{"id":2586,"date":"2021-05-06T19:14:34","date_gmt":"2021-05-07T02:14:34","guid":{"rendered":"https:\/\/blogs.qsc.com\/systems\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/"},"modified":"2022-07-13T06:23:11","modified_gmt":"2022-07-13T13:23:11","slug":"all-subwoofers-are-not-created-equal","status":"publish","type":"post","link":"https:\/\/blogs.qsc.com\/systems\/fr\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/","title":{"rendered":"All Subwoofers Are Not Created Equal"},"content":{"rendered":"<div class=\"trp_language_switcher_shortcode\">\n<div class=\"trp-language-switcher trp-language-switcher-container\" data-no-translation>\n    <div class=\"trp-ls-shortcode-current-language\">\n        <a href=\"#\" class=\"trp-ls-shortcode-disabled-language trp-ls-disabled-language\" title=\"Fran\u00e7ais\" onclick=\"event.preventDefault()\">\n\t\t\t Fran\u00e7ais\t\t<\/a>\n    <\/div>\n    <div class=\"trp-ls-shortcode-language\">\n                <a href=\"#\" class=\"trp-ls-shortcode-disabled-language trp-ls-disabled-language\"  title=\"Fran\u00e7ais\" onclick=\"event.preventDefault()\">\n\t\t\t Fran\u00e7ais\t\t<\/a>\n                    <a href=\"https:\/\/blogs.qsc.com\/systems\/fr\/wp-json\/wp\/v2\/posts\/2586\" title=\"English\">\n             English        <\/a>\n\n            <a href=\"https:\/\/blogs.qsc.com\/systems\/fr\/wp-json\/wp\/v2\/posts\/2586\" title=\"Deutsch\">\n             Deutsch        <\/a>\n\n            <a href=\"https:\/\/blogs.qsc.com\/systems\/fr\/wp-json\/wp\/v2\/posts\/2586\" title=\"Espa\u00f1ol\">\n             Espa\u00f1ol        <\/a>\n\n            <a href=\"https:\/\/blogs.qsc.com\/systems\/fr\/wp-json\/wp\/v2\/posts\/2586\" title=\"English (UK)\">\n             English (UK)        <\/a>\n\n        <\/div>\n    <script type=\"application\/javascript\">\n        \/\/ need to have the same with set from JS on both divs. Otherwise it can push stuff around in HTML\n        var trp_ls_shortcodes = document.querySelectorAll('.trp_language_switcher_shortcode .trp-language-switcher');\n        if ( trp_ls_shortcodes.length > 0) {\n            \/\/ get the last language switcher added\n            var trp_el = trp_ls_shortcodes[trp_ls_shortcodes.length - 1];\n\n            var trp_shortcode_language_item = trp_el.querySelector( '.trp-ls-shortcode-language' )\n            \/\/ set width\n            var trp_ls_shortcode_width                                               = trp_shortcode_language_item.offsetWidth + 16;\n            trp_shortcode_language_item.style.width                                  = trp_ls_shortcode_width + 'px';\n            trp_el.querySelector( '.trp-ls-shortcode-current-language' ).style.width = trp_ls_shortcode_width + 'px';\n\n            \/\/ We're putting this on display: none after we have its width.\n            trp_shortcode_language_item.style.display = 'none';\n        }\n    <\/script>\n<\/div>\n<\/div>\n<p>How are cinema subwoofers different from professional audio subwoofers?<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2021\/05\/GP218-SB2180-image-1024x496.png\" alt=\"\" class=\"wp-image-1784\" width=\"512\" height=\"248\"\/><\/figure><\/div>\n\n\n\n<p>Superficially, subwoofers for cinema and for professional audio applications may seem quite similar.&nbsp;While both are often big black boxes with dual 18\u201d subwoofers, there are many differences due to the specific needs of each application.&nbsp;Let\u2019s look at some of the differences between a cinema subwoofers, like the <a href=\"https:\/\/www.qsys.com\/cinema\/products\/loudspeakers\/subwoofers\/sb-7218\/\">QSC SB-7218<\/a> and pro audio subwoofers, like our <a href=\"https:\/\/www.qsys.com\/live-sound\/products\/loudspeakers\/passive-subwoofers\/gp-series\/gp218-sw\/\">GP218-sw<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The Acoustical Difference<\/h3>\n\n\n\n<p>From an acoustic performance perspective, cinema subs are designed to play lower bass than the usual pro audio subwoofer due to the extended low frequency sound effects created by filmmakers.&nbsp;Getting deeper bass requires a number of tradeoffs that aren\u2019t ideal for pro audio use.&nbsp; <\/p>\n\n\n\n<p>As frequency goes down, the cone excursion increases dramatically.&nbsp;This means that cinema subwoofers run out of mechanical cone excursion at much lower power levels than typical pro audio subwoofers. For this reason, in a cinema application, its common to use more subwoofers powered by smaller amplifiers to improve performance, not excessive power.&nbsp;That could mean Premium Large Format cinemas have up to as many as eight QSC SB-7218 dual 18\u201d subwoofers.&nbsp;<\/p>\n\n\n\n<p>Extended bass performance usually requires a larger box volume. This is not a big deal for cinema subwoofers that are shipped one time and set up out of view in a large room. However, smaller is better for subwoofers trucked to different sites every day or that need to fit in to a small space. Since they have to go behind the screen and curtains, the most critical dimension for cinema subwoofers is depth.&nbsp;Height and width are rarely an issue, so the larger box volume or use of more subwoofers can be easily accommodated.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What Features to Consider<\/h3>\n\n\n\n<p>As far as more practical features, cinema subwoofers differ quite a bit from professional audio subwoofers.&nbsp;Since a multiplex uses a lot of subwoofers, low cost is critical.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2021\/05\/sub-behind-screen-1828-wide-1024x359.jpg\" alt=\"\" class=\"wp-image-1785\" width=\"512\" height=\"180\"\/><\/figure><\/div>\n\n\n\n<p>Since the cinema subwoofers are installed one time, they do not have handles that are typically found on pro audio subwoofers. Cinema subs are installed out of sight behind screens or curtains, so there is no need for grills or attractive paint finishes.&nbsp;They are typically painted flat black, do not have logos and use black hardware to prevent any reflections showing through the screen perforations during the movie.<\/p>\n\n\n\n<p>In addition, they use lower cost MDF for the cabinet instead of birch plywood.&nbsp;MDF is quite dense and works great acoustically, but it can\u2019t handle the bumps and impacts that portable subwoofers need to endure. MDF is also more susceptible to water damage, but since cinema subwoofers are never hauled in and out of trucks in the rain, it\u2019s not really an issue.&nbsp;Just like Gremlins, don\u2019t get them wet.<\/p>\n\n\n\n<p>QSC subwoofers are amazing when properly applied.&nbsp;Using the right product for the right application will result in awesome performance and reliability.&nbsp;Trying to overpower a cinema subwoofer and not using enough will only result in blown loudspeakers.&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>How are cinema subwoofers different from professional audio subwoofers? Superficially, subwoofers for cinema and for professional audio applications may seem quite similar.&nbsp;While both are often big black boxes with dual 18\u201d subwoofers, there are many differences due to the specific needs of each application.&nbsp;Let\u2019s look at some of the differences between a cinema subwoofers, like &hellip; <a href=\"https:\/\/blogs.qsc.com\/systems\/fr\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/\">Read More<\/a><\/p>","protected":false},"author":31,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[28],"class_list":["post-2586","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-german"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>All Subwoofers Are Not Created Equal - Q-SYS<\/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\/systems\/fr\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"All Subwoofers Are Not Created Equal - Q-SYS\" \/>\n<meta property=\"og:description\" content=\"How are cinema subwoofers different from professional audio subwoofers? Superficially, subwoofers for cinema and for professional audio applications may seem quite similar.&nbsp;While both are often big black boxes with dual 18\u201d subwoofers, there are many differences due to the specific needs of each application.&nbsp;Let\u2019s look at some of the differences between a cinema subwoofers, like &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.qsc.com\/systems\/fr\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/\" \/>\n<meta property=\"og:site_name\" content=\"Q-SYS\" \/>\n<meta property=\"article:published_time\" content=\"2021-05-07T02:14:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-07-13T13:23:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2021\/05\/GP218-SB2180-image-1024x496.png\" \/>\n<meta name=\"author\" content=\"Barry Ferrell\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Barry Ferrell\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.qsc.com\/systems\/es\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/\",\"url\":\"https:\/\/blogs.qsc.com\/systems\/es\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/\",\"name\":\"All Subwoofers Are Not Created Equal - Q-SYS\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.qsc.com\/systems\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.qsc.com\/systems\/es\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.qsc.com\/systems\/es\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2021\/05\/GP218-SB2180-image-1024x496.png\",\"datePublished\":\"2021-05-07T02:14:34+00:00\",\"dateModified\":\"2022-07-13T13:23:11+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.qsc.com\/systems\/#\/schema\/person\/09fbe1a17a2afca2c74727c74d291d62\"},\"breadcrumb\":{\"@id\":\"https:\/\/blogs.qsc.com\/systems\/es\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.qsc.com\/systems\/es\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.qsc.com\/systems\/es\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/#primaryimage\",\"url\":\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2021\/05\/GP218-SB2180-image-1024x496.png\",\"contentUrl\":\"https:\/\/blogs.qsc.com\/app\/uploads\/sites\/5\/2021\/05\/GP218-SB2180-image-1024x496.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blogs.qsc.com\/systems\/es\/2021\/05\/06\/all-subwoofers-are-not-created-equal\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/blogs.qsc.com\/systems\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"All Subwoofers Are Not Created Equal\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.qsc.com\/systems\/#website\",\"url\":\"https:\/\/blogs.qsc.com\/systems\/\",\"name\":\"Q-SYS\",\"description\":\"System Blog\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blogs.qsc.com\/systems\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blogs.qsc.com\/systems\/#\/schema\/person\/09fbe1a17a2afca2c74727c74d291d62\",\"name\":\"Barry Ferrell\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.qsc.com\/systems\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/450aa6cc9ede40bb571182843971314579f53f9097097a514e55732797760f46?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/450aa6cc9ede40bb571182843971314579f53f9097097a514e55732797760f46?s=96&d=mm&r=g\",\"caption\":\"Barry Ferrell\"},\"description\":\"In October 2019, Barry Ferrell stepped into the role of VP, Cinema Product Development and Strategy, leveraging his product strategy skills and technical knowledge. 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