Kmax Linear Array
Kmax-28B
High power subwoofer
Features
• Low distortion, high power
• Kmax Line Array System
• For floor installation or overhead lifting
Application
• Large-scale mobile and fixed AV systems
• Major Concerts
• Large concert hall, theme park
• Gymnasiums, clubs, and more
High-performance, high-fidelity playback comes from this ultra-large linear array subwoofer system—designed with the renowned horn-style bass speaker. After hundreds of rigorous research studies, experiments, and development efforts in the field of advanced low-frequency loading technology, this product has undergone continuous refinement and enhancement, culminating in a meticulously crafted, state-of-the-art solution. This timeless and groundbreaking innovation delivers an exceptionally powerful performance, delivering deep, impactful, highly detailed, and pristine low-frequency sound that sets new standards in audio excellence. Its exceptional capabilities have already garnered significant attention and admiration from industry professionals across the globe. Among large-scale systems, the Kmax-28B stands out as the ultimate choice, offering unparalleled flexibility by allowing multiple speakers to be stacked seamlessly—perfectly addressing spatial challenges. Moreover, the unique horn-stack design amplifies low-frequency response, creating an electrifying, immersive, and passionately dynamic low-end experience that resonates deeply with audiophiles and sound engineers alike.
The Kmax series builds upon the insights of its predecessors while forging ahead, pushing linear array speaker technology into entirely new realms. It delivers natural, lifelike audio reproduction, boasts extended projection distances, exhibits superior wind resistance, and enables quicker and more convenient transportation and rigging. These remarkable achievements are inseparable from Realsound’s close collaboration with renowned musicians and acoustic experts. From the very beginning of its design, the Kmax series has been guided by a clear, well-defined vision. And within Realsound’s innovative lab, forward-thinking engineers have meticulously crafted these products to deliver exceptional, all-around performance.
The Kmax series continuously pushes the standards for sound reinforcement equipment forward. Our technological advantage stems from Realsound’s acoustic design corrections, which precisely address the nuances within the spectral structure—rather than relying on electronic methods to compensate for imperfections, we choose to focus our efforts on achieving an exceptionally smooth frequency response.
When the Kmax-28B speaker is used in conjunction with the Kmax-915's mid-to-high-frequency system, the resulting sound delivers rich, deep, powerful, yet precisely accurate bass.
The Kmax-28B speaker cabinet is constructed entirely from high-quality, 16-layer 25mm-thick wood plywood.
| Unit Configuration | 2 x 18-inch neodymium |
| Power | 2 x 1000 AES / 2 x 4000 Peak |
| Frequency Response | 25Hz-350Hz |
| Sensitivity | 99dB |
| MAX SPL | 143 dB (using the [Kmax-28B] preset) |
| Rated Impedance | 4Ω |
| Interface | 2 x Neutrik NL4 connectors |
| Dimensions (Height x Width x Depth) | 550mm x 1340mm x 700mm |
Weight | 80kg |
DA-5
DA-6
Kmax-28B Cart
Kmax-28B Suspension Arm
| Kmax-28B CAD |  |
Kmax-28B CAD.dwg
Kmax-28B.sync-conflict-20250908-161526-HV25EO4.doc
Application Cases
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Room 305, 12 Longxing Rd., Yuanshan Sub-dist., Longgang Dist., Shenzhen, China
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