{"id":12266,"date":"2001-10-01T00:00:00","date_gmt":"2001-10-01T00:00:00","guid":{"rendered":"http:\/\/www.sweetwater.com\/sweetcare\/?p=12266"},"modified":"2007-04-27T00:00:00","modified_gmt":"2007-04-27T00:00:00","slug":"what-power-compression","status":"publish","type":"articles","link":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/","title":{"rendered":"What is &#8220;power compression&#8221;?"},"content":{"rendered":"<p>Speaker voice coils are made of copper or aluminum. As these voice coils increase in temperature during normal operation, the DC resistance of the  voice coil increases. Greater voice coil resistance means less power transfer from the amplifier. As a result, the speaker will not play as loud when it&#8217;s &#8220;warmed up&#8221; as it did when  it was &#8220;cold&#8221;. Some speakers may exhibit 3 to 6 dB of power compression. This means that  power compression can have the same effect as taking away half of your PA!<\/p>\n<p>JBL has gone to great lengths to reduce the effects of power compression. Our VGC&#8482;<br \/> (Vented Gap Cooling) and TTM&#8482; (Total Thermal Management) technologies effectively<br \/>dissipate heat for reduced power compression and increased reliability. In addition, some<br \/> models use liquid-cooled (ferrofluid-cooled) voice coils.<\/p>\n","protected":false},"featured_media":0,"template":"","categories":[1],"tags":[],"storecat":[],"itemids":[21258,21825,25092,25097,30397,30400,30402,30403],"manufacturers":[33453],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<meta name=\"description\" content=\"Check out the What is &quot;power compression&quot;? page at Sweetwater \u2014 the world&#039;s leading music technology and instrument retailer!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is &quot;power compression&quot;? - SweetCare\" \/>\n<meta property=\"og:description\" content=\"Speaker voice coils are made of copper or aluminum. As these voice coils increase in temperature during normal operation, the DC resistance of the voice coil increases. Greater voice coil resistance means less power transfer from the amplifier. As a result, the speaker will not play as loud when it&#8217;s &#8220;warmed up&#8221; as it did [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/\" \/>\n<meta property=\"og:site_name\" content=\"SweetCare\" \/>\n<meta property=\"article:modified_time\" content=\"2007-04-27T00:00:00+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/#website\",\"url\":\"https:\/\/www.sweetwater.com\/sweetcare\/\",\"name\":\"SweetCare\",\"description\":\"Service and Support\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.sweetwater.com\/sweetcare\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/#webpage\",\"url\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/\",\"name\":\"What is \\\"power compression\\\"? - SweetCare\",\"isPartOf\":{\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/#website\"},\"datePublished\":\"2001-10-01T00:00:00+00:00\",\"dateModified\":\"2007-04-27T00:00:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.sweetwater.com\/sweetcare\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Articles\",\"item\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"What is &#8220;power compression&#8221;?\"}]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"description":"Check out the What is \"power compression\"? page at Sweetwater \u2014 the world's leading music technology and instrument retailer!","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/what-power-compression\/","og_locale":"en_US","og_type":"article","og_title":"What is \"power compression\"? - SweetCare","og_description":"Speaker voice coils are made of copper or aluminum. As these voice coils increase in temperature during normal operation, the DC resistance of the voice coil increases. Greater voice coil resistance means less power transfer from the amplifier. 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