{"title":"L-Acoustics KS21","description":"","products":[{"product_id":"l-acoustics-ks21","title":"L-Acoustics KS21","description":"\u003cp\u003e4 x L-Acoustics KS21 in very good used condition.\u003c\/p\u003e\n\u003cp\u003ePrice listed is per unit. \u003c\/p\u003e\n\u003cp\u003eMore information on request.\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan\u003eAvailable at the beginning of 2025. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003eSE32299859\u003c\/p\u003e\n\u003c!----\u003e","brand":"Stage Experts Ltd","offers":[{"title":"Default Title","offer_id":41574231638064,"sku":"","price":4335.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/L-AcousticsKS21_2024-07-11T10_40_44.091Z.webp?v=1781789124"},{"product_id":"speaker-system-l-acoustics-ks21-cover","title":"SPEAKER SYSTEM L-ACOUSTICS KS21 + COVER","description":"\u003cp\u003eThis is a used \/ pre-loved item, we do our best to uphold the quality of all our used equipment.\n\u003c\/p\u003eProvided wheel dolly + cover","brand":"L-acoustics","offers":[{"title":"Default Title","offer_id":53480531657081,"sku":"","price":3816.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/Passive_speakers_audio_speaker-system-l-acoustics-ks21-cover_stage_experts-1.webp?v=1781805119"},{"product_id":"l-acoustics-ks21-including-cov-pla","title":"L-Acoustics KS21 including COV+PLA","description":"\u003cp\u003eThis is a used \/ pre-loved item, we do our best to uphold the quality of all our used equipment.\n\u003c\/p\u003eHello everyone,. We sell 12 pieces of L-Coustics KS21 including L-Coustics KS21-COV and L-Coustics KS21-Pla. The devices are in good condition. We are happy to send the devices worldwide. Rent the loudspeaker. As a member, you will receive access to our unbeatable deals early and no longer miss any offers! English: Hello Everyone,. We are selling a total of 12 l-acoustics ks21 included l-acoustics ks21-cov and l-acoustics ks21-pla. The Devices are in Good Condition. We are so happy to ship the devices worldwide. Loudspeaker Hire. As a member, you'll get Early access to our UNATABLE DEALS AND WON'T MISS OUT OUT on any more offers! .","brand":"Stage Experts Ltd","offers":[{"title":"Default Title","offer_id":55063208460665,"sku":"","price":4323.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/images_on_request_1323f8ab-3f96-41af-8702-6e11bb1bd7d1.webp?v=1781829428"},{"product_id":"l-acoustics-ks21-package","title":"L-acoustics KS21 Package","description":"\u003cp\u003eL-acoustics KS21 Package \u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8 × KS21\u003c\/li\u003e\n\u003cli\u003e1 × LA12X\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll equipment purchased new in 2025\u003c\/p\u003e\n\u003cp\u003eFor more details or enquiries, feel free to contact us.\u003c\/p\u003e\n\u003cp\u003eSE37139535\u003c\/p\u003e","brand":"Stage Experts Ltd","offers":[{"title":"Default Title","offer_id":56843105960313,"sku":null,"price":36600.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/L-acousticsKS21_d2df0356-bc7e-46fe-ab98-8870edbdb7c0.webp?v=1781869925"},{"product_id":"stage1-speaker-system-l-acoustics-ks21-cover","title":"L-Acoustics KS21 Subwoofer Package with Cover \u0026 Dolly","description":"The L-Acoustics KS21 Subwoofer Package supplies one compact, high-output 21-inch subwoofer complete with a fitted protective cover and a wheel dolly for smooth warehouse-to-venue moves. The KS21’s optimised vented design delivers fast, controlled low-frequency extension with ample headroom, ensuring tight, musical transients and seamless coupling with A Series, X Series and K Series tops. Cardioid configurations are supported to focus energy into the audience area, reducing onstage spill and improving clarity in reflective rooms. Full performance and protection are achieved when paired with L-Acoustics amplified controllers such as LA4X or LA12X for precise tuning and system management.\n\nBuilt for real-world touring and rental use, the rugged enclosure and included accessories speed up load-ins, simplify handling on site and protect the cabinet in transit and storage. Scalable and reliable, this KS21 package integrates effortlessly into existing inventories and fixed installs where articulate, impactful bass and efficient deployment are essential. Ideal for live music, theatre, corporate events and clubs seeking refined low end with a minimal footprint.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eKS21 subwoofer\u003c\/li\u003e\n  \u003cli\u003eFitted protective cover\u003c\/li\u003e\n  \u003cli\u003eWheel dolly\u003c\/li\u003e\n  \u003cli\u003eCover\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE1.3.100.928\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-ACOUSTICS","offers":[{"title":"Used Equipment","offer_id":57367068901753,"sku":null,"price":3928.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/I0037503_2NDHAND_a.webp?v=1781876591"},{"product_id":"stage4-ks21-sub-l-acoustics","title":"L-Acoustics KS21 Subwoofer – Compact 21-inch High Output","description":"The L-Acoustics KS21 is a compact, high-efficiency 21-inch subwoofer designed to extend system bandwidth with authority and precision. A high‑excursion driver, rigid low‑vibration enclosure and L‑Vent laminar ports work together to minimise turbulence and port noise, maintaining punch and articulation even at elevated SPL. At just 49 kg, it is straightforward to deploy and transport, with integrated fittings that support fast, consistent rigging for both rental and fixed installations.\n\nOptimised for use with L-Acoustics amplified controllers such as the LA4X and LA12X, the KS21 integrates seamlessly into wider systems. It supports standard and cardioid deployments, enabling symmetrical or asymmetrical low‑frequency directivity to suit venue constraints, reduce stage spill and improve audience clarity. Equally at home ground‑stacked or flown in arrays, it delivers tight, musical low end with the headroom demanded by modern productions.\n\nIdeal for touring, live music, theatres, clubs and corporate AV, the KS21 offers refined low‑frequency control in a compact footprint, making it a versatile choice wherever impactful, controlled bass is required.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eL-Acoustics KS21 Subwoofer – Compact, high-output 21-inch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE4.4.100.100\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-ACOUSTICS","offers":[{"title":"Used Equipment","offer_id":57367559045497,"sku":null,"price":4713.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/ks21-sub-l-acoustics.webp?v=1781886148"},{"product_id":"stage14-l-acoustics-ks21","title":"L-Acoustics KS21 Subwoofer – Compact High-Impact Deep Bass","description":"The L-Acoustics KS21 is a compact, high-output subwoofer engineered for tight, musical low-frequency reinforcement with exceptional control. Housing a premium 21-inch driver in an efficient bass-reflex enclosure, it seamlessly extends the bandwidth and headroom of L-Acoustics point source and line source systems, including the A Series and ARCS. Optimised presets on L-Acoustics amplified controllers ensure precise protection, phase-coherent integration and repeatable results across deployments.\n\nBuilt for touring and installations alike, the KS21 features robust construction, integrated rigging options and a compact footprint for flexible placement on stage, flown with appropriate accessories, or discreetly within visually sensitive spaces. When used in multiples, it supports directional and cardioid configurations to minimise stage spill and improve audience coverage, delivering impactful, consistent bass from show to show.\n\nFrom live music and theatre to corporate events and premium venues, the KS21 is a reliable choice where deep, controlled low end and streamlined deployment are essential.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eL-Acoustics KS21 Subwoofer – Compact High-Impact Bass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE14.3.100.690\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-Acoustics","offers":[{"title":"New Equipment","offer_id":63735111352697,"sku":null,"price":4242.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/Photo-21.08.25-12-24-10-_E2_80_93-_CE_BC_CE_B5_CE_B3_CE_AC_CE_BB_CE_B7_3be95c26-0f4c-4e3b-bc4f-029ce2e741fa.webp?v=1782014950"},{"product_id":"stage22-l-acoustics-ks21-21-pa-subwoofer","title":"L-Acoustics KS21 21-inch Subwoofer – Compact High Output","description":"The L-Acoustics KS21 is a compact, high-output 21-inch PA subwoofer designed for precise, musical low-frequency reinforcement. Delivering a powerful maximum SPL of 138 dB with extension down to 29 Hz, it provides deep, controlled bass that enhances impact without masking detail. Its single 21-inch driver is optimised for punch and definition, while the enclosure supports standard or cardioid deployment to reduce stage spill and tighten audience coverage. At just 49 kg, the KS21 offers an impressive output-to-size ratio, making it an efficient, scalable choice for modern touring productions and space-conscious installations alike. Built to L-Acoustics’ exacting standards, it integrates seamlessly into professional systems and arrays where consistent, articulate low end is critical. Ideal for live music, theatre, clubs, corporate events and houses of worship, the KS21 brings authority and clarity to your low-frequency mix while remaining easy to deploy and control. Choose it when you need tight, impactful bass performance without compromise.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eL-Acoustics KS21 21\" Subwoofer – Compact High-Output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE22.3.100.890\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-Acoustics","offers":[{"title":"New Equipment","offer_id":63768289444217,"sku":null,"price":4472.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/KS21_L-Acoustics_20_286_29.webp?v=1782015508"},{"product_id":"stage22-l-acoustics-ks21-subwoofer-l-acoustics","title":"L-Acoustics KS21 Subwoofers – 4x with Covers \u0026 Dollies","description":"A matched set of 4x L-Acoustics KS21 subwoofers from the original owner, complete with protective covers and transport dollies for safe, efficient touring. These units have only ever been run on genuine L-Acoustics system amplification and remain in excellent working order. Compact yet powerful, the KS21 delivers tight, musical low-frequency extension with the headroom and consistency demanded by professional sound reinforcement. This bundle adds carefully considered rigging accessories for rock-solid deployment: two custom KS21 outriggers and two custom KS21 stack frames integrate with the native rigging to support a distance pole or 4‑point truss, offering far greater stability than a simple flange. Four K\u0026amp;M 21329 M20 adapters are included for secure distance‑pole mounting. The result is a ready-to-deploy sub package that streamlines setup, improves stability, and protects your investment in transit. Ideal for touring packages, live music venues, corporate events and rental stock seeking impactful, controlled bass with fast turnaround.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4 x L-Acoustics KS21 subwoofers\u003c\/li\u003e\n  \u003cli\u003e4 x protective covers\u003c\/li\u003e\n  \u003cli\u003e4 x transport dollies\u003c\/li\u003e\n  \u003cli\u003e2 x custom KS21 outriggers\u003c\/li\u003e\n  \u003cli\u003e2 x custom KS21 stack frames\u003c\/li\u003e\n  \u003cli\u003e4 x K\u0026amp;M 21329 M20 adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE22.3.100.400\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-Acoustics","offers":[{"title":"Used Equipment","offer_id":63768365138297,"sku":null,"price":3909.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/3_20_283976_29.webp?v=1782016506"},{"product_id":"stage22-l-acoustics-ks21","title":"L-Acoustics KS21 Subwoofer – Ex-Demo with Dolly","description":"The L-Acoustics KS21 is a compact, high-impact 21-inch subwoofer engineered for precise, musical low-frequency reinforcement. This ex-demo unit is in excellent, lightly used condition and is supplied with a dolly and protective cover for efficient handling, transport and storage. Delivering remarkable output from a manageable footprint, the KS21 extends system bandwidth and headroom while preserving clarity and control, making it an ideal partner for compatible L-Acoustics tops. Its fast transient response and controlled dispersion provide tight, articulate bass that supports live music, theatre, corporate presentations and houses of worship without overwhelming the mix. Built for both touring and installation, the KS21 offers reliable, repeatable performance and smooth system integration within modern professional rigs. Included: one KS21 subwoofer with dolly and protective cover. A smart choice for rental companies, production houses and venues seeking professional-grade low-frequency performance with streamlined logistics and long-term durability.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eKS21 subwoofer\u003c\/li\u003e\n  \u003cli\u003eDolly\u003c\/li\u003e\n  \u003cli\u003eProtective cover\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE22.3.100.690\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-Acoustics","offers":[{"title":"Used Equipment","offer_id":63768974918009,"sku":null,"price":4242.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/Photo_2021.08.25_2C_2012_2024_2010_20_E2_80_93_20_CE_BC_CE_B5_CE_B3_CE_B1_CC_81_CE_BB_CE_B7.webp?v=1782024502"},{"product_id":"stage22-l-acoustics-ks21-subs","title":"L-Acoustics KS21 Subwoofers – Compact 21-inch Power","description":"The L-Acoustics KS21 is a compact, high-impact subwoofer engineered to deliver tight, musical low-frequency extension with exceptional headroom. Centred around a powerful 21-inch transducer in a carefully tuned enclosure, it provides fast, articulate punch that integrates seamlessly with L-Acoustics point source and line array systems. Flexible deployment options include standard or cardioid arrays for improved stage rejection and more even audience coverage. With optimised presets on L-Acoustics amplified controllers, setup is swift and consistent, while built-in protection ensures reliable performance event after event. The rugged, tour-ready build supports ground-stacked or flown configurations as part of scalable systems, making it a strong choice for live music, corporate events and fixed installations alike. Supplied with protective covers to keep the cabinets in top condition between shows, the KS21 offers the clarity, control and output required by modern productions. Ideal for rental companies, touring crews and venues seeking compact but powerful low-frequency reinforcement.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProtective covers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE22.3.100.850\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-Acoustics","offers":[{"title":"Used Equipment","offer_id":63769542066553,"sku":null,"price":4426.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/EDM_20PHOTOS_20-_20BRAVEO_20_2892_29.webp?v=1782045860"},{"product_id":"stage22-l-acoustics-ks21-inkl-covpla","title":"L-Acoustics KS21 Subwoofer with COV \u0026 PLA – Pre-owned Unit","description":"This listing is for one pre-owned L-Acoustics KS21 subwoofer, supplied with the original KS21-COV protective cover and KS21-PLA transport plate. The KS21 is a compact, high-output 21-inch sub designed for articulate, musical low-frequency reinforcement with an exceptional output-to-size ratio. It integrates seamlessly with L-Acoustics line array and point source systems, and supports standard or cardioid deployment for improved stage rejection and audience coverage. The included protective cover helps preserve the cabinet finish between shows, while the transport plate streamlines handling and truck packs for busy rental schedules. Ideal for touring, corporate AV, theatre, and fixed installations, the KS21 delivers tight, punchy bass and consistent performance in a manageable footprint. Pair with compatible L-Acoustics amplified controllers for optimal tuning, protection, and system efficiency. A smart addition to rental inventories and venue systems seeking impactful, controlled low end without unnecessary bulk. Supplied as a single unit with accessories, ready to integrate into professional loudspeaker setups.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eKS21-COV protective cover\u003c\/li\u003e\n  \u003cli\u003eKS21-PLA transport plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE22.3.100.890\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-Acoustics","offers":[{"title":"Used Equipment","offer_id":63769877643641,"sku":null,"price":4472.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/PHOTO-2025-03-12-11-59-32_203.webp?v=1782053545"},{"product_id":"stage22-l-acoustics-ks21-subwoofers","title":"L-Acoustics KS21 Subwoofer – Compact High-Output Bass","description":"The L-Acoustics KS21 is a compact, high-performance 21-inch subwoofer engineered for fast, musical low-frequency extension with impressive headroom. Its laminar vent design reduces turbulence and port noise, delivering tight, articulate bass that pairs seamlessly with modern line array and point source systems. Integration is straightforward via LA Controller presets, ensuring consistent, repeatable results across touring, corporate and installed applications. Flexible deployment options include ground-stacked, flown and cardioid configurations (with multiple enclosures) to minimise stage spill and optimise audience coverage. Built to withstand the demands of professional use, the KS21 balances output, portability and rigging efficiency to keep load-ins swift without compromising sound quality. These pre-owned units are in great condition and remain a dependable, rider-friendly choice for production companies, rental houses and venues seeking compact sub-bass that punches well above its size. Ideal where clarity, impact and controlled low-frequency directivity are essential, from live music and theatre to corporate presentations and high-spec installations.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eL-Acoustics KS21 Subwoofers – Compact High-Output Bass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE22.3.100.975\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"L-Acoustics","offers":[{"title":"Used Equipment","offer_id":63772458484089,"sku":null,"price":4569.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/SI-429250623706-SI-429250623706-1_e99455e4-d968-4708-a73a-200b04379d2a.webp?v=1782090479"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/collections\/collection_image_77df8289-ffaa-41d0-a02c-e5b69d7f91f5.jpg?v=1782397483","url":"https:\/\/stage-experts.com\/collections\/l-acoustics-ks21.oembed","provider":"Stage Experts Ltd","version":"1.0","type":"link"}