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KS28

Wednesday, May 25, 2016 1964
The KS28 is a reference subwoofer designed to extend the frequency response of large format systems. The KS28 features two high excursion, 18’’ direct radiating transducers mounted in a bass-reflex tuned enclosure. The optimized L-Vents laminar vented port reduce turbulence and port noise at high levels while also increasing LF efficiency.

The KS28 is a reference subwoofer designed to extend the frequency response of large format systems. The KS28 features two high excursion, 18’’ direct radiating transducers mounted in a bass-reflex tuned enclosure. The optimized L-Vents laminar vented port reduce turbulence and port noise at high levels while also increasing LF efficiency.
The KS28 operates from 25 Hz. The excursion capability of the transducer, combined with L-Vents contributes to deliver a high SPL, with low distortion. The KS28 can offer standard or cardioid directivity, by combining physical deployment and the suitable preset.
The KS28 is the first L-Acoustics enclosure to fully utilize the LA12X amplified controller power. The LA12X ensures advanced crossover functions, linearization and L-Drive protection of the transducers. Its onboard library offers standard and cardioid presets, each available with two low-pass filters to accommodate various coupling conditions and LF contour requirements.


High-Power Subwoofer

  • +3 dB SPL (vs. SB28)
  • 79 kg / 174 lbs
  • Fast and captive rigging
  • Exclusively driven by LA12X




SPECIFICATIONS
ISOCONTOUR
DIMENSIONS
Description Flyable subwoofer 2 × 18’’, amplified by LA12X
Low frequency limit (-10 dB) 25 Hz ([KS28_100])
Maximum SPL2 143 dB ([KS28_100])
Directivity Standard or cardioid
Transducers 2 x 18’’ neodymium, aluminium die cast basket
Acoustical load Bass-reflex enclosure, L-Vents
Nominal impedance 4 Ω
Connectors IN: 4-point speakON®
Rigging and handling Flush-fitting 2-point rigging system
6 ergonomic handles
2 ground runners
8 side runners
Weight (net) 79 kg / 174 lbs
Cabinet Premium grade beech and birch plywood
Front Steel grill with anti-corrosion coating
Acoustically neutral 3D fabric
Rigging components High grade steel
Finish Dark grey brown PANTONE® 426C