The KS28 Flyable Subwoofer is a high-output, passive 2x18 inch subwoofer designed for professional rental deployments where deep, controlled low frequency is required. The enclosure combines two high-excursion neodymium drivers in a bass-reflex cabinet with laminar vents to maximize low-frequency efficiency and minimize turbulence. The cabinet is built from premium Baltic beech and birch plywood and includes protective steel grill and acoustically transparent fabric.

Key Features

• Dual 18-inch neodymium transducers for powerful, extended LF performance.
• Selectable enclosure directivity, standard or cardioid, enabling system shaping for front-of-house or stage applications.
• High output capability, up to 142 dB peak at 1 m under half-space conditions with pink noise (crest factor 4).
• Usable bandwidth: 25 Hz to 110 Hz (-10 dB); 29 Hz to 96 Hz (-6 dB); 32 Hz to 76 Hz (-3 dB).
• RMS power handling: 1181 W (calculated using mean impedance on usable bandwidth), nominal impedance 4 Ω.
• Rugged, road-ready cabinet with six ergonomic handles, stacking runners, top tracks, and flush-fitting captive hardware for rigging.
• Compact footprint for its class, dimensions 1340 mm × 719 mm × 565 mm (52.8 in × 28.3 in × 22.2 in), net weight 79 kg (174 lb).

Use Cases

• Large-scale concerts and festivals where high SPL and controlled low-end directionality are required.
• Installed or temporary touring systems needing flown or ground-stacked sub arrays with cardioid or omnidirectional patterns.
• Clubs, theaters, and corporate events requiring accurate, powerful bass extension with predictable pattern control.

Included with your rental

• KS28 cabinet with protective grill, fabric, and captive rigging hardware.
• Stacking runners and alignment tracks where applicable.
• Connection: 1 × 4-point speakON input on each enclosure.
• Note: The KS28 is a passive loudspeaker and must be driven by the proprietary amplified controller and dedicated presets for protection and proper preset-based directivity. The amplifier/controller is available as a rental item and recommended for use with these cabinets.
• Currently available for rental from our West Coast inventory only.

Specifications

• Acoustical load: bass-reflex with laminar vents.
• Maximum SPL: 142 dB peak at 1 m (half-space, pink noise, CF 4).
• Impedance: nominal 4 Ω.
• Finish: dark grey brown, Pantone 426 C.

If you need help specifying amp/controller counts, cardioid presets, or transport and rigging planning for your event, ask our technical team when reserving the KS28 units.

We strive to provide impeccably maintained rental equipment for the entertainment industry that is prepped and ready for your event. Our experienced staff stands ready to help you with your lighting, video, rigging & production needs. Rental inventory availability may vary based on date and 4Wall location. In cases where your preferred item is unavailable, we'll do our best to suggest a suitable replacement.