{"id":43,"date":"2020-01-06T18:31:19","date_gmt":"2020-01-06T18:31:19","guid":{"rendered":"http:\/\/blogs.qsc.com\/cinema\/?p=43"},"modified":"2026-03-24T14:57:24","modified_gmt":"2026-03-24T21:57:24","slug":"free-loading","status":"publish","type":"post","link":"https:\/\/blogs.qsc.com\/cinema\/es\/2020\/01\/06\/free-loading\/","title":{"rendered":"Free Loading"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-300x248.png\" alt=\"Subwoofer_boundaryLoading\" width=\"300\" height=\"248\" class=\"alignleft size-medium wp-image-44\" srcset=\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-300x248.png 300w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-768x635.png 768w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-1024x846.png 1024w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-250x207.png 250w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-550x455.png 550w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-800x661.png 800w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-218x180.png 218w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-363x300.png 363w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-605x500.png 605w, https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading.png 1653w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Take advantage of free acoustical power: always place subwoofers on the floor behind the screen \u2013 NOT on a platform with the screen loudspeakers. Floor-positioned subwoofers take advantage of \u201chalf-space\u201d loading, which increases radiated power by about 3 dB, WITHOUT adding any extra amplifier power. Even better: place the subwoofers on the floor AND push them all the way back against the solid wall behind the screen. That is called \u201cquarter space\u201d loading, and results in about 6 dB greater SPL, without using a larger amplifier. The very low frequencies produced by the subwoofers have no problem going right through any draping or masking below the screen.<\/p>\n\n\n<p><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Take advantage of free acoustical power: always place subwoofers on the floor behind the screen \u2013 NOT on a platform with the screen loudspeakers. Floor-positioned subwoofers take advantage of \u201chalf-space\u201d loading, which increases radiated power by about 3 dB, WITHOUT adding any extra amplifier power. Even better: place the subwoofers on the floor AND push &hellip; <a href=\"https:\/\/blogs.qsc.com\/cinema\/es\/2020\/01\/06\/free-loading\/\">Read More<\/a><\/p>","protected":false},"author":30,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-43","post","type-post","status-publish","format-standard","hentry","category-tech-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Free Loading - QSC Cinema Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.qsc.com\/cinema\/es\/2020\/01\/06\/free-loading\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Free Loading - QSC Cinema Blog\" \/>\n<meta property=\"og:description\" content=\"Take advantage of free acoustical power: always place subwoofers on the floor behind the screen \u2013 NOT on a platform with the screen loudspeakers. Floor-positioned subwoofers take advantage of \u201chalf-space\u201d loading, which increases radiated power by about 3 dB, WITHOUT adding any extra amplifier power. Even better: place the subwoofers on the floor AND push &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.qsc.com\/cinema\/es\/2020\/01\/06\/free-loading\/\" \/>\n<meta property=\"og:site_name\" content=\"QSC Cinema Blog\" \/>\n<meta property=\"article:published_time\" content=\"2020-01-06T18:31:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-24T21:57:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1653\" \/>\n\t<meta property=\"og:image:height\" content=\"1366\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Mark Mayfield\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Mayfield\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/2020\/01\/06\/free-loading\/\",\"url\":\"https:\/\/blogs.qsc.com\/cinema\/2020\/01\/06\/free-loading\/\",\"name\":\"Free Loading - QSC Cinema Blog\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/2020\/01\/06\/free-loading\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/2020\/01\/06\/free-loading\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-300x248.png\",\"datePublished\":\"2020-01-06T18:31:19+00:00\",\"dateModified\":\"2026-03-24T21:57:24+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/#\/schema\/person\/1a5151cfb1cd3413215688da1824a4ef\"},\"breadcrumb\":{\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/2020\/01\/06\/free-loading\/#breadcrumb\"},\"inLanguage\":\"es-ES\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.qsc.com\/cinema\/2020\/01\/06\/free-loading\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es-ES\",\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/2020\/01\/06\/free-loading\/#primaryimage\",\"url\":\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-300x248.png\",\"contentUrl\":\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2019\/12\/Subwoofer_boundaryLoading-300x248.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/2020\/01\/06\/free-loading\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/blogs.qsc.com\/cinema\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Free Loading\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/#website\",\"url\":\"https:\/\/blogs.qsc.com\/cinema\/\",\"name\":\"QSC Cinema Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blogs.qsc.com\/cinema\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es-ES\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/#\/schema\/person\/1a5151cfb1cd3413215688da1824a4ef\",\"name\":\"Mark Mayfield\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es-ES\",\"@id\":\"https:\/\/blogs.qsc.com\/cinema\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/fb5b28d9f3ec4ace25db8f608a1169e89f1aa941d97ff9e63710f435cf4c7179?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/fb5b28d9f3ec4ace25db8f608a1169e89f1aa941d97ff9e63710f435cf4c7179?s=96&d=mm&r=g\",\"caption\":\"Mark Mayfield\"},\"description\":\"Mark began his audio career in 1979 as a recording engineer working in studios in several major cities. His role expanded to include pro audio systems sales, design, and installation. His cinema experience includes market development and product marketing for several major audio systems manufacturers, including Bose, JBL Professional, and Eastern Acoustic Works, where he managed cinema sales and marketing. He\u2019s also spent 10 years as editor of several prominent pro AV technical trade publications. Mark is on the Board of Directors of the International Cinema Technology Association (ICTA), and has been adjunct faculty member and consultant to InfoComm International, and has provided marketing consulting services for many leading equipment manufacturers. Mark is currently responsible for all marketing programs for QSC Cinema, including advertising, sales support and training materials, trade shows, PR, and web. 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