L-Acoustics KS21iRAL 21 Inch High Power Compact Subwoofer - RAL Color - Install Version
Install-specific passive subwoofer with a high excursion, direct radiating 21 in transducer mounted in a bass-reflex tuned enclosure with laminar vents for increased LF efficiency. The enclosure cabinet is constructed of premium grade Baltic beech and birch plywood. The transducer front is protected by a coated steel grill and an acoustically transparent fabric. The enclosure integrates inserts for flush-fitting connecting plates and an optional acoustically transparent front screen. The four-point hardware allows for rigging and combining with other loudspeakers of the same family. Dedicated rigging accessories allow for flown or stacked configurations. Combining two or more elements with associated presets achieve omnidirectional or cardioid directivity patterns. Exclusively driven and protected by a proprietary amplified controller through a dedicated preset.
Features:
- Exceptional impact with high power to size ratio
- Clear low-frequency power with L-VENTS™
- Flown under the most stringent rigging conditions
- Designed to melt into any venue decor
Specifications:
- Coverage:
- Enclosure directivity: standard or cardioid configuration
- Transducers:
- LF transducer: 21" neodymium cone driver
- Acoustics:
- Nominal impedance: 8 Ω
- Usable bandwidth: 29 Hz - 83 Hz (-10 dB), 32 Hz - 71 Hz (-6 dB), 35 Hz - 60 Hz (-3 dB) / 31 Hz - 100 Hz (-10 dB), 35 Hz - 87 Hz (-6 dB), 40 Hz - 78 Hz (-3 dB)
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- RMS power handling (Calculated using the mean impedance measured on the usable bandwidth): 467 W
- Maximum SPL: 138 dB Peak level at 1 m under half space conditions using pink noise with crest factor 4
- Physical data:
- Acoustical load: bass-reflex
- Cabinet: premium grade Baltic beech and birch plywood
- Finish: custom RAL code on special order
- Dimensions (W, H, D): 752 mm, 569 mm, 602 mm / 30 in, 22.4 in, 23.7 in
- Weight (net): 46 kg / 101 lb
- Connectors: 1 × 4-point terminal block with push-in connection
- IP : IP55
- Coverage:
- Enclosure directivity: standard or cardioid configuration
- Transducers:
- LF transducer: 21" neodymium cone driver
- Acoustics:
- Nominal impedance: 8 Ω
- Usable bandwidth: 29 Hz - 83 Hz (-10 dB), 32 Hz - 71 Hz (-6 dB), 35 Hz - 60 Hz (-3 dB) / 31 Hz - 100 Hz (-10 dB), 35 Hz - 87 Hz (-6 dB), 40 Hz - 78 Hz (-3 dB)
- RMS power handling (Calculated using the mean impedance measured on the usable bandwidth): 467 W
- Maximum SPL: 138 dB Peak level at 1 m under half space conditions using pink noise with crest factor 4
- Physical data:
- Acoustical load: bass-reflex
- Cabinet: premium grade Baltic beech and birch plywood
- Finish: custom RAL code on special order
- Dimensions (W, H, D): 752 mm, 569 mm, 602 mm / 30 in, 22.4 in, 23.7 in
- Weight (net): 46 kg / 101 lb
- Connectors: 1 × 4-point terminal block with push-in connection
- IP : IP55
