{"id":493,"date":"2007-09-16T20:11:44","date_gmt":"2007-09-16T19:11:44","guid":{"rendered":"http:\/\/www.evertdekker.com\/wp\/?p=493"},"modified":"2023-01-14T20:29:40","modified_gmt":"2023-01-14T19:29:40","slug":"tube-amplifier","status":"publish","type":"post","link":"https:\/\/evertdekker.com\/wp\/?p=493","title":{"rendered":"Tube amplifier"},"content":{"rendered":"<hr \/>\n<p>&nbsp;<\/p>\n<p>In 1991 I have build this Tube amplifier and now 16 years later a upgrade was neccessary. It&#8217;s not my design but from <a href=\"http:\/\/evertdekker.com\/Joomla\/images\/stories\/Downloads\/100W_Buizen_amp.pdf\" target=\"_self\" rel=\"noopener\">Radio Bulletin magazine<\/a> October 1987 by Ir.Menno van der Veen.<br \/>\nThe top plate was made from steel with a transparent coating on it, but there where some rust spots on it, so i decided to replace it with an aluminium plate. Made the design with Frontpanel designer from <a href=\"http:\/\/evertdekker.com\/Joomla\/www.schaeffer-ag.de\">Schaeffer<\/a> .<\/p>\n<p>&nbsp;<\/p>\n<div class=\"n2_ss_slider_publish__option_code\" dir=\"ltr\" data-mode=\"id\"><\/div>\n<p>&nbsp;<\/p>\n<p>Here are some specs:<br \/>\nTubes: ECC81, ECC82, 4x EL34 \u00a0(Each channel)<br \/>\nTransformers: Powersupply Amplimo toroidal 7B649, Output Amplimo toroidal XC462<br \/>\nFrequency range: 5HZ to 125kHz (-3dB, ref.1W @8\u03a9<br \/>\nContinuos output: 121W (1kHz @8\u03a9)<br \/>\nBurst output: 156W<br \/>\nTHD: 0,78% (1kHz @100W @ 8\u03a9)<br \/>\nSlewrate: 14,2V\/\u03bcs (ref.50W @80kHz sinus)<br \/>\nClass A: &lt; 16W @8\u03a9<br \/>\nClass AB: 16 to 100W @8\u03a9<br \/>\nInput: 0dBm (0,775V rms) ref.100W @8\u03a9<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; In 1991 I have build this Tube amplifier and now 16 years later a upgrade was neccessary. It&#8217;s not my design but from Radio Bulletin magazine October 1987 by Ir.Menno van der Veen. The top plate was made from steel with a transparent coating on it, but there where some rust spots on it, [&#8230;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[82,83,81],"class_list":["post-493","post","type-post","status-publish","format-standard","hentry","category-variousprojects","tag-el34","tag-menno-van-der-veen","tag-tube-amplfier"],"_links":{"self":[{"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/493","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=493"}],"version-history":[{"count":2,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/493\/revisions"}],"predecessor-version":[{"id":2154,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/493\/revisions\/2154"}],"wp:attachment":[{"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=493"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}