Kicker Solo X 15" L7X Competition Subwoofer
Ultra-Deep Bass Performance for Car Audio Enthusiasts and SPL Competitors
📦 Free Shipping, Fast Delivery
Every order includes:
- ✅ Free lifetime tech support
- ✅ 30-day price-drop protection
- ✅ 30-day returns
Brand: Kicker
Availability: ✅ In Stock
Product Information
The Kicker Solo X 15" L7X represents the pinnacle of competition-grade subwoofer engineering, delivering unmatched bass performance for serious car audio enthusiasts. This revolutionary subwoofer combines KICKER's legendary square cone technology with cutting-edge features designed to handle extreme power while maintaining crystal-clear sound quality.
Unparalleled Competition Performance
The Kicker Solo X 15 features a massive triple-stacked ferrite magnet system surrounding a hyper-extended pole piece, creating an enormous linear magnetic field that produces ultra-deep bass even at maximum volume levels. With its high-excursion design and 2000-watt RMS power handling, this subwoofer dominates both SPL competitions and daily listening applications.
Advanced Cooling and Durability
KICKER's proprietary Forced Air Cooling™ technology ensures optimal thermal management under extreme conditions, allowing the Solo X 15 to maintain peak performance while extending operational lifespan. The field-replaceable recone kit system means your investment is protected – simply replace the cone assembly without gluing when needed, getting you back to thumping bass in minutes rather than days.
Professional Installation Ready
The unique dual terminal design accepts up to 8 AWG wiring with spring-loaded connections and dual terminal blocks, making both series and parallel wiring configurations effortless for professional installers. The cast-aluminum basket and UV-resistant Santoprene surround ensure long-term reliability in any vehicle environment.

Specifications

Features:
Product Demo Video

Kicker Solo X 10" Subwoofer Box - Professional Series Enclosure for Compact High-Performance Bass
$ 499.99
View Product
F-150 Behind Seat Single 10" (2015-2023) Loaded Subwoofer Enclosure – Kicker CompRT 10
$ 649.99
View Product
F-150 Behind Seat Single 10" (2024-2025) Loaded Subwoofer Enclosure – Kicker CompRT 10
$ 699.99
View ProductEvery Kicker Solo X 15" L7X Competition Subwoofer ships with a detailed factory owner’s manual that covers wiring, enclosure recommendations, specifications, and safe operating practices. This document is the official reference for setup and maintenance, ensuring you get the most performance and longevity out of your subwoofer.
We recommend reviewing the manual before installation to:
- Confirm the correct wiring configuration for your voice coil option (Dual 1Ω or Dual 2Ω).
- Review enclosure guidelines to match the driver’s performance potential.
- Understand safe power handling and gain-setting practices to protect your investment.
Keeping this manual handy ensures you have quick access to factory specifications and diagrams, making it easier to fine-tune your system or service the subwoofer when needed.
Performance & Tools
EBP Calculator
Choosing the right enclosure for your subwoofer isn’t guesswork — it’s science. The Efficiency Bandwidth Product (EBP) is a simple calculation that uses a driver’s Fs (resonance frequency) and Qes (electrical Q) to determine whether it performs best in sealed, ported, or both types of boxes.
- EBP under 50 → Works best in sealed enclosures for tighter, more controlled bass.
- EBP over 100 → Better suited for ported designs where efficiency and output are the priority.
- EBP between 50–100 → Flexible enough to perform well in either design, depending on system goals.
Use our interactive calculator below to compare subwoofers, see where each model falls, and make an informed decision on the best enclosure type for your setup.
Efficiency Bandwidth Product (EBP)
Fs (Hz): 36.3
Qes: .613
Lower EBP → Sealed. Higher EBP → Ported.
Xmax (mm): 31.25mm
Mounting Depth (inches): 11.625"
Customer Reviews
Frequently Asked Questions
What amplifier power do I need for the Kicker Solo X 15?
What size enclosure works best with the Solo X 15?
What is Forced Air Cooling™ Technology, and why is it important?
How does the dual-spider suspension system improve performance?
Is the SoloX L7X suitable for sealed or ported enclosures?
How does the subwoofer handle extreme bass levels?
What makes the SoloX L7X different from other 15-inch subwoofers?
Recommended for You
Articles

Enhance Your Ride: Best Car Sub for Sound Quality

Worst Subwoofer Brands: Complete Guide to Avoid Low-Quality Bass

Top Picks: Best Car 12 Inch Subwoofer for Unmatched Audio Quality
