{"id":472,"date":"2020-11-17T14:33:59","date_gmt":"2020-11-17T05:33:59","guid":{"rendered":"https:\/\/www.jato.jp\/magazine\/?p=472"},"modified":"2025-09-01T16:47:47","modified_gmt":"2025-09-01T07:47:47","slug":"power-amplifier","status":"publish","type":"post","link":"https:\/\/www.jato.jp\/magazine\/audio\/power-amplifier\/","title":{"rendered":"\u97f3\u97ff\u306e\u30d7\u30ed\u304c\u89e3\u8aac\uff01\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u5f79\u5272\u3068\u9078\u3073\u65b9\u306e\u30dd\u30a4\u30f3\u30c8"},"content":{"rendered":"\n<p>\u5e97\u8217\u3084\u30a4\u30d9\u30f3\u30c8\u306a\u3069\u306e\u97f3\u97ff\u3092\u8003\u3048\u308b\u5834\u5408\u3001\u30b9\u30d4\u30fc\u30ab\u30fc\u3084\u30a2\u30f3\u30d7\u3068\u3044\u3063\u305f\u97f3\u97ff\u6a5f\u5668\u306b\u3064\u3044\u3066\u77e5\u3089\u306a\u304f\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\u3055\u3089\u306b\u3001\u30a2\u30f3\u30d7\u306b\u306f\u69d8\u3005\u306a\u7a2e\u985e\u304c\u3042\u308a\u3001\u305d\u308c\u305e\u308c\u5f79\u5272\u3082\u9055\u3044\u307e\u3059\u3002<br>\u4eca\u56de\u306f\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u5f79\u5272\u3084\u9078\u3073\u65b9\u306e\u30dd\u30a4\u30f3\u30c8\u3001\u304a\u3059\u3059\u3081\u306e\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div 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href=\"https:\/\/www.jato.jp\/magazine\/audio\/power-amplifier\/#%E3%83%97%E3%83%AD%E5%8E%B3%E9%81%B8%EF%BC%81%E3%81%8A%E3%81%99%E3%81%99%E3%82%81%E3%81%AE%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97\" title=\"\u30d7\u30ed\u53b3\u9078\uff01\u304a\u3059\u3059\u3081\u306e\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\">\u30d7\u30ed\u53b3\u9078\uff01\u304a\u3059\u3059\u3081\u306e\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.jato.jp\/magazine\/audio\/power-amplifier\/#%E5%B0%8F%E8%A6%8F%E6%A8%A1%E5%BA%97%E8%88%97%E3%81%AB%E3%81%8A%E3%81%99%E3%81%99%E3%82%81%E3%81%AE%E3%82%B9%E3%83%94%E3%83%BC%E3%82%AB%E3%83%BC%EF%BC%8B%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97%E3%81%AE%E3%82%BB%E3%83%83%E3%83%88\" title=\"\u5c0f\u898f\u6a21\u5e97\u8217\u306b\u304a\u3059\u3059\u3081\u306e\u30b9\u30d4\u30fc\u30ab\u30fc\uff0b\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u30bb\u30c3\u30c8\">\u5c0f\u898f\u6a21\u5e97\u8217\u306b\u304a\u3059\u3059\u3081\u306e\u30b9\u30d4\u30fc\u30ab\u30fc\uff0b\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u30bb\u30c3\u30c8<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.jato.jp\/magazine\/audio\/power-amplifier\/#%E3%81%8A%E3%82%8F%E3%82%8A%E3%81%AB\" title=\"\u304a\u308f\u308a\u306b\">\u304a\u308f\u308a\u306b<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97%E3%81%A8%E3%81%AF\"><\/span>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3068\u306f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306f\u3001<span class=\"bold\">\u30d7\u30ea\u30a2\u30f3\u30d7\u304b\u3089\u304f\u308b\u96fb\u6c17\u4fe1\u53f7\u3092\u5897\u5e45\u3055\u305b\u3001\u30b9\u30d4\u30fc\u30ab\u30fc\u304c\u9cf4\u308b\u30ec\u30d9\u30eb\u306b\u5f15\u304d\u4e0a\u3052\u308b\u305f\u3081\u306e\u97f3\u97ff\u6a5f\u5668<\/span>\u3067\u3059\u3002\u97f3\u6e90\u304b\u3089\u767a\u305b\u3089\u308c\u305f\u96fb\u6c17\u4fe1\u53f7\u306f\u3001\u300c\u30d7\u30ea\u30a2\u30f3\u30d7\u2192\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u2192\u30b9\u30d4\u30fc\u30ab\u30fc\u300d\u3068\u3044\u3046\u9806\u756a\u3067\u9001\u3089\u308c\u3001\u97f3\u3068\u3057\u3066\u518d\u751f\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"%E3%81%9D%E3%82%82%E3%81%9D%E3%82%82%E3%80%8C%E3%82%A2%E3%83%B3%E3%83%97%E3%80%8D%E3%81%AE%E5%BD%B9%E5%89%B2%E3%81%A8%E3%81%AF%EF%BC%9F\"><\/span>\u305d\u3082\u305d\u3082\u300c\u30a2\u30f3\u30d7\u300d\u306e\u5f79\u5272\u3068\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div>\n<figure><img decoding=\"async\" src=\"\/\/www.jato.jp\/magazine\/wp-content\/uploads\/power-amplifier-2.jpg\" alt=\"\u305d\u3082\u305d\u3082\u300c\u30a2\u30f3\u30d7\u300d\u306e\u5f79\u5272\u3068\u306f\uff1f\" width=\"300\"><\/figure><p><\/p>\n<p>\u30a2\u30f3\u30d7\u3068\u306f\u3001\u97f3\u6e90\u304b\u3089\u306e\u96fb\u6c17\u4fe1\u53f7\u3092\u5897\u5e45\u3055\u305b\u308b\u305f\u3081\u306e\u6a5f\u5668\u306e\u3053\u3068\u3092\u6307\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30a2\u30f3\u30d7\u306b\u306f\u5f79\u5272\u306b\u3088\u3063\u3066\u300c\u30d7\u30ea\u30a2\u30f3\u30d7\u300d\u3068\u300c\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u300d\u306e2\u7a2e\u985e\u306b\u5206\u304b\u308c\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%97%E3%83%AA%E3%82%A2%E3%83%B3%E3%83%97%E3%81%AE%E5%BD%B9%E5%89%B2\"><\/span>\u30d7\u30ea\u30a2\u30f3\u30d7\u306e\u5f79\u5272<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30d7\u30ea\u30a2\u30f3\u30d7\u306f\u3001\u97f3\u6e90\u304b\u3089\u9001\u3089\u308c\u3066\u304d\u305f\u5fae\u7d30\u306a\u96fb\u6c17\u4fe1\u53f7\u3092\u5897\u5e45\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u5165\u529b\u5207\u308a\u66ff\u3048\u3084\u3001\u5de6\u53f3\u306e\u97f3\u91cf\u30d0\u30e9\u30f3\u30b9\u3001\u97f3\u8cea\u306e\u8abf\u6574\u306a\u3069\u3082\u884c\u3048\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u3088\u3046\u306b\u30b9\u30d4\u30fc\u30ab\u30fc\u304c\u9cf4\u308b\u30ec\u30d9\u30eb\u307e\u3067\u96fb\u6c17\u4fe1\u53f7\u3092\u5897\u5e45\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97%EF%BC%88%E3%83%A1%E3%82%A4%E3%83%B3%E3%82%A2%E3%83%B3%E3%83%97%EF%BC%89%E3%81%AE%E5%BD%B9%E5%89%B2\"><\/span>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\uff08\u30e1\u30a4\u30f3\u30a2\u30f3\u30d7\uff09\u306e\u5f79\u5272<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306f\u3001\u5192\u982d\u3067\u89e6\u308c\u305f\u3088\u3046\u306b\u30d7\u30ea\u30a2\u30f3\u30d7\u304b\u3089\u9001\u3089\u308c\u3066\u304f\u308b\u96fb\u6c17\u4fe1\u53f7\u3092\u5897\u5e45\u3055\u305b\u3001\u30b9\u30d4\u30fc\u30ab\u30fc\u304c\u9cf4\u308b\u30ec\u30d9\u30eb\u306b\u5f15\u304d\u4e0a\u3052\u308b\u305f\u3081\u306e\u97f3\u97ff\u6a5f\u5668\u3067\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"2%E3%81%A4%E3%81%AE%E5%BD%B9%E5%89%B2%E3%82%92%E4%BD%B5%E3%81%9B%E6%8C%81%E3%81%A4%E3%80%8C%E3%83%97%E3%83%AA%E3%83%A1%E3%82%A4%E3%83%B3%E3%82%A2%E3%83%B3%E3%83%97%E3%80%8D%E3%82%82%E3%81%82%E3%82%8B\"><\/span>2\u3064\u306e\u5f79\u5272\u3092\u4f75\u305b\u6301\u3064\u300c\u30d7\u30ea\u30e1\u30a4\u30f3\u30a2\u30f3\u30d7\u300d\u3082\u3042\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30d7\u30ea\u30e1\u30a4\u30f3\u30a2\u30f3\u30d7\u306f\u3001\u300c\u30d7\u30ea\u30a2\u30f3\u30d7\u300d\u3068\u300c\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\uff08\u30e1\u30a4\u30f3\u30a2\u30f3\u30d7\uff09\u300d\u306e\u6a5f\u80fd\u30921\u3064\u306b\u307e\u3068\u3081\u305f\u3082\u306e\u3067\u3059\u3002\u30a2\u30f3\u30d7\u306e\u77e5\u8b58\u304c\u306a\u3044\u4eba\u3067\u3082\u6271\u3044\u3084\u3059\u3044\u3068\u3044\u3046\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97%E3%81%AE%E7%A8%AE%E9%A1%9E\"><\/span>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u7a2e\u985e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%82%B9%E3%83%86%E3%83%AC%E3%82%AA%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97\"><\/span>\u30b9\u30c6\u30ec\u30aa\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5165\u529b\u304c2\u7cfb\u7d71\u3042\u308b\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3067\u3059\u3002\u4e00\u822c\u7684\u306b\u306f\u30e1\u30a4\u30f3\u30b9\u30d4\u30fc\u30ab\u30fc\u306eL\u3068R\u3092\u9cf4\u3089\u3059\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"4%E3%83%81%E3%83%A3%E3%83%B3%E3%83%8D%E3%83%AB%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97\"><\/span>4\u30c1\u30e3\u30f3\u30cd\u30eb\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30e1\u30a4\u30f3\u30b9\u30d4\u30fc\u30ab\u30fc\u306eL\u3068R\u306b\u52a0\u3048\u3066\u3001\u3055\u3089\u306b2\u7cfb\u7d71\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u305d\u308c\u305e\u308c\u8abf\u6574\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%8F%E3%82%A4%E3%82%A4%E3%83%B3%E3%83%94%E3%83%BC%E3%83%80%E3%83%B3%E3%82%B9%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97\"><\/span>\u30cf\u30a4\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30cf\u30a4\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u30b9\u30d4\u30fc\u30ab\u30fc\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u591a\u6570\u306e\u30b9\u30d4\u30fc\u30ab\u30fc\u3092\u9cf4\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3067\u3059\u3002\u5e97\u8217\u5185BGM\u7528\u306e\u97f3\u97ff\u3084\u4f1a\u8b70\u5834\u3001\u30a4\u30d9\u30f3\u30c8\u306a\u3069\u306e\u30b7\u30fc\u30f3\u3067\u3088\u304f\u7528\u3044\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%87%E3%82%B8%E3%82%BF%E3%83%AB%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97Class_D\"><\/span>\u30c7\u30b8\u30bf\u30eb\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7(Class D)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30c7\u30b8\u30bf\u30eb\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306f\u3001\u97f3\u58f0\u4fe1\u53f7\u30920\/1\u30d1\u30eb\u30b9\u306b\u5909\u63db\u5f8c\u3001\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30a2\u30f3\u30d7\u306b\u3066\u5897\u5e45\u3057\u3001\u5897\u5e45\u5f8c\u306b\u30a2\u30ca\u30ed\u30b0\u4fe1\u53f7\u306e\u307f\u3092\u53d6\u308a\u51fa\u3057\u30b9\u30d4\u30fc\u30ab\u30fc\u3092\u9cf4\u3089\u3057\u307e\u3059\u3002\u30a2\u30ca\u30ed\u30b0\u30a2\u30f3\u30d7\u3068\u6bd4\u3079\u3001\u30c7\u30b8\u30bf\u30eb\u30a2\u30f3\u30d7\u306f\u4f4e\u767a\u71b1\u3001\u5c0f\u578b\u8efd\u91cf\u306a\u70b9\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97%E3%81%AE%E5%BD%A2%E3%81%AE%E9%81%95%E3%81%84\"><\/span>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u5f62\u306e\u9055\u3044<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306b\u306f\u3001\u30a2\u30f3\u30d7\u5358\u4f53\u306e\u3082\u306e\u3068\u30a2\u30f3\u30d7\u4ee5\u5916\u306e\u3082\u306e\u3068\u4e00\u4f53\u306b\u306a\u3063\u305f\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E5%8D%98%E4%BD%93%E5%9E%8B\"><\/span>\u5358\u4f53\u578b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u4ee5\u5916\u306e\u6a5f\u80fd\u304c\u4ed8\u3044\u3066\u3044\u307e\u305b\u3093\u3002\u7d44\u307f\u5408\u308f\u305b\u3089\u308c\u308b\u5e45\u304c\u5e83\u304f\u3001\u81ea\u5206\u306e\u97f3\u3092\u4f5c\u308a\u305f\u3044\u4eba\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%91%E3%83%AF%E3%83%BC%E3%83%89%E3%83%9F%E3%82%AD%E3%82%B5%E3%83%BC\"><\/span>\u30d1\u30ef\u30fc\u30c9\u30df\u30ad\u30b5\u30fc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3068\u30df\u30ad\u30b5\u30fc\u304c\u4e00\u4f53\u306b\u306a\u3063\u305f\u3082\u306e\u3067\u3059\u3002\u30a2\u30f3\u30d7\u3068\u30df\u30ad\u30b5\u30fc\u3092\u5225\u3005\u306b\u7528\u610f\u3059\u308b\u306e\u304c\u7169\u308f\u3057\u3044\u5834\u5408\u3084\u3001\u51dd\u3063\u305f\u30bb\u30c3\u30c6\u30a3\u30f3\u30b0\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u5834\u5408\u306a\u3069\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%91%E3%83%AF%E3%83%BC%E3%83%89%E3%82%B9%E3%83%94%E3%83%BC%E3%82%AB%E3%83%BC\"><\/span>\u30d1\u30ef\u30fc\u30c9\u30b9\u30d4\u30fc\u30ab\u30fc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u3053\u3061\u3089\u306f\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3068\u30b9\u30d4\u30fc\u30ab\u30fc\u304c\u4e00\u4f53\u306b\u306a\u3063\u305f\u3082\u306e\u3067\u30a2\u30af\u30c6\u30a3\u30d6\u30b9\u30d4\u30fc\u30ab\u30fc\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002\u30b9\u30d4\u30fc\u30ab\u30fc\u30e6\u30cb\u30c3\u30c8\u3092\u9cf4\u52d5\u3059\u308b\u305f\u3081\u306e\u6700\u9069\u306a\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u304c\u5185\u8535\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u7121\u99c4\u306e\u306a\u3044\u7d4c\u6e08\u7684\u306a\u30b9\u30d4\u30fc\u30ab\u30fc\u30b7\u30b9\u30c6\u30e0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"%E3%83%91%E3%83%83%E3%82%B7%E3%83%96%E3%82%B9%E3%83%94%E3%83%BC%E3%82%AB%E3%83%BC%E3%81%A8%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97%E3%81%AE%E7%B5%84%E3%81%BF%E5%90%88%E3%82%8F%E3%81%9B%E6%96%B9\"><\/span>\u30d1\u30c3\u30b7\u30d6\u30b9\u30d4\u30fc\u30ab\u30fc\u3068\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u7d44\u307f\u5408\u308f\u305b\u65b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div>\n<figure><img decoding=\"async\" src=\"\/\/www.jato.jp\/magazine\/wp-content\/uploads\/power-amplifier-3.jpg\" alt=\"\u30d1\u30c3\u30b7\u30d6\u30b9\u30d4\u30fc\u30ab\u30fc\u3068\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u7d44\u307f\u5408\u308f\u305b\u65b9\" width=\"300\" \/><\/figure>\n<p>\u00a0<\/p>\n<p>\u30d1\u30c3\u30b7\u30d6\u30b9\u30d4\u30fc\u30ab\u30fc\u306f\u3001\u30a2\u30f3\u30d7\u3092\u5185\u8535\u3057\u3066\u3044\u306a\u3044\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u3053\u3068\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u30d1\u30c3\u30b7\u30d6\u30b9\u30d4\u30fc\u30ab\u30fc\u3068\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u8003\u3048\u308b\u969b\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%82%B9%E3%83%94%E3%83%BC%E3%82%AB%E3%83%BC%E3%81%AE%E6%8E%A5%E7%B6%9A%E5%8F%B0%E6%95%B0\"><\/span>\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u63a5\u7d9a\u53f0\u6570<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306b\u63a5\u7d9a\u53ef\u80fd\u306a\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u53f0\u6570\u306f\u3001\u63a5\u7d9a\u65b9\u5f0f\u304c\u30ed\u30fc\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304b\u30cf\u30a4\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304b\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<br>\u30ed\u30fc\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u5834\u5408\u3001\u63a5\u7d9a\u3067\u304d\u308b\u30b9\u30d4\u30fc\u30ab\u30fc\u6570\u306f\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u30c1\u30e3\u30f3\u30cd\u30eb\u6570\u3068\u540c\u3058\u3067\u3059\u3002<br>\u30cf\u30a4\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u5834\u5408\u306f\u3001\u591a\u6570\u306e\u30b9\u30d4\u30fc\u30ab\u30fc\u3092\u63a5\u7d9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u5b9a\u683c\u5165\u529b\u306e\u5408\u8a08\u304c\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u51fa\u529b\u5024\u4ee5\u5185\u3067\u3042\u308c\u3070\u3001\u4f55\u53f0\u3067\u3082\u30d1\u30e9\u30ec\u30eb\u63a5\u7d9a\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%82%B9%E3%83%94%E3%83%BC%E3%82%AB%E3%83%BC%E3%81%AE%E8%A8%B1%E5%AE%B9%E5%85%A5%E5%8A%9BPGM%E3%81%A8%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97%E3%81%AE%E5%87%BA%E5%8A%9BRMS%E3%81%AE%E9%96%A2%E4%BF%82\"><\/span>\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u8a31\u5bb9\u5165\u529b(PGM)\u3068\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u51fa\u529b(RMS)\u306e\u95a2\u4fc2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30a2\u30f3\u30d7\u3068\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u8003\u3048\u308b\u969b\u306f\u3001\u300c\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u8a31\u5bb9\u5165\u529b(PGM) \uff1e \u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u5b9a\u683c\u51fa\u529b(RMS)\u300d\u304c\u57fa\u672c\u3068\u8a00\u308f\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u30fc\u30aa\u30fc\u30c7\u30a3\u30aa\u3067\u306e\u3053\u3068\u3002\u30d7\u30ed\u30aa\u30fc\u30c7\u30a3\u30aa\u3067\u3053\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u884c\u3046\u3068\u7d0d\u5f97\u306e\u3044\u304f\u97f3\u304c\u51fa\u306a\u3044\u306e\u304c\u73fe\u72b6\u3067\u3059\u3002\u307e\u305f\u3001\u5c0f\u3055\u306a\u51fa\u529b\u306e\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3067\u6b6a\u307f\u3092\u751f\u3058\u3001\u7c21\u5358\u306b\u30b9\u30d4\u30fc\u30ab\u30fc\u3092\u7834\u640d\u3055\u305b\u3066\u3057\u307e\u3044\u307e\u3059\u3002<br>\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u8a31\u5bb9\u5165\u529b\u306b\u306f\u300cNOISE\u300d\u300cPGM\u300d\u300cMAX\u300d\u306e\u6a19\u8a18\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30aa\u30fc\u30c7\u30a3\u30aa\u3067\u306f\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306b\u5341\u5206\u306a\u4f59\u529b\u3092\u3082\u305f\u305b\u3001\u300c\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u8a31\u5bb9\u5165\u529b\uff08PGM\uff09\uff1c\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u5b9a\u683c\u51fa\u529b\uff08RMS\uff09\uff1c\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u8a31\u5bb9\u5165\u529b\uff08MAX\uff09\u300d\u304c\u4e00\u822c\u7684\u3068\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u969b\u3001\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u30df\u30b9\u3084\u30cf\u30a6\u30ea\u30f3\u30b0\u306a\u3069\u3067\u30b9\u30d4\u30fc\u30ab\u30fc\u3092\u5b88\u308b\u305f\u3081\u3001DSP\u3084\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3067\u30ea\u30df\u30c3\u30bf\u30fc\u3084\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u306e\u8a2d\u5b9a\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%91%E3%83%A9%E3%83%AC%E3%83%AB%E6%8E%A5%E7%B6%9A%E3%81%AE%E5%A0%B4%E5%90%88%E3%81%AF%E8%A6%81%E6%B3%A8%E6%84%8F\"><\/span>\u30d1\u30e9\u30ec\u30eb\u63a5\u7d9a\u306e\u5834\u5408\u306f\u8981\u6ce8\u610f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30d1\u30e9\u30ec\u30eb\u63a5\u7d9a\u3092\u884c\u3046\u5834\u5408\u3001\u30b9\u30d4\u30fc\u30ab\u30fc\u5168\u4f53\u306e\u62b5\u6297\u5024\uff08\u03a9\uff09\u304c\u5909\u5316\u3057\u307e\u3059\u3002\u30d1\u30e9\u30ec\u30eb\u63a5\u7d9a\u306f\u3001\u4f8b\u3048\u3070\u30b9\u30d4\u30fc\u30ab\u30fc2\u672c\u3067\u306f\u7a7a\u9593\u5168\u4f53\u3092\u30ab\u30d0\u30fc\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u3044\u969b\u306b\u884c\u3044\u307e\u3059\u3002\u3053\u3046\u3044\u3063\u305f\u5834\u5408\u306b\u3001\u3055\u3089\u306b2\u53f0\u306e\u30b9\u30d4\u30fc\u30ab\u30fc\u3092\u30d1\u30e9\u30ec\u30eb\u63a5\u7d9a\u3059\u308b\u3068\u3001\u30b9\u30d4\u30fc\u30ab\u30fc\u306e\u62b5\u6297\u304c8\u03a9\u3067\u3042\u308c\u3070\u3001\u534a\u5206\u306e\u62b5\u62974\u03a9\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u6642\u3001\u30a2\u30f3\u30d7\u5074\u306e\u51fa\u529b\u306f4\u03a9\u306e\u5b9a\u683c\u51fa\u529b\uff08RMS\uff09\u3092\u8003\u616e\u3057\u306a\u304f\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"%E3%83%97%E3%83%AD%E5%8E%B3%E9%81%B8%EF%BC%81%E3%81%8A%E3%81%99%E3%81%99%E3%82%81%E3%81%AE%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97\"><\/span>\u30d7\u30ed\u53b3\u9078\uff01\u304a\u3059\u3059\u3081\u306e\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u3092\u9078\u3076\u969b\u306f\u3001\u30b9\u30d4\u30fc\u30ab\u30fc\u3068\u306e\u7d44\u307f\u5408\u308f\u305b\u65b9\u304c\u91cd\u8981\u3067\u3059\u304c\u3001\u9078\u3076\u969b\u306b\u306f\u97f3\u97ff\u6a5f\u5668\u306b\u95a2\u3059\u308b\u77e5\u8b58\u304c\u5fc5\u8981\u3067\u3059\u3002<span 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id=\"%E5%B0%8F%E8%A6%8F%E6%A8%A1%E5%BA%97%E8%88%97%E3%81%AB%E3%81%8A%E3%81%99%E3%81%99%E3%82%81%E3%81%AE%E3%82%B9%E3%83%94%E3%83%BC%E3%82%AB%E3%83%BC%EF%BC%8B%E3%83%91%E3%83%AF%E3%83%BC%E3%82%A2%E3%83%B3%E3%83%97%E3%81%AE%E3%82%BB%E3%83%83%E3%83%88\"><\/span>\u5c0f\u898f\u6a21\u5e97\u8217\u306b\u304a\u3059\u3059\u3081\u306e\u30b9\u30d4\u30fc\u30ab\u30fc\uff0b\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u30bb\u30c3\u30c8<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"product-container\">\n    <!-- \u5546\u54c1\u753b\u50cf\u306e\u30ea\u30f3\u30af -->\n    <div class=\"product-image\">\n        <a href=\"https:\/\/www.jato.jp\/c\/gr304\/ASET_01YW\" target=\"_blank\" rel=\"noopener\">\n            <!-- \u5546\u54c1\u753b\u50cf -->\n            <img decoding=\"async\" src=\"\/\/www.jato.jp\/magazine\/wp-content\/uploads\/power-amplifier-4.jpg\" 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