{"id":414,"date":"2016-02-13T14:23:23","date_gmt":"2016-02-13T14:23:23","guid":{"rendered":"http:\/\/www.professionistidelsuono.net\/blog_audio\/?p=414"},"modified":"2016-02-13T14:23:23","modified_gmt":"2016-02-13T14:23:23","slug":"crossover-12db-e-18db-come-si-calcolano-e-come-sono-composti","status":"publish","type":"post","link":"https:\/\/www.professionistidelsuono.net\/blog_audio\/crossover-12db-e-18db-come-si-calcolano-e-come-sono-composti\/","title":{"rendered":"Crossover 12dB e 18dB &#8211; Come si calcolano e come sono composti"},"content":{"rendered":"<div id=\"entry\"><strong><a href=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.5.jpg?ssl=1\" rel=\"attachment wp-att-415\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-415 alignleft\" src=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.5.jpg?resize=271%2C231&#038;ssl=1\" alt=\"cross.5\" width=\"271\" height=\"231\" \/><\/a>Formule per i calcoli<\/strong><br \/>\nIl crossover \u00e8 formato da un filtro passa-basso e un altro passa-alto.<strong>L1-L2 in millihenry <\/strong>= (Zohm\/ Hz) x 225 C1-C2 in mF = 1.000.000\/(8.88xHzxZ)<em>Z= impedenza dell\u2019altoparlante in ohm<br \/>\nHz= frequenza d\u2019incrocio in Hertz<\/em><\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.6.jpg?ssl=1\" rel=\"attachment wp-att-416\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-416 alignleft\" src=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.6.jpg?resize=272%2C343&#038;ssl=1\" alt=\"cross.6\" width=\"272\" height=\"343\" srcset=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.6.jpg?w=272&amp;ssl=1 272w, https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.6.jpg?resize=238%2C300&amp;ssl=1 238w\" sizes=\"auto, (max-width: 272px) 100vw, 272px\" \/><\/a>(Zohm\/Hz max)x225 C1 mF=1.000.000\/(8.88xZohmxHz max)<\/p>\n<p><strong>Passa banda per Midrange<\/strong><\/p>\n<p>L2 mH=(ZohmHz min)x225<\/p>\n<p>L3 mH=(Zohm\/Hzmax)x225<\/p>\n<p>C2 mF=1.000.000\/(8.88xZohmxHzmin)<\/p>\n<p>C3 mF=1.000.000\/(8.88xZohmxHzmax)<\/p>\n<p><strong>Passa basso per il Woofer<\/strong><\/p>\n<p>L4 mH=(Zohm\/Hzmin)x225<\/p>\n<p>C4 mF=1.000.000\/(8.88xZohmxHzmin)<\/p>\n<p><em>Z= impedenza dell\u2019altoparlante in ohm<br \/>\nHz= frequenza d\u2019incrocio in Hertz<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong><a href=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.7.jpg?ssl=1\" rel=\"attachment wp-att-417\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-417 alignleft\" src=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.7.jpg?resize=260%2C235&#038;ssl=1\" alt=\"cross.7\" width=\"260\" height=\"235\" \/><\/a>Passa Alto per i medio Acuti <\/strong><br \/>\nL1 mH=(Zohm\/Hz)x119.4 C1 mF=1.000.000\/(9.42xHzxZohm)<\/p>\n<p>C2 mF=1.000.000\/(3.14xHzxZohm)<\/p>\n<p><strong>Passo Basso per il Woofer<\/strong><\/p>\n<p>L2 mH=(Zohm\/Hz)x238.8<\/p>\n<p>L3 mH=(Zohm\/Hz)x79.6<\/p>\n<p>C3 mF=1.000.000\/(4.71xHzxZohm)<\/p>\n<p><em><br \/>\nZ= impedenza dell\u2019altoparlante in ohm Hz= frequenza d\u2019incrocio in Hertz<\/em><\/p>\n<p>&nbsp;<\/p>\n<p><strong><a href=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.8.jpg?ssl=1\" rel=\"attachment wp-att-418\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-418 alignleft\" src=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.8.jpg?resize=287%2C361&#038;ssl=1\" alt=\"cross.8\" width=\"287\" height=\"361\" srcset=\"https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.8.jpg?w=287&amp;ssl=1 287w, https:\/\/i0.wp.com\/www.professionistidelsuono.net\/blog_audio\/wp-content\/uploads\/2016\/02\/cross.8.jpg?resize=239%2C300&amp;ssl=1 239w\" sizes=\"auto, (max-width: 287px) 100vw, 287px\" \/><\/a>Passa Alto per Tweeter <\/strong><br \/>\nL1 mH =(Z ohm \/Hz max.) x 119,4<br \/>\nC2 mF =1.000.000\/(9,42 x Z ohm x Hz max.)<br \/>\nC2 mF =1.000.000\/(3,14 x Z ohm x Hz max.)<\/p>\n<p><strong>Passa Banda per Midrange<\/strong><br \/>\nL2 mH = (Z ohm Hz mm.) x 119,4<br \/>\nL3 mH = (Z ohm Hz max.) x 238,8<br \/>\nL4 mH = (Z ohm \/Hz max.) x 79,6<\/p>\n<p>C3 mF = 1.000.000\/(9,42 x Z ohm x Hz mm.)<br \/>\nC4 mF = 1.000.000\/(3,14 x Z ohm x Hz mm.)<br \/>\nC5 mF = 1.000.000\/(4,71 x Z ohm x Hz max.)<\/p>\n<p><strong>Passa Basso per Woofer<\/strong><\/p>\n<p>L5 mH = (Z ohm\/Hz min) x 238,8<br \/>\nL6 mH = (Zohm\/Hz min) x79.6<\/p>\n<p>C6 mF = 1.000.000\/(4,71 x Z ohm x Hz mm.)<\/p>\n<p><em>Z= impedenza dell\u2019altoparlante in ohm Hz= frequenza d\u2019incrocio in Hertz<\/em><\/p>\n<p>&nbsp;<\/p>\n<blockquote><p>\nAttenzione<br \/>\nLe formule che vi ho sopraelencati sono valide solo per carico resistivo , ovvero proprio resistenze o altoparlanti isodinamici.<br \/>\nI filtri calcolati con queste formule non garantiscono risultati corretti quando terminati su altoparlanti, ma possono essere una guida per la fase iniziale di lavoro con buoni programmi di simulazione<\/p>\n<p>Approfondimento<br \/>\nFrequenza di un fenomeno periodico con periodo di 1s. Espressa in hertz(Hz). 1Hz=1s^-1.<br \/>\nInduttanza elettrica, di una spira nella quale una variazione uniforme di intensit\u00e0 di corrente di 1Ampere\/s produce l&#8217;insorgere di una forza elettromotrice di 1volt. Espressa in henry (H), 1H=1V s\/A.<br \/>\nCapacit\u00e0 elettrica; capacit\u00e0 di un condensatore tra le cui armature appare la differenza di potenziale di 1 volt, quando su di esso \u00e8 posta una carica di un Coulomb (C). Espressa in Farad(F), 1F=1C\/V<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Formule per i calcoli Il crossover \u00e8 formato da un filtro passa-basso e un altro passa-alto.L1-L2 in millihenry = (Zohm\/ Hz) x 225 C1-C2 in mF = 1.000.000\/(8.88xHzxZ)Z= impedenza dell\u2019altoparlante in ohm Hz= frequenza&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":416,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[7,3,28,4],"tags":[78,30,115,91,131,52,37,130,55,129,132],"class_list":["post-414","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-acustica","category-car-audio","category-elettronica","category-home-hi-fi","tag-componenti","tag-condensatore","tag-crossover","tag-db","tag-due-vie","tag-home-hi-fi","tag-impianti-audio","tag-pratica","tag-suono","tag-teoria","tag-tre-vie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com 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