KS28 Reference High Power Subwoofer Dual 18

KS28 High-Power Dual 18" Subwoofer – Precision Bass Performance for Professional Audio Systems

The KS28 is a premium reference-grade subwoofer engineered for high-output low-frequency reproduction in demanding live sound environments. Designed with dual 18-inch drivers, this powerful bass module delivers deep, controlled rumble from 25Hz to 250Hz, making it ideal for touring sound reinforcement, fixed installations, and immersive audio applications where precision and impact are critical.

At the heart of the KS28 lies a robust power system capable of handling up to 4800W peak dynamic power (2400W per channel), ensuring reliable performance even under sustained high-level operation. With a maximum sound pressure level of 143 dB, this subwoofer provides exceptional clarity and authority at extreme volumes without distortion—perfect for large venues, outdoor festivals, or cinematic installations requiring impactful bass response.

Key features include two high-efficiency 18” neodymium magnet transducers with waterproof construction, offering superior damping and durability in humid or challenging conditions. The cabinet is built from rugged materials including chestnut gray RAL8019 polyurea composite paint for weather resistance, and an epoxy-coated steel mesh grille that protects internal components while maintaining acoustic transparency. Its 79kg (174 lb) weight ensures stability during heavy-duty use, while ergonomic handles on all sides simplify transport and setup.

Engineered for versatility, the KS28 supports both standard and cardioid directivity configurations via optional porting arrangements, allowing sound engineers to tailor dispersion patterns based on venue acoustics and audience layout. It includes two 4-pin Speakon inputs for secure, high-current connections, and integrated stacking accessories—including upper/lower stacking cards and L-shaped side runners—that enable safe, vertical array deployment without compromising structural integrity.

Whether used as part of a line array system or as a standalone unit for front-of-house or monitor applications, the KS28 excels in professional settings such as concerts, corporate events, theater productions, and mobile DJ setups. Its wide frequency range, consistent sensitivity of 105dB, and 4-ohm nominal impedance make it compatible with most modern digital amplifiers and mixing consoles, delivering seamless integration into existing sound systems.

Users consistently praise the KS28 for its tight control over low-end frequencies, minimal harmonic distortion, and ease of installation in complex setups. Many professionals note how its design enhances stage monitoring by reducing unwanted feedback and improving overall tonal balance across the full spectrum.

Common questions often revolve around compatibility with other speakers in a line array system, optimal placement for cardioid mode, and maintenance tips for long-term performance in outdoor environments. The durable build quality and protective features like ground runners and side guards help minimize wear from frequent setup and teardown, especially when used in touring scenarios.

In summary, the KS28 stands out as one of the most advanced dual 18-inch subwoofers available today—offering unmatched power, flexibility, and reliability for any serious audio engineer or event producer seeking top-tier bass performance in global markets.

Product Categories : Subwoofer