000 W RMS (1.5 x The Driver Rating)
Driver Fs41.60 Hz
Driver Qts0.506
Driver Qes / Qms0.543 / 7.275
Driver Vas18.360 Liters / 0.648 Cubic Feet
Driver Sd585.6 Square Centimeters
Driver Mms387.20 g
Driver BL25.87
Driver Re3.6 Ohm
Driver Xmax31mm (One-Way)
Driver Power Handling2000 Watts RMS
Driver Overall Diameter12.562 Inches (Kicker Spec)
Mounting Depth Required10.125 Inches (Kicker Spec)
Cutout Diameter11.062 Inches (Kicker Spec)
Flush Mount Recess13.500 Inches In The Outer Layer
Voice Coil ConfigurationDual 2 Ohm
MaterialLangboard Elite 3/4" MDF
JoineryDado Joinery (CNC-Cut), Flat Panels
Front Baffle ConstructionTriple-Layer 2.25" MDF | Woofer Flush-Mounted In The Outer Layer
Baffle Layers3
AcrylicGlossy Black Kicker Logo Insert, Outer Layer, Standard
Terminal CupProline X ABS/Carbon Fiber Composite | Back Panel, Terminal-Cup Side | 12g OFC Pre-Wired
DampingNone - Ships Dry. Polyfill Detunes A Ported Enclosure
Carpet FinishPlush Black
Shipping Weight143 lb
ShippingUPS Ground Parcel, Included In The 48 States
Bundle OptionsEnclosure Only (Bring Your Own Kicker Solo-Baric L7X 12)
Warranty2-Year Limited (Enclosure)
ManufacturedTullahoma, Tennessee, USA

Modelled response

Performance in this enclosure

Net airspace
6.00
cu ft
Tuning
31.0
Hz · Fb
Half power
26.5
Hz · F3, anechoic
Xmax at
10432
W RMS · 24 Hz subsonic
With NO filter
5060
W RMS · unfiltered
Port
35.0
m/s at the mouth · 3000 W

01Is this driver right for a ported box?

Efficiency bandwidth product places the motor before anything else is decided.

EBP = Fs ÷ Qes = 76.5
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 EBP 76.5
Kicker Solo-Baric L7X 12 D2 · EBP 76.5
Between 50 and 100 a driver takes either load, and the choice becomes one of priorities rather than of physics. The Kicker Solo-Baric L7X 12 D2 reads 76.5. Ported buys output and low-end reach around tuning; sealed buys a shallower rolloff below it. This cabinet takes the first trade.

02What the box does to it

6.00 cu ft net against a 18.4 L Vas, vented at 31.0 Hz.

Fb = 31.0 Hz  ·  F3 = 26.5 Hz  ·  passband ripple 2.61 dB
20 30 50 70 100 150 200 +6 +0 −6 −12 −18 −24 FREQUENCY · Hz LEVEL · dB −3 dB Fb 31.0
Kicker Solo-Baric L7X 12 D2 · Fb 31.0 Hz, F3 26.5 Hz
Anechoic, before any cabin gain, with the 24 Hz subsonic filter already applied. The vent takes over below 31 Hz and the cone stops doing the work there, which is what holds travel down at the bottom of the passband.

03Ported vs Sealed

No sealed comparison is shown for this driver.

A ported-versus-sealed chart is only worth reading against a sealed box someone would actually build: the one we make for the driver, or the one its maker recommends. Neither exists for the Kicker Solo-Baric L7X 12 D2 — we do not build a sealed enclosure for it and Kicker publish no sealed volume for it — so rather than compare this cabinet against itself stuffed and sealed, a box no one would build, the comparison is left out.

04The watts that reach Xmax (in this enclosure)

Travel scales with the square root of power, so there is one wattage that puts the cone exactly on Kicker's published 31.2 mm. The two traces are the same cabinet with the subsonic filter switched on and switched off.

PXmax = 10432 W with a 24 Hz subsonic  ·  5060 W with none  →  the filter is worth 2.1×
20 30 50 70 100 150 200 0 8 16 24 32 FREQUENCY · Hz CONE TRAVEL · mm PAST LINEAR TRAVEL · Xmax 31.2 mm 10432 W reaches Xmax here
10432 W · subsonic at 24 Hz, 24 dB/oct5060 W · no subsonic filterXmax 31.2 mm one-way, published
Each trace touches the limit and no further, because each is drawn at the exact power that puts the cone on 31.2 mm. With a 24 Hz subsonic that takes 10432 W, reached first at 26 Hz. Take the filter away and the same cabinet reaches 31.2 mm on 5060 W — the filter is worth 2.1× the safe power. A vent unloads the cone below tuning, so there is nothing holding it once the box stops loading: on a sealed build a subsonic filter is an improvement, here it is required equipment. The unfiltered trace is still rising where this chart stops at 20 Hz, so treat 5060 W as a bound rather than a floor. Every wattage on this page is a MECHANICAL limit, not an electrical one. It is the power at which the cone runs out of linear travel in this cabinet, and nothing more. What the voice coil can dissipate as heat is a separate ceiling set by the driver, not by the box — Kicker rate this one at 2000 W RMS, and that is the number that binds first here: heat stops you before travel does, so treat 2000 W as the ceiling and the travel figures above as headroom. Final wired impedance, amplifier output and how long you hold the level are all electrical questions this graph does not answer.

From the shop floor

Installer's take

This is the dual version of the L7X 12 box, same per-driver airspace and port as the single, doubled.

The port stays clean to 707 watts combined before the mouth starts moving faster than I want.

Wire the pair series-parallel off the two D2 coils, and check the resulting load against what your amplifier is rated for. Set your subsonic filter at 24 Hz.

It ships dry. Do not add polyfill to a ported box.

Before you order

Questions

Why is this enclosure tuned to 31.0 Hz?

F3 lands at 26.5 Hz on this pair, and passband ripple holds at 2.61 dB, comfortably inside the ceiling we hold new designs to. The port stays under the chuff threshold up to 707 W combined, above which the mouth velocity crosses Kicker's own reference. Set the subsonic filter at 24 Hz and leave it there below tuning. Tuning is chosen for in-car response rather than an anechoic curve: a vehicle adds roughly 12 dB per octave below about 45 Hz, and this tuning is where that sum comes out flattest across 25 to 60 Hz.

What makes this Professional rather than Performance Optimized?

The box. A Performance Optimized cabinet is cut to fit a trunk shape on a 1.5 inch double baffle; this one is a full-size front-firing box on a 2.25 inch triple baffle with the woofer flush-mounted in the outer layer, Kicker logo acrylic, and a port checked at 3000 W rather than the rating. It carries a 2 year warranty against 1.

Threaded inserts or a kit?

Threaded insert kit included for customer installation: 8 to 12 inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, allen key and gasket tape. One kit serves one woofer; a dual cabinet ships two.

Do I need a subsonic filter?

Yes, at 24 Hz, 24 dB per octave. Below tuning a vented box stops loading the cone and excursion runs away toward DC. With the filter in place this cabinet puts the Kicker Solo-Baric L7X 12 at 52 percent of its usable travel at 3000 W.

Would a sealed box be better for me?

Not one we can show you. We do not build a sealed enclosure for the Kicker Solo-Baric L7X 12 and Kicker publish no sealed volume for it, so the Performance Graphs tab carries no ported-versus-sealed chart: the only sealed box left to plot would be this cabinet stuffed and sealed, which nobody would build, and a comparison against it would tell you nothing you could buy. What a vented box gives up is the region below tuning, where the cone unloads and the 24 Hz subsonic filter takes over; around 31.0 Hz the vent carries the load and cone travel drops to its minimum, which no sealed alignment can do.

How does the front port work?

It is a vertical slot beside the woofer, 91.0 square inches, tuned to 31.0 Hz. The port stays under the chuff threshold up to 707 W; above that the air at the mouth moves faster than the 17 metres per second where a slot starts to chuff.

How heavy is it and how does it ship?

133 lb (estimated), 44.00" W x 16.00" H x 27.50" D external. It ships as a UPS parcel; the price includes shipping in the 48 states. Do not add polyfill; it ships dry on purpose.

Is the Solo-Baric L7X 12 included?

No. This is an enclosure only, cut for the Kicker Solo-Baric L7X 12 specifically: the 11.062 inch cutout and the 10.125 inch mounting depth allowance come from Kicker's published parameters. The baffle cutout is machined to the L7X square frame and is not cross-compatible with round drivers. Bring your own driver.

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