/KS4IBlackrightsidefront.webp?version=2)
/KS4IBlackrightside.webp?version=2)
/KS4IBlackbackrightside.webp?version=2)
/KS4IBlackfront.webp?version=2)
SUBWOOFER
Thunder-KS4 I
The Thunder-KS4P I is a high-performance passive subwoofer designed to deliver powerful, deep, and controlled low-frequency reinforcement for professional audio applications, including live events, touring systems, and installations. It combines high output capability with precision and reliability.
At its core, the KS4P I features dual 18" neodymium magnet woofers, providing extended bass response down to 30 Hz. The system delivers up to 141 dB SPL, ensuring strong and consistent low-frequency performance even in large-scale environments.
Designed for seamless system integration, the KS4P I ensures accurate and controlled low-frequency reproduction with dedicated processing. Its 4-ohm impedance and 2800W peak power handling make it suitable for high-output configurations.
The enclosure is made of birch plywood with a durable polyurea coating, offering excellent resistance to wear and environmental stress. It includes removable rubber feet and is available in black, white, or custom RAL finishes.
With its robust build and high SPL capability, the KS4P I is a powerful and reliable solution for professional sound reinforcement systems.
Compatible plugins

Crestron
The plug-in that gives your Crestron Electronics full control on K-array amps is finally out there!

Crestron Home
Make K-array ultra-sleek and unique products get along with your Crestron Home Control System.

CONTROL 4
Integrating K-array's latest electronics with any Control4 system has become easy.

RTI
RTI offers solutions for Commercial Workspaces, Hospitality, Education, Houses of Worship, Residential, and more.

Savant
Integrating Savant with K-array electronics unlocks advanced control capabilities for a seamless user experience.

Symetrix
Symetrix control systems enable deep integration with K-array Kommander series electronics, providing full access to critical parameters for professional audio management.

Basalte
Easily integrate K-array amplifiers into Basalte Home for seamless control of your multiroom audio. Enjoy a perfectly minimal sound experience throughout your home.

WAVED
With WAVED, integrators can fully automate audio management across all zones, creating a truly operator-free system. This is made possible by WAVED’s Ambient Sensors, which intelligently control K-Array electronics for optimal performance.

NDI
K-array’s compatibility with NDI audio brings seamless integration into modern IP-based workflows. By leveraging NDI, users can transmit high-quality, low-latency audio over standard networks without complex cabling or additional hardware. This flexibility enables scalable installations, remote management, and interoperability with a wide range of devices, making K-array systems ideal for broadcast, live events, and corporate environments. The result is a streamlined, future-ready solution that combines exceptional sound performance with the efficiency of networked audio.
Compatible software
Related Accessories

K-HCDOLLY35 I
Dolly for KH3l, KH5l, KS4l

K-HCFLY35 I
Fly bar for KH5l, KH3l and KS4l

K-EXTFRAME4
Hardware to suspend KS4l (kit for 1 unit)

K-AMPCOVER II
Rain protection cover for Thunder and Mugello Mark I

K-COVERS4
Soft cover for KS4 I and KS4P I

K-POLE2
35mm extendable pole to attach to KS1I/KS2I/KS3I/KS4I subwoofers

K-EXTFRAME4W
Hardware to suspend KS4l (kit for 1 unit), white

K-POLE2X
35mm extendable pole to attach to KS1I/KS2I/KS3I/KS4I subwoofers, Custom RAL


