{"id":1145,"date":"2012-04-11T22:48:52","date_gmt":"2012-04-11T20:48:52","guid":{"rendered":"http:\/\/www.anafrog.com\/?p=1145"},"modified":"2015-04-19T12:54:57","modified_gmt":"2015-04-19T10:54:57","slug":"cotk-vcf-passe-bas-c904a","status":"publish","type":"post","link":"http:\/\/www.anafrog.com\/?p=1145","title":{"rendered":"COTK &#8211; VCF passe-bas C904A"},"content":{"rendered":"<h1><span style=\"color: #000000; font-size: 18px; font-weight: bold; line-height: 18px;\">Avis<\/span><\/h1>\n<h3 style=\"font-weight: bold;\"><\/h3>\n<p style=\"font-weight: bold; text-align: justify;\"><span style=\"font-size: 13px; color: #292929; font-weight: normal; line-height: 18px;\"><span style=\"color: #000000;\">Voici le clone du fameux filtre<\/span> <span style=\"color: #000000;\">\u00e0 \u00e9chelle de Moog qui a fait la gloire de son concepteur<\/span> <span style=\"color: #000000;\">et dont le son constitue une des r\u00e9f\u00e9rences de la musique<\/span> <span style=\"color: #000000;\">\u00e9lectronique. J&rsquo;ai eu la possibilt\u00e9 d&rsquo;essayer un<\/span> <span style=\"color: #000000;\">authentique <span style=\"font-weight: bold;\">904A<\/span> et je dois<\/span> <span style=\"color: #000000;\">dire que le <span style=\"font-weight: bold;\">C904A<\/span> est une<\/span> <span style=\"color: #000000;\">parfaite copie de l&rsquo;original. M\u00eame comportement, m\u00eame grain<\/span> <span style=\"color: #000000;\">sonore, m\u00eame punch !<\/span><\/span><\/p>\n<div style=\"text-align: justify;\"><span style=\"color: #000000; font-size: 18px;\">Descriptif<\/span><\/div>\n<h4 style=\"font-style: italic; color: #ffff33;\"><span style=\"color: #000000;\">La<\/span> <span style=\"color: #000000;\">fa\u00e7ade<\/span><\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-1146\" title=\"C904A-front\" src=\"http:\/\/www.anafrog.com\/wp-content\/uploads\/2012\/04\/C904A-front.jpg\" alt=\"\" width=\"275\" height=\"296\" \/><\/p>\n<div style=\"text-align: justify;\">\n<p><span style=\"color: #000000;\">Pour ce qui est de<\/span> <span style=\"color: #000000;\">l&rsquo;apparence, la fa\u00e7ade du <span style=\"font-weight: bold;\">C904A <\/span><\/span><span style=\"color: #000000;\">se pr\u00e9sente comme celle<\/span> <span style=\"color: #000000;\">du 904A original et la seule diff\u00e9rence r\u00e9side dans le<\/span> <span style=\"color: #000000;\">logo au bas de la fa\u00e7ade. Les boutons sont au nombre de trois : <\/span><\/p>\n<p><span style=\"color: #000000;\"> &#8211; un mod\u00e8le large (\u00e9tiquet\u00e9 <span style=\"font-style: italic;\">FIXED CONTROL VOLTAGE<\/span>) situ\u00e9<\/span> <span style=\"color: #000000;\">en haut et au milieu, gradu\u00e9 de -6 \u00e0 +6, pour<\/span> <span style=\"color: #000000;\">contr\u00f4ler la fr\u00e9quence de coupure sur une large gamme,<\/span> <span style=\"color: #000000;\">personnellement j&rsquo;appr\u00e9cie particuli\u00e8rement la taille de<\/span> <span style=\"color: #000000;\">ce bouton que l&rsquo;on a bien en main et qui permet un r\u00e9glage fin,<\/span> <span style=\"color: #000000;\">la gamme de r\u00e9glage s&rsquo;\u00e9tend sur environ 11 octaves<\/span><\/p>\n<p><span style=\"color: #000000;\"> &#8211; un mod\u00e8le standard (\u00e9tiquet\u00e9 <span style=\"font-style: italic;\">REGENERATION<\/span>) situ\u00e9 sur la<\/span> <span style=\"color: #000000;\">droite pour contr\u00f4ler la r\u00e9sonance qui au minimum<\/span> <span style=\"color: #000000;\">correspond \u00e0 une r\u00e9ponse classique de Butterworth<\/span> <span style=\"color: #000000;\">(att\u00e9nuation de -3dB \u00e0 la fr\u00e9quence de coupure) et<\/span> <span style=\"color: #000000;\">au maximum correspond \u00e0 un mode d&rsquo;auto-oscillation (sinus)<\/span><\/p>\n<p><span style=\"color: #000000;\"> &#8211; un mod\u00e8le pointeur (\u00e9tiquet\u00e9 FREQUENCY RANGE)<\/span> <span style=\"color: #000000;\">situ\u00e9 sur la gauche qui permet de transposer la plage de<\/span> <span style=\"color: #000000;\">r\u00e9glage de fr\u00e9quence de plus (position 3) ou moins deux<\/span> <span style=\"color: #000000;\">octaves (position 1).<\/span><\/p>\n<p><span style=\"color: #000000;\">En dessous on trouve 5 socles jacks organis\u00e9s sur deux lignes<\/span> <span style=\"color: #000000;\">horizontales : <\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\"> un jack <span style=\"font-style: italic;\">SIGNAL IN <\/span><\/span><span style=\"color: #000000;\">situ\u00e9 \u00e0 gauche et acceptant un signal d&rsquo;entr\u00e9e au<\/span> <span style=\"color: #000000;\">niveau de 0dBm avec un seuil de saturation se situant au alentour de<\/span> <span style=\"color: #000000;\">+10dBm<\/span><\/li>\n<li><span style=\"color: #000000;\"> un jack <span style=\"font-style: italic;\">SIGNAL OUT <\/span><\/span><span style=\"color: #000000;\">situ\u00e9 \u00e0 droite pour la sortie du signal avec un niveau de<\/span> <span style=\"color: #000000;\">0dBm pour une r\u00e9sonance de 0<\/span><\/li>\n<li><span style=\"color: #000000;\"> un groupe de trois jacks <span style=\"font-style: italic;\">CONTROL VOLTAGES<\/span> qui acceptent des<\/span> <span style=\"color: #000000;\">tensions de contr\u00f4le en V\/octave<\/span><\/li>\n<\/ul>\n<\/div>\n<h4 style=\"font-style: italic; color: #ffff33;\"><span style=\"color: #000000;\">Le<\/span> <span style=\"color: #000000;\">bo\u00eetier<\/span><\/h4>\n<div style=\"text-align: justify;\">\n<p><span style=\"color: #000000;\">A l&rsquo;arri\u00e8re,<\/span> <span style=\"color: #000000;\">le module est ferm\u00e9 par un<\/span> <span style=\"color: #000000;\">petit bo\u00eetier de fer blanc<\/span><\/p>\n<p>&nbsp;<\/p>\n<h1 style=\"font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; color: #0a0a0a; line-height: 1.5em; font-size: 2.4em; margin-top: 0px; margin-right: 0px; margin-bottom: 20px; margin-left: 0px; font-weight: normal;\"><a style=\"font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; color: #cc6216; line-height: 18px;\" href=\"http:\/\/www.anafrog.com\/?attachment_id=1147\" rel=\"attachment wp-att-1147\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-1147\" style=\"font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; color: #292929; line-height: 18px; margin-top: 4px; margin-right: 0px; margin-bottom: 12px; margin-left: 24px; max-width: 640px; float: right; display: inline; background-color: transparent; border: 0px initial initial;\" title=\"C904A-back\" src=\"http:\/\/www.anafrog.com\/wp-content\/uploads\/2012\/04\/C904A-back.jpg\" alt=\"\" width=\"275\" height=\"296\" \/><\/a><\/h1>\n<p><span style=\"color: #000000;\">. Une ouverture est <\/span><span style=\"color: #000000;\">m\u00e9nag\u00e9e en haut \u00e0 droite qui donne acc\u00e8s<\/span> <span style=\"color: #000000;\">\u00e0 :<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\"> un connecteur m\u00e2le standardis\u00e9 <span style=\"font-style: italic;\">HE10<\/span> 2&#215;7 broches destin\u00e9 <\/span><span style=\"color: #000000;\">\u00e0 recevoir le ruban d&rsquo;alimentation standard (fourni avec le <\/span><span style=\"color: #000000;\">module)<\/span><\/li>\n<li><span style=\"color: #000000;\"> un petit connecteur femelle trois broches pour la<\/span> <span style=\"color: #000000;\">connexion en interne avec les modules compagnons <span style=\"font-weight: bold;\">C904B<\/span> et <span style=\"font-weight: bold;\">C904C<\/span>.<\/span><span style=\"font-family: Georgia, 'Times New Roman', 'Bitstream Charter', Times, serif; font-size: 13px; line-height: 19px;\"><span style=\"font-family: Georgia, 'Times New Roman', 'Bitstream Charter', Times, serif; font-size: 13px; line-height: 19px;\"><br \/>\n<\/span><\/span>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/li>\n<\/ul>\n<h4 style=\"font-style: italic; color: #000000;\"><span style=\"color: #000000;\">L&rsquo;\u00e9lectronique<\/span><\/h4>\n<p>L&rsquo;\u00e9lectronique est de bonne qualit\u00e9, le circuit est un cl\u00f4ne de l&rsquo;original avec comme diff\u00e9rences : les transistors discrets ont \u00e9t\u00e9 remplac\u00e9s par des r\u00e9seaux de transistors de haute qualit\u00e9 (<span style=\"font-weight: bold;\">THAT corporation<\/span>). L&rsquo;avantage est qu&rsquo;\u00e9lectroniquement c&rsquo;est identique \u00e0 l&rsquo;original mais en plus assure le bon appariement des transistors impliqu\u00e9s dans l&rsquo;\u00e9chelle de Moog.<\/p>\n<p>Comme pour les autres modules <span style=\"font-weight: bold;\">COTK <\/span> (et c&rsquo;est un tr\u00e8s bon point) le module poss\u00e8de ses propres r\u00e9gulateurs de tension pour l&rsquo;alimentation, ce qui d&rsquo;une part assure une bonne stabilisation \u00e9lectrique mais \u00e9galement une excellente isolation \u00e9lectrique qui r\u00e9duit tr\u00e8s fortement les risques d&rsquo;interf\u00e9rences avec les autres modules via les lignes d&rsquo;alimentation. C&rsquo;est une excellente chose pour am\u00e9liorer le rapport signal\/bruit.<\/p>\n<p><span style=\"color: #000000; font-size: 18px;\">Contr\u00f4leurs <\/span><span style=\"color: #000000; font-size: 18px;\">et <\/span><span style=\"color: #000000; font-size: 18px;\">connexions <\/span><\/p>\n<\/div>\n<table style=\"width: 100%; text-align: left;\" border=\"0\" cellspacing=\"2\" cellpadding=\"2\">\n<tbody>\n<tr>\n<td style=\"vertical-align: top; color: #ffffff; font-weight: bold; background-color: #ffcc66;\"><span style=\"color: #000000;\">FIXED CONTROL VOLTAGE<\/span><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">r\u00e9glage du glissement<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; color: #000000; font-weight: bold; background-color: #ffcc66;\"><span style=\"color: #000000;\">REGENERATION<\/span><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">gammes de glissement<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; color: #000000; font-weight: bold; background-color: #ffcc66;\"><span style=\"color: #000000;\">FREQUENCY RANGE<\/span><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">m\u00e9lange des bandes lat\u00e9rales<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; color: #000000; font-weight: bold; background-color: #ffcc66;\"><span style=\"color: #000000;\">SIGNAL IN<\/span><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">niveau du silencieux<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; color: #000000; font-weight: bold; background-color: #ffcc66;\"><span style=\"color: #000000;\">SIGNAL OUT<\/span><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">r\u00e9glage de la fr\u00e9quence z\u00e9ro (pas de glissement)<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; color: #000000; font-weight: bold; background-color: #ffcc66;\"><span style=\"color: #000000;\">CONTROL INPUTS<\/span><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">entr\u00e9e du signal audio \u00e0 traiter<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h3 style=\"color: #ffff33;\"><span style=\"color: #000000;\">Sp\u00e9cifications<\/span> <span style=\"color: #000000;\">techniques<\/span><\/h3>\n<table style=\"width: 100%; text-align: left;\" border=\"0\" cellspacing=\"2\" cellpadding=\"2\">\n<tbody>\n<tr>\n<td style=\"vertical-align: top; background-color: #ffcc66;\"><strong><span style=\"color: #000000;\">Encombrement<\/span><\/strong><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">Double largeur 10,2cm x 22,25cm.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; background-color: #ffcc66;\"><strong><span style=\"color: #000000;\">Alimentation<\/span><\/strong><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">+12V\/-12V par connecteur HE10 2&#215;7 broches<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; background-color: #ffcc66;\"><strong><span style=\"color: #000000;\">Niveau d&rsquo;entr\u00e9e<\/span><\/strong><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">0 dBm (1Vcc) optimal, saturation \u00e0 partir de +10 dBm (environ 3Vcc)<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; background-color: #ffcc66;\"><strong><span style=\"color: #000000;\">Niveau de sortie<\/span><\/strong><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">0 dBm pour 0 dBm en entr\u00e9e<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; background-color: #ffcc66;\"><strong><span style=\"color: #000000;\">Niveaux de contr\u00f4les<\/span><\/strong><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">0V \u00e0 10V<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; background-color: #ffcc66;\"><strong><span style=\"color: #000000;\">Plage de r\u00e9glage<\/span><\/strong><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">11 octaves<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; background-color: #ffcc66;\"><strong><span style=\"color: #000000;\">Gamme de r\u00e9glages<\/span><\/strong><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">1Hz \u00e0 5kHz, 4Hz \u00e0 20 kHz et 16 Hz \u00e0 80kHz<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; background-color: #ffcc66;\"><strong><span style=\"color: #000000;\">R\u00e9sonance<\/span><\/strong><\/td>\n<td style=\"vertical-align: top; background-color: #ffffcc;\"><span style=\"color: #000000;\">r\u00e9ponse butterworth \u00e0 0, auto-oscillation \u00e0 partir de 9<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color: #000000;\"> Prix : <span style=\"font-style: italic;\">205 \u20ac (dec.2007)<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #000000;\">Remarques<\/span><\/h3>\n<h3><span style=\"font-size: 14px; color: #292929; line-height: 18px;\"><span style=\"color: #000000;\">Une fois associ\u00e9 au <span style=\"font-weight: bold;\">C904B<\/span> et <span style=\"font-weight: bold;\">C904C<\/span> on se trouve en face de la<\/span> <span style=\"color: #000000;\">fameuse triade de filtrage du <span style=\"font-weight: bold;\">Moog 55 <\/span><\/span><span style=\"color: #000000;\">!<\/span><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"color: #000000; font-size: 18px;\">Des sons<\/span><\/p>\n<table style=\"width: 100%; text-align: left;\" border=\"0\" cellspacing=\"2\" cellpadding=\"2\">\n<tbody>\n<tr>\n<td style=\"vertical-align: top; text-align: center; background-color: #9999ff;\"><span style=\"font-weight: bold;\">TITRE<\/span><\/td>\n<td style=\"vertical-align: top; text-align: center; background-color: #9999ff;\"><span style=\"font-weight: bold;\">DESCRIPTIF<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: middle; background-color: #ccffff;\">&#8230;<\/td>\n<td style=\"vertical-align: middle; text-align: justify; background-color: #ccffff;\"><span style=\"font-style: italic;\">&#8230;<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: middle; background-color: #ccffff;\"><\/td>\n<td style=\"vertical-align: middle; background-color: #ccffff;\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color: #ff6600;\">Note pour les grincheux : les donn\u00e9es de cette<\/span><span style=\"color: #ff6600;\"> <span style=\"color: #ff6600;\">fiche n&rsquo;engagent en rien le fabricant ou les distributeurs des<\/span><\/span><span style=\"color: #ff6600;\"> <span style=\"color: #ff6600;\">produits qui sont d\u00e9crits ici. Les avis exprim\u00e9s ici sont<\/span><\/span><span style=\"color: #ff6600;\"> <span style=\"color: #ff6600;\">personnels et se fondent sur mon exp\u00e9rience et sur mes<\/span><\/span><span style=\"color: #ff6600;\"> <span style=\"color: #ff6600;\">go\u00fbts. Ils n&rsquo;engagent que moi et ne peuvent en aucun cas<\/span><\/span><span style=\"color: #ff6600;\"> <span style=\"color: #ff6600;\">\u00eatre utilis\u00e9s en partie ou compl\u00e8tement comme<\/span><\/span><span style=\"color: #ff6600;\"> <span style=\"color: #ff6600;\">justificatif de toute d\u00e9marche commerciale ou judiciaire. <\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Avis Voici le clone du fameux filtre \u00e0 \u00e9chelle de Moog qui a fait la gloire de son concepteur et dont le son constitue une des r\u00e9f\u00e9rences de la musique <span class=\"excerpt-dots\">&hellip;<\/span> <a class=\"more-link\" href=\"http:\/\/www.anafrog.com\/?p=1145\"><span class=\"more-msg\">Lire la suite &rarr;<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-1145","post","type-post","status-publish","format-standard","hentry","category-modul"],"_links":{"self":[{"href":"http:\/\/www.anafrog.com\/index.php?rest_route=\/wp\/v2\/posts\/1145","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.anafrog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.anafrog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.anafrog.com\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"http:\/\/www.anafrog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1145"}],"version-history":[{"count":8,"href":"http:\/\/www.anafrog.com\/index.php?rest_route=\/wp\/v2\/posts\/1145\/revisions"}],"predecessor-version":[{"id":1535,"href":"http:\/\/www.anafrog.com\/index.php?rest_route=\/wp\/v2\/posts\/1145\/revisions\/1535"}],"wp:attachment":[{"href":"http:\/\/www.anafrog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.anafrog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1145"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.anafrog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}