The Thunder-KSCARDIO412P is a high-performance passive cardioid subwoofer designed to deliver powerful and controlled low-frequency reinforcement while significantly reducing rear sound radiation. Suitable for both professional live sound and fixed installations, it ensures focused bass coverage with minimal energy behind the system.

At its core, the KSCARDIO412P features four 12" neodymium magnet woofers, providing low-frequency response down to 35 Hz. The system delivers up to 138 dB SPL, ensuring consistent performance in demanding environments.

Its cardioid configuration enables effective rear attenuation, improving directivity and reducing unwanted stage spill. The system supports both mono-amp and bi-amp configurations, offering flexibility depending on the application.

The enclosure is made of birch plywood with a polyurea coating, designed to withstand intensive use and transport conditions. It is available in black or custom RAL finishes.

With its controlled dispersion and solid construction, the KSCARDIO412P is a reliable solution for professional sound reinforcement systems requiring both output and directivity control.