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NEXtrend systems
Architectural sound · loading
Thunder / K-array Italy
Thunder KS4 I
The K-array Thunder-KS4 I is a compact, high-power active subwoofer featuring dual 18” drivers and a massive 4×2500W @ 4Ω Class-D amplifier with onboard DSP, built to anchor sound reinforcement systems while powering compatible passive loudspeakers from its integrated outputs.
Design Story
Developed as a scalable system core, the KS4 I pairs advanced DSP (grouping, parametric EQ, limiters, flexible routing, and up to 230 ms delay) with control via K-array Connect and fleet management through K-framework3. Its osKar embedded processing platform, symmetric-ported bass-reflex design, and polyurea-coated Finnish birch plywood cabinet are engineered for touring-grade reliability, finished in black/white or full RAL for seamless integration.
Giving You Ultimate Sound Control
Simply combining two or more subwoofers to obtain a configuration that guarantees cardioid diffusion even throughout the low frequencies promises to give you a cleaner sound on stage, minimise risk of acoustic feedback, and in general a greater control over sound design the way you want it.
Crafted for Heavy Touring
The Thunder Series subs are built with a choice of Finnish birch plywood so it lightweight and incredibly resistant, making it the perfect speaker for audio rentals.The new polyurea paint and the cataphoresis treatment for the front grill, further treated with powder coating, also give greater resistance to the harsh weather environments often experienced on the road.
Adaptable Even Off The Stage
Simply combining two or more subwoofers to obtain a configuration that guarantees cardioid diffusion even throughout the low frequencies promises to give you a cleaner sound on stage, minimise risk of acoustic feedback, and in general a greater control over sound design the way you want it.