{"id":34644,"date":"2022-04-30T16:00:00","date_gmt":"2022-04-30T14:00:00","guid":{"rendered":"https:\/\/reviews.tn\/news\/impedance-des-haut\/"},"modified":"2022-04-30T16:51:38","modified_gmt":"2022-04-30T14:51:38","slug":"impedance-des-haut","status":"publish","type":"post","link":"https:\/\/reviews.tn\/news\/impedance-des-haut\/","title":{"rendered":"Imp\u00e9dance des haut"},"content":{"rendered":"

\ud83d\udcf1 2022-04-30 16:00:00 – Paris\/France. <\/strong>
\n
\nbienvenue\u00e0 l’int\u00e9rieur\/Shutterstock.com<\/p>\n

Si vous achetez un nouvel amplificateur ou des haut-parleurs, il est important de pr\u00eater attention \u00e0 l’imp\u00e9dance de chacun. Pourquoi? Parce qu’une incompatibilit\u00e9 peut s\u00e9rieusement endommager l’un ou l’autre. Voyons comment \u00e9viter cela.<\/p>\n

Les \u00e9l\u00e9ments de l’\u00e9lectricit\u00e9<\/h2>\n

Il est difficile de parler d’ohms sans mentionner les autres \u00e9l\u00e9ments de l’\u00e9lectricit\u00e9. Donc, avant de plonger plus profond\u00e9ment dans les ohms, examinons tous les \u00e9l\u00e9ments d’un signal \u00e9lectrique tels qu’ils s’appliquent \u00e0 l’audio.<\/p>\n

L’\u00e9lectricit\u00e9 comporte quatre \u00e9l\u00e9ments cl\u00e9s\u00a0: les volts, les amp\u00e8res, les ohms et les watts. La tension est la puissance du signal, tandis que les amp\u00e8res mesurent le courant, que vous pouvez consid\u00e9rer comme la vitesse \u00e0 laquelle cette tension circule. Les ohms mesurent la r\u00e9sistance, qui, si vous consid\u00e9rez le signal comme de l’eau qui coule, est comme la taille du tuyau dans lequel il circule.<\/p>\n

Qu’en est-il des watts\u00a0? Les watts mesurent la puissance globale, qui est la tension multipli\u00e9e par le courant. L’augmentation de la tension ou du courant augmentera les watts globaux d’un syst\u00e8me donn\u00e9.<\/p>\n

Voyons maintenant pourquoi la r\u00e9sistance, mesur\u00e9e en ohms, est si importante.<\/p>\n

Un regard plus attentif sur les Ohms<\/h2>\n

Parce que les ohms mesurent la r\u00e9sistance, plus le nombre augmente, plus la r\u00e9sistance augmente. Le fait qu’un nombre inf\u00e9rieur \u00e9quivaut \u00e0 un signal plus puissant est en grande partie la raison pour laquelle les gens peuvent \u00eatre confus lorsqu’il s’agit d’ohms en premier lieu.<\/p>\n

Encore une fois, si vous pensez \u00e0 un signal audio provenant d’un amplificateur comme de l’eau qui coule d’un bec, vous pouvez consid\u00e9rer un haut-parleur comme un tuyau. Vous pouvez pomper toute l’eau que vous voulez dans ce tuyau, mais \u00e0 un certain point, plus aucune eau ne peut circuler dans ce tuyau.<\/p>\n

En supposant que l’amplificateur et le haut-parleur sont \u00e9valu\u00e9s \u00e0 la m\u00eame r\u00e9sistance de huit ohms, tout fonctionne comme il se doit. L’amplificateur n’essaiera pas de pomper plus que ce que le haut-parleur peut g\u00e9rer.<\/p>\n

Mais que se passe-t-il lorsque vous avez un d\u00e9calage\u00a0? Disons que vous avez un amplificateur de huit ohms mais un haut-parleur de quatre ohms. Dans ce cas, l’amplificateur ne peut pas fournir suffisamment de courant car la r\u00e9sistance est inf\u00e9rieure \u00e0 la sienne. C’est comme verser une bouteille d’eau d’un litre dans un tuyau capable d’en supporter beaucoup plus \u00e0 un moment donn\u00e9.<\/p>\n

Dans certains cas, c’est tr\u00e8s bien. Dans d’autres, l’amplificateur tentera de pomper suffisamment de courant pour correspondre \u00e0 la r\u00e9sistance du haut-parleur, qui est inf\u00e9rieure \u00e0 la sienne, et s’endommagera au cours du processus.<\/p>\n

Ohms dans les haut-parleurs et les amplificateurs<\/h2>\n

La grande majorit\u00e9 des amplificateurs et des haut-parleurs que vous voyez pour une utilisation grand public, comme les cha\u00eenes st\u00e9r\u00e9o ou les syst\u00e8mes de cin\u00e9ma maison, sont disponibles en quatre, six ou huit ohms. Cela dit, vous verrez le plus souvent huit ohms utilis\u00e9s de nos jours.<\/p>\n

De nombreux r\u00e9cepteurs st\u00e9r\u00e9o et A\/V sont fixes et ne sont destin\u00e9s \u00e0 \u00eatre utilis\u00e9s qu’avec des haut-parleurs de m\u00eame imp\u00e9dance. Vous rencontrerez certains r\u00e9cepteurs, en particulier des mod\u00e8les plus chers, qui sont fixes mais peuvent g\u00e9rer 100 watts \u00e0 huit ohms ou, par exemple, 200 watts \u00e0 quatre ohms.<\/p>\n

D’autres amplificateurs ont un commutateur int\u00e9gr\u00e9, g\u00e9n\u00e9ralement \u00e0 l’arri\u00e8re, qui vous permet de choisir diff\u00e9rents param\u00e8tres d’imp\u00e9dance. Cela dit, alors que les r\u00e9cepteurs A\/V continuent d’augmenter le nombre de canaux pour les syst\u00e8mes de cin\u00e9ma maison, nous en voyons de moins en moins avec ce param\u00e8tre.<\/p>\n

Les r\u00e9cepteurs A\/V haut de gamme peuvent prendre en charge des haut-parleurs de quatre ohms, mais ce n’est pas quelque chose que vous verrez dans les mod\u00e8les bas de gamme. Si vous n’\u00eates pas s\u00fbr que votre amplificateur puisse g\u00e9rer des haut-parleurs de quatre ohms, assurez-vous de vous en tenir \u00e0 une imp\u00e9dance correspondante, qui est souvent indiqu\u00e9e \u00e0 l’arri\u00e8re du r\u00e9cepteur.<\/p>\n

Les audiophiles utilisant des amplificateurs \u00e0 tube doivent \u00eatre particuli\u00e8rement prudents en ce qui concerne l’imp\u00e9dance, car les amplificateurs \u00e0 tube sont plus facilement endommag\u00e9s par des d\u00e9calages d’imp\u00e9dance. Utilisez un haut-parleur avec une imp\u00e9dance trop faible et vous pouvez endommager le haut-parleur, tandis que des haut-parleurs avec une imp\u00e9dance trop \u00e9lev\u00e9e endommageront l’ampli.<\/p>\n

Assurez-vous de faire correspondre<\/h2>\n

Comme nous l’avons d\u00e9j\u00e0 vu, des inad\u00e9quations de r\u00e9sistance peuvent endommager votre haut-parleur ou votre ampli.<\/p>\n

Si vous utilisez un amplificateur \u00e0 semi-conducteurs, que la grande majorit\u00e9 des appareils \u00e9lectroniques grand public utilisent, vous pouvez utiliser des haut-parleurs relativement s\u00fbrs avec une r\u00e9sistance plus \u00e9lev\u00e9e que l’ampli. Des haut-parleurs de huit ohms avec un r\u00e9cepteur A\/V de quatre ohms, par exemple, devraient fonctionner correctement.<\/p>\n

Cela dit, pour les meilleurs r\u00e9sultats et le moindre souci d’endommager quoi que ce soit, votre meilleur pari est de vous assurer que vous utilisez un amplificateur et des haut-parleurs avec les m\u00eames valeurs. Si vous lisez ceci avant de configurer une cha\u00eene st\u00e9r\u00e9o ou un syst\u00e8me de cin\u00e9ma maison, assurez-vous de consulter notre guide sur le c\u00e2blage du cin\u00e9ma maison.<\/p>\n

SOURCE : Reviews News<\/a><\/em> <\/p>\n

N\u2019h\u00e9sitez pas \u00e0 partager notre article sur les r\u00e9seaux sociaux afin de nous donner un solide coup de pouce. \ud83e\udd17<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

\ud83d\udcf1 2022-04-30 16:00:00 – Paris\/France. bienvenue\u00e0 l’int\u00e9rieur\/Shutterstock.com Si vous achetez un nouvel amplificateur ou des haut-parleurs, il est important de pr\u00eater attention \u00e0 l’imp\u00e9dance de chacun. Pourquoi? Parce qu’une incompatibilit\u00e9 peut s\u00e9rieusement endommager l’un ou l’autre. Voyons comment \u00e9viter cela. Les \u00e9l\u00e9ments de l’\u00e9lectricit\u00e9 Il est difficile de parler d’ohms sans mentionner les autres \u00e9l\u00e9ments […]<\/p>\n","protected":false},"author":8,"featured_media":34645,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_focuskw_text_input":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[32],"tags":[44,36,46],"class_list":["post-34644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mobile","tag-actus-mobile","tag-mobile","tag-smartphone"],"yoast_head":"\nImp\u00e9dance des haut - Reviews News - Actualit\u00e9 High-tech, hardware, consoles, jeux vid\u00e9o et divertissement<\/title>\n<meta name=\"description\" content=\"\ud83d\udcf1 2022-04-30 16:00:00 - Paris\/France. bienvenue\u00e0 l'int\u00e9rieur\/Shutterstock.com Si vous achetez un nouvel amplificateur ou des haut-parleurs, il est\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/reviews.tn\/news\/impedance-des-haut\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Imp\u00e9dance des haut - Reviews News - Actualit\u00e9 High-tech, hardware, consoles, jeux vid\u00e9o et divertissement\" \/>\n<meta property=\"og:description\" content=\"\ud83d\udcf1 2022-04-30 16:00:00 - Paris\/France. bienvenue\u00e0 l'int\u00e9rieur\/Shutterstock.com Si vous achetez un nouvel amplificateur ou des haut-parleurs, il est\" \/>\n<meta property=\"og:url\" content=\"https:\/\/reviews.tn\/news\/impedance-des-haut\/\" \/>\n<meta property=\"og:site_name\" content=\"Reviews News - Actualit\u00e9 High-tech, hardware, consoles, jeux vid\u00e9o et divertissement\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-30T14:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-04-30T14:51:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/04\/Impedance-des-haut.jpg?fit=2392%2C1342&ssl=1\" \/>\n\t<meta property=\"og:image:width\" content=\"2392\" \/>\n\t<meta property=\"og:image:height\" content=\"1342\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Viktoria C.\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Viktoria C.\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/reviews.tn\/news\/impedance-des-haut\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/reviews.tn\/news\/impedance-des-haut\/\"},\"author\":{\"name\":\"Viktoria C.\",\"@id\":\"https:\/\/reviews.tn\/news\/#\/schema\/person\/6301fbf284f9171b3973ae5a5242daf6\"},\"headline\":\"Imp\u00e9dance des haut\",\"datePublished\":\"2022-04-30T14:00:00+00:00\",\"dateModified\":\"2022-04-30T14:51:38+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/reviews.tn\/news\/impedance-des-haut\/\"},\"wordCount\":974,\"publisher\":{\"@id\":\"https:\/\/reviews.tn\/news\/#organization\"},\"image\":{\"@id\":\"https:\/\/reviews.tn\/news\/impedance-des-haut\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/04\/Impedance-des-haut.jpg?fit=2392%2C1342&ssl=1\",\"keywords\":[\"Actus mobile\",\"Mobile\",\"Smartphone\"],\"articleSection\":[\"Mobile & Smartphones\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/reviews.tn\/news\/impedance-des-haut\/\",\"url\":\"https:\/\/reviews.tn\/news\/impedance-des-haut\/\",\"name\":\"Imp\u00e9dance des haut - 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Les conditions les plus chaudes en Chine depuis plus de 60 ans ont pouss\u00e9 les\u2026","rel":"","context":"Dans "iPad"","block_context":{"text":"iPad","link":"https:\/\/reviews.tn\/news\/category\/mobile\/ipad\/"},"img":{"alt_text":"article thumbnail","src":"https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Foxconn-rouvre-lusine-diPad-avec-une-subvention-delectricite-prioritaire-de.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Foxconn-rouvre-lusine-diPad-avec-une-subvention-delectricite-prioritaire-de.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Foxconn-rouvre-lusine-diPad-avec-une-subvention-delectricite-prioritaire-de.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Foxconn-rouvre-lusine-diPad-avec-une-subvention-delectricite-prioritaire-de.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Foxconn-rouvre-lusine-diPad-avec-une-subvention-delectricite-prioritaire-de.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":55721,"url":"https:\/\/reviews.tn\/news\/le-systeme-de-gestion-de-donnees-sans-fil-blutech-aspire-a-etre-liphone-de-lindustrie-traditionnelle\/","url_meta":{"origin":34644,"position":5},"title":"Le syst\u00e8me de gestion de donn\u00e9es sans fil Blutech aspire \u00e0 \u00eatre \u00abl’iPhone de l’industrie traditionnelle\u00bb","author":"Viktoria C.","date":"15 ao\u00fbt 2022","format":false,"excerpt":"\ud83d\udcf1 2022-08-15 09:06:37 - Paris\/France. La transformation num\u00e9rique est un processus difficile, en particulier pour les industries traditionnelles. Blutech, une soci\u00e9t\u00e9 ta\u00efwanaise sp\u00e9cialis\u00e9e dans l'IIoT (IdO industriel), a d\u00e9velopp\u00e9 un syst\u00e8me de gestion des donn\u00e9es pour aider ces industries \u00e0 entrer dans la nouvelle \u00e8re num\u00e9rique.Selon le co-fondateur et directeur\u2026","rel":"","context":"Dans "iPhone"","block_context":{"text":"iPhone","link":"https:\/\/reviews.tn\/news\/category\/mobile\/iphone\/"},"img":{"alt_text":"Le syst\u00e8me de gestion de donn\u00e9es sans fil Blutech aspire \u00e0 \u00eatre \u00abl'iPhone de l'industrie traditionnelle\u00bb - DIGITIMES\n","src":"https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Le-systeme-de-gestion-de-donnees-sans-fil-Blutech-aspire.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Le-systeme-de-gestion-de-donnees-sans-fil-Blutech-aspire.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Le-systeme-de-gestion-de-donnees-sans-fil-Blutech-aspire.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Le-systeme-de-gestion-de-donnees-sans-fil-Blutech-aspire.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/reviews.tn\/news\/wp-content\/uploads\/2022\/08\/Le-systeme-de-gestion-de-donnees-sans-fil-Blutech-aspire.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/posts\/34644","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/comments?post=34644"}],"version-history":[{"count":1,"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/posts\/34644\/revisions"}],"predecessor-version":[{"id":34646,"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/posts\/34644\/revisions\/34646"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/media\/34645"}],"wp:attachment":[{"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/media?parent=34644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/categories?post=34644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/reviews.tn\/news\/wp-json\/wp\/v2\/tags?post=34644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}