Proline X Subwoofer Enclosures Proline X - Professional Series Enclosure for Single Kicker Solo X 12"

Professional Box for Kicker Solo X 12" - Proline X|Proline X|Audio Intensity

Proline X

Kicker Solo X 12" Subwoofer Box - Professional Series Enclosure for Ultimate Bass Performance

SKU: Pro KIK 12 SX

Zero-Flex American Craftsmanship Built to handle 3000W+ RMS without rattling.

Maximum Performance Engineered Exclusively for the Kicker Solo X L7X

Precision Tuning Deep, authoritative bass that you feel in your chest.

$ 749.99

Hurry! Only 3 left in stock.

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Kicker Solo X 12" Subwoofer Box - Professional Series Enclosure for Ultimate Bass Performance

$ 749.99

Enclosure Type Ported

External Dimensions 32" W x 15" H x 21.5" D

Net Volume 3.0cu ft

Tuning Frequency 31Hz

Cutout Diameter Direct Fit

Max Mounting Depth 16"

Finish Plush Black Carpet with Lasered Acrylic Inserts

Power Rating 3000W RMS

INSTALLER'S TAKE

"Honestly, buying a Solo X and putting it in a cheap box is a waste of money. This driver has a huge Xmax (excursion) and needs significant port area to avoid 'chuffing' noises. The Proline X box is one of the few prefabs I've seen that actually respects the engineering of the sub. The cutout is perfectly sized for the L7X square frame, and the 22-inch depth gives the magnet assembly plenty of room for cooling. It's heavy—roughly 60-70 lbs empty—so make sure your trunk floor is ready."

Product Details

ProLine X Professional Series Enclosure for Kicker Solo X 12"

Precision-engineered SPL enclosure for Kicker's legendary Solo X L7X subwoofer (Black / Red theme)

Ported Enclosure

31Hz Tuning

3.0 cu ft

3000W RMS Rated

Handcrafted in USA

Engineered for Maximum SPL

The Proline X Professional Series enclosure is purpose-built to unlock the full potential of the Kicker Solo X L7X 12-inch competition subwoofer. Featuring CNC-machined MDF panels with dado joinery and internal bracing, this ported enclosure is designed for zero flex and distortion-free bass, even at extreme volume levels. The precision-tuned port geometry and 3.0 cubic foot internal volume are calibrated specifically for the Solo X's unique high-excursion design.

Enclosure Type

Ported

Net Volume

3.0 cu ft

Tuning Frequency

31 Hz

Max Mounting Depth

16"

Technical Specifications

Enclosure Type	Ported
External Dimensions	32" W × 15" H × 21.5" D
Net Internal Volume	3.0 cubic feet
Tuning Frequency	31 Hz
Cutout Diameter	Direct Fit for Solo X L7X 12"
Max Mounting Depth	16"
Power Rating	3000W RMS
Finish	Plush Black Carpet with Lasered Acrylic Inserts
Construction	CNC-Machined MDF with Dado Joinery
Manufacturing	Handcrafted in Tennessee, USA

Precision Port Design

Exact internal volume and port geometry designed to maximize the mechanical potential of the Solo X subwoofer.

Zero-Flex Construction

Machine-cut MDF panels with dado joinery and internal bracing ensure distortion-free bass under extreme power.

Note: This enclosure is specifically engineered for the Kicker Solo X L7X 12" subwoofer. Verify fitment and mounting depth before purchase.

Pricing

Professional Enclosure

$749.99

Availability

Hurry! Only 3 left in stock.

Why This Enclosure

Competition-grade construction: CNC precision with zero-flex internal bracing for SPL competitions.
Optimized for Solo X: 3.0 cu ft volume and 31Hz tuning unlock full mechanical potential.
Premium craftsmanship: Handcrafted in Tennessee with plush black carpet and lasered acrylic inserts.
Thermal management: Precision port system ensures optimal airflow and heat dissipation.

What's Included

Fully assembled ported enclosure (ready to install)
Direct-fit mounting for Kicker Solo X L7X 12"
Professional-grade terminal cup
Plush black carpet finish with custom lasered acrylic accents

Installation Tips

Verify enclosure dimensions fit your vehicle (32" W × 15" H × 21.5" D).
Confirm Solo X mounting depth (max 16" supported).
Secure enclosure to prevent movement under high SPL.
Use proper gauge wiring for 3000W RMS power handling.

Specifications

Net Volume	3.0 cu ft
Port Tuning	31 Hz
Port Area	~44.5 sq in
Cutout Diameter	Direct Fit
Dimensions	32" W x 15" H x 22.75" D
Material	High Density MDF (Triple Baffle Face)
Terminal	Heavy Duty with Stainless Hardware

Why Proline X?

Your subwoofer is only as good as the box it’s in. We combine advanced acoustic engineering with heavy-duty American craftsmanship to create enclosures that maximize output, clarity, and power handling—ensuring you get every decibel you paid for.