{"product_id":"l-acoustics-ks21-subwoofer-new","title":"L-Acoustics KS21 Subwoofer — New","description":"\u003ch2\u003eL-Acoustics KS21 High Power Subwoofer, 21\"\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003ePassive 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 four ergonomic handles, and panel corner stops for enclosure protection. The captive flush-fitting 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.\u003c\/p\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCoverage:\n\u003cul\u003e\n\u003cli\u003eEnclosure directivity: standard or cardioid configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eTransducers:\n\u003cul\u003e\n\u003cli\u003eLF transducer: 21\" neodymium cone driver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eAcoustics:\n\u003cul\u003e\n\u003cli\u003eNominal impedance: 8 Ω\u003c\/li\u003e\n\u003cli\u003eUsable 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)\u003c\/li\u003e\n\u003cli\u003e \u003c\/li\u003e\n\u003cli\u003eRMS power handling (Calculated using the mean impedance measured on the usable bandwidth): 467 W\u003c\/li\u003e\n\u003cli\u003eMaximum SPL: 138 dB Peak level at 1 m under half space conditions using pink noise with crest factor 4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003ePhysical data:\n\u003cul\u003e\n\u003cli\u003eAcoustical load: bass-reflex\u003c\/li\u003e\n\u003cli\u003eCabinet: premium grade Baltic beech and birch plywood\u003c\/li\u003e\n\u003cli\u003eDimensions (W, H, D): 762 mm, 576 mm, 620 mm \/ 30 in, 22.7 in, 24.4 in\u003c\/li\u003e\n\u003cli\u003eWeight (net): 49 kg \/ 108 lb\u003c\/li\u003e\n\u003cli\u003eConnectors: 2 × 4-point speakON\u003c\/li\u003e\n\u003cli\u003eIP: IP55\u003c\/li\u003e\n\u003cli\u003eFinish: dark grey brown Pantone 426 C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eControllers: \u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/shop.solotech.com\/en-uk\/products\/l-acoustics-la4x-amplified-controller?_pos=1\u0026amp;_sid=cea6e9b2f\u0026amp;_ss=r\u0026amp;_gl=1*1m1k6r0*_up*MQ..*_ga*MjAxMTA0NDI2Ni4xNzcyNzkyNjE1*_ga_VS20DCMC5L*czE3NzI3OTI2MTUkbzEkZzAkdDE3NzI3OTU5NzEkajI2JGwwJGgw\"\u003eL-Acoustics LA4X Amplified Controller\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/shop.solotech.com\/en-uk\/products\/l-acoustics-la12x-amplified-controller?_pos=1\u0026amp;_sid=020d18fcc\u0026amp;_ss=r\u0026amp;_gl=1*1u213kj*_up*MQ..*_ga*ODA2NDUyNDcwLjE3NzI3OTg3MDA.*_ga_VS20DCMC5L*czE3NzI3OTg3MDAkbzEkZzAkdDE3NzI3OTg3OTQkajYwJGwwJGgw\"\u003eL-Acoustics LA12X Amplified Controller\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"L-Acoustics","offers":[{"title":"Default Title","offer_id":48198356795476,"sku":"KS21","price":2097.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/2757\/2308\/files\/KS21.jpg?v=1794612787","url":"https:\/\/voltrivoo.myshopify.com\/products\/l-acoustics-ks21-subwoofer-new","provider":"VOLTRIVOO","version":"1.0","type":"link"}