{"product_id":"stage15-db-audiotechnik-j-infra","title":"d\u0026b audiotechnik J-INFRA Cardioid Subwoofer | Stage Experts","description":"The d\u0026amp;b audiotechnik J-INFRA is a large-format cardioid subwoofer engineered to extend system bandwidth with precision and authority. Using three 21-inch drivers in a cardioid arrangement, it delivers powerful, musical low frequencies while significantly reducing rear radiation, improving onstage clarity and overall system intelligibility. With a maximum SPL of up to 144 dB and a rugged 152 kg build, it is purpose-built for high-demand touring, festival stages and expansive installs where headroom and control are critical.\n\nSeamlessly optimised for use with the d\u0026amp;b J-Series, the J-INFRA supports both ground-stacked and flown configurations, enabling coherent low-frequency arrays that adapt to diverse venue layouts. Its directional dispersion minimises spill into sensitive zones, helping meet strict noise management targets and enhancing audience experience. When driven by compatible d\u0026amp;b system amplifiers, dedicated processing ensures consistent tonal balance, reliable protection and predictable system behaviour across deployments.\n\nFrom large indoor arenas to outdoor main stages, the J-INFRA underpins modern sound reinforcement with deep, controlled low end and exceptional pattern control—ideal whenever scale, accuracy and repeatability 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\u003ed\u0026amp;b audiotechnik J-INFRA Cardioid Subwoofer | Stage Experts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSTAGE15.4.100.990\u003c\/strong\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"d\u0026b Audiotechnik","offers":[{"title":"Used Equipment","offer_id":57402668876153,"sku":null,"price":5736.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0288\/2260\/1776\/files\/IMG_5801_361d40fa-3736-402d-8fc4-8e2931f65be2.jpg?v=1781001204","url":"https:\/\/stage-experts.com\/products\/stage15-db-audiotechnik-j-infra","provider":"Stage Experts Ltd","version":"1.0","type":"link"}