KICKER SoloXS L7XS Subwoofers Are Here: Meet the Biggest, Baddest Square Subs KICKER Has Ever Built
22nd May 2026
The biggest, nastiest square subs KICKER has ever built.
The new KICKER SoloXS L7XS lineup is not a normal subwoofer release. This is KICKER swinging for the fence with 12 inch and 15 inch square subwoofers designed for extreme excursion, ultra-deep bass, massive motor force, serious thermal management, and serviceability that actually makes sense for high-output builds.
Every model in this group is rated for 1500 to 3000 watts RMS, uses a 3 inch aluminum voice coil former with a 3.4 inch winding width, carries a huge 705 oz magnet assembly, and delivers 43.1mm of Xmax. These are built for serious daily systems, demo vehicles, SPL-minded builds, and customers who want bass equipment that looks and feels like it belongs in a different weight class.
This is not just more wattage. It is a full extreme-output platform.
KICKER built the SoloXS L7XS family to go beyond the already aggressive SoloX platform with more power, more stroke, and more Xmax. That matters because a subwoofer at this level is not judged by one number. It has to move serious air, survive high-power abuse, stay controlled at long stroke, manage heat, and be serviceable when the system is pushed hard.
Massive motor force
A 705 oz magnet assembly, 9.85 inch magnet diameter, 0.8 inch top plate thickness, and oversized ferrite motor structure give the SoloXS the kind of motor foundation needed for brutal excursion and heavy-stroke low-frequency output.
Long-stroke suspension
The extra-large dual-spider suspension and next-generation proprietary NBR surround are there to support long travel, keep the moving assembly under control, and help the sub stay composed when the enclosure and amplifier are doing real work.
Built for heat
KICKER Forced Air Cooling helps the SoloXS run cooler and last longer. In a 1500 to 3000 watt RMS subwoofer, thermal management is not a bonus feature. It is a requirement.
Service-ready by design
The field-replaceable recone assembly uses a surround compression system, bolt-on spider landing, alignment pins, and a no-glue replacement approach. That makes these monsters much more practical for serious users who actually push their systems.
Why the field-replaceable recone system is such a big deal.
High-output subwoofers live hard lives. They see huge power, heat, long excursion, demo sessions, competition abuse, and customer systems that are constantly being pushed to the edge. Traditionally, a failure in a woofer like this can mean downtime, glue work, careful alignment, and a repair process that is not exactly friendly in the field.
SoloXS changes that conversation. The pre-assembled recone assembly, alignment pins, bolt-on spider landing, and surround compression system are all about service speed and accuracy. For a shop, competitor, or serious bass customer, that means the subwoofer is not just huge. It is built with the reality of extreme bass ownership in mind.
Service features worth calling out
- Pre-assembled recone assembly
- No-glue recone replacement design
- Alignment pins for accurate service
- Bolt-on spider landing
- Surround compression system
Pick your weapon: 12 inch or 15 inch, 1 ohm or 2 ohm DVC.
The 12 inch models are built around the same core SoloXS engineering in a 3.0 cubic foot vented enclosure recommendation. The 15 inch models step up to a 5.0 cubic foot vented recommendation for even more low-frequency authority. Choose the impedance that works with your amplifier plan, then build the system around real electrical support, real enclosure design, and real installation work.
KICKER 52L7XS121
12 inch SoloXS L7XS, 1 ohm DVC
$1,399.99
The 1 ohm DVC 12 inch model is the compact monster of the group. It carries the same 1500 to 3000W RMS power rating, 43.1mm Xmax, 705 oz magnet assembly, 3 inch voice coil diameter, and field-serviceable SoloXS construction.
- Power1500 to 3000W RMS
- Frequency20 to 100 Hz
- Vented box3.0 cu ft at 31 Hz
- Weight97.10 lbs
KICKER 52L7XS122
12 inch SoloXS L7XS, 2 ohm DVC
$1,399.99
The 2 ohm DVC 12 inch version gives you the same extreme SoloXS hardware with a different wiring path for amplifier matching. It is still a 97 pound, long-stroke square subwoofer built for very high output.
- Power1500 to 3000W RMS
- Frequency20 to 100 Hz
- Vented box3.0 cu ft at 31 Hz
- Weight97.10 lbs
KICKER 52L7XS151
15 inch SoloXS L7XS, 1 ohm DVC
$1,499.99
The 15 inch 1 ohm DVC model is the heavy hitter for customers who want the bigger cone, deeper enclosure recommendation, and the full SoloXS statement piece. It is made for ultra-deep bass at very high volume.
- Power1500 to 3000W RMS
- Frequency18 to 100 Hz
- Vented box5.0 cu ft at 30 Hz
- Weight99.10 lbs
KICKER 52L7XS152
15 inch SoloXS L7XS, 2 ohm DVC
$1,499.99
The 15 inch 2 ohm DVC option brings the same massive square cone platform, 705 oz motor assembly, 43.1mm Xmax, Forced Air Cooling, and service-ready construction with 2 ohm DVC flexibility.
- Power1500 to 3000W RMS
- Frequency18 to 100 Hz
- Vented box5.0 cu ft at 30 Hz
- Weight99.10 lbs
The details that make these feel different.
A lot of subwoofers claim to be high power. The SoloXS L7XS backs it up with physical hardware you can see and feel: a cast-aluminum basket built for cooling, a custom rubber boot over the oversized ferrite magnet, a double-pressed pulp cone, proprietary NBR surround, dual high-strand tinsel leads, and power connection hardware meant for real current delivery.
Cone and surround
The square SoloXS cone platform uses a double-pressed pulp cone and proprietary NBR surround. That combination is built to support loud, musical bass while handling the violent motion expected from a 43.1mm Xmax driver.
Connection hardware
Each model includes a single 8 AWG push terminal plus a dual 4 AWG terminal block. That is the kind of connection hardware you expect on a woofer that is intended for serious power.
Basket and cooling
A max-cooling cast-aluminum basket and Forced Air Cooling system help manage the heat and abuse that come with 1500 to 3000 watts RMS of bass output.
Quick spec comparison.
| Model | Size | Impedance | Power | Frequency | Enclosure | Weight |
|---|---|---|---|---|---|---|
| 52L7XS121 | 12 inch square | 1 ohm DVC | 1500 to 3000W RMS | 20 to 100 Hz | 3.0 cu ft, 31 Hz | 97.10 lbs |
| 52L7XS122 | 12 inch square | 2 ohm DVC | 1500 to 3000W RMS | 20 to 100 Hz | 3.0 cu ft, 31 Hz | 97.10 lbs |
| 52L7XS151 | 15 inch square | 1 ohm DVC | 1500 to 3000W RMS | 18 to 100 Hz | 5.0 cu ft, 30 Hz | 99.10 lbs |
| 52L7XS152 | 15 inch square | 2 ohm DVC | 1500 to 3000W RMS | 18 to 100 Hz | 5.0 cu ft, 30 Hz | 99.10 lbs |
Ready to build something ridiculous?
The SoloXS L7XS lineup is for the customer who wants the biggest, baddest, most overbuilt square subwoofer KICKER makes. Choose your size, choose your impedance, and build the electrical, amplifier, and enclosure side around a subwoofer that is ready for extreme output.