{"id":224,"date":"2012-10-22T16:07:28","date_gmt":"2012-11-19T13:10:37","guid":{"rendered":"http:\/\/homepage.univie.ac.at\/markus.breier\/php\/amp_ac\/?page_id=224"},"modified":"2026-01-13T10:59:50","modified_gmt":"2026-01-13T09:59:50","slug":"welcome","status":"publish","type":"page","link":"https:\/\/www.freebird-guitars.at\/ac30\/en\/","title":{"rendered":"Welcome!"},"content":{"rendered":"\n<p><strong><span style=\"color: #ff0000;\">WARNING and DISCLAIMER:<\/span><\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-link-color wp-elements-a677565b8d057ecd5aecb5cb7acfdc0f\" style=\"color:#fe8c8c\"><span style=\"color: #ff0000;\">The project described in these pages utilize <strong>POTENTIALLY FATAL HIGH VOLTAGES<\/strong>. If you are in any way unfamiliar with high voltage circuits or are uncomfortable working around high voltages, <strong>PLEASE DO NOT RISK YOUR LIFE BY BUILDING THEM<\/strong>. Seek help from a competent technician before building any unfamiliar electronics circuit. While efforts are made to ensure accuracy of these circuits, no guarantee is provided, of any kind!<\/span><\/p>\n\n\n\n<p class=\"has-text-color has-link-color wp-elements-58ae2312ae08f4ecf6f3473e9f14f63d\" style=\"color:#fe8c8c\"><em><strong><span style=\"color: #ff0000;\">USE AT YOUR OWN RISK:<\/span><\/strong><\/em><span style=\"color: #ff0000;\"> <\/span><span style=\"color: #ff0000;\">THE WEBMASTER, AUTHOR AND WEB SPACE PROVIDER EXPRESSLY DISCLAIM ALL LIABILITY FOR INJURY OR PROPERTY DAMAGE RESULTING FROM THIS INFORMATION!<\/span><br><strong><span style=\"color: #ff0000;\">ALL INFORMATION IS PROVIDED \u2018AS-IS\u2019 AND WITHOUT WARRANTY OF <\/span><\/strong><strong><span style=\"color: #ff0000;\">ANY KIND.<\/span><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/06\/Hero_1.jpg\" data-rel=\"lightbox-gallery-6WdKOb0C\" data-rl_title=\"\" data-rl_caption=\"Hero_1\" title=\"\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"614\" src=\"https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/06\/Hero_1-1024x614.jpg\" alt=\"\" class=\"wp-image-1281\" srcset=\"https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/06\/Hero_1-1024x614.jpg 1024w, https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/06\/Hero_1-300x180.jpg 300w, https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/06\/Hero_1.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/12\/AC30_Chassis_01-scaled.jpg\" data-rel=\"lightbox-gallery-6WdKOb0C\" data-rl_title=\"\" data-rl_caption=\"AC30_Chassis_01\" title=\"\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/12\/AC30_Chassis_01-1024x683.jpg\" alt=\"\" class=\"wp-image-1300\" srcset=\"https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/12\/AC30_Chassis_01-1024x683.jpg 1024w, https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/12\/AC30_Chassis_01-300x200.jpg 300w, https:\/\/www.freebird-guitars.at\/ac30\/wp-content\/uploads\/2025\/12\/AC30_Chassis_01-2000x1333.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>I always loved the sound of a guitar through a Vox AC30 amplifier. The guitarists of my favourite bands play such amplifiers. (Brian May of Queen and The Edge of U2)<\/p>\n\n\n\n<p>Although there are affordable Reissues of the AC30, my interest in DIY led me to try to build one myself.<\/p>\n\n\n\n<p>I am no electrical engeneer, but I am able to wield a soldering iron and have elementary knowledge of electrics. I only built one amp before the AC30, a <a href=\"http:\/\/www.musikding.de\/Kits\/Madamp-Kits\/Kit-Madamp-A15Mk2-deluxe::1205.html\">Madamp A15<\/a>, a kit with a very detailed set of instructions.<\/p>\n\n\n\n<p>When I saw an AC30 clone by Martin Winterfeld at the Tube-Town Site, I found that it was less complex than the Madamp. So I decided to build my own clone based on his plans and the Hoffmann layout.<\/p>\n\n\n\n<p>However, the amp presented here is the third rebuild of the amp, using a different and optimized layout, which is based on the current AC30HW (2010)<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Last content-related update: January 2014, minor changes May 2025.<\/p>\n\n\n\n<p><strong>The information provided on this website is all the information that can be provided by me. It is compiled from various sources and complemented by me. I am not an amp designer or otherwise trained as an electrical engineer. Therefore, I am not able to provide help with modifications or trouble-shooting. <\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>WARNING and DISCLAIMER: The project described in these pages utilize POTENTIALLY FATAL HIGH VOLTAGES. If you are in any way unfamiliar with high voltage circuits or are uncomfortable working around high voltages, PLEASE DO NOT RISK YOUR LIFE BY BUILDING THEM. Seek help from a competent technician before building any unfamiliar electronics circuit. While efforts &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.freebird-guitars.at\/ac30\/en\/\" class=\"more-link\">Mehr <span class=\"screen-reader-text\">\u00fcber &#8222;Welcome!&#8220; <\/span>Lesen<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-224","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.freebird-guitars.at\/ac30\/wp-json\/wp\/v2\/pages\/224","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.freebird-guitars.at\/ac30\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.freebird-guitars.at\/ac30\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.freebird-guitars.at\/ac30\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.freebird-guitars.at\/ac30\/wp-json\/wp\/v2\/comments?post=224"}],"version-history":[{"count":26,"href":"https:\/\/www.freebird-guitars.at\/ac30\/wp-json\/wp\/v2\/pages\/224\/revisions"}],"predecessor-version":[{"id":1320,"href":"https:\/\/www.freebird-guitars.at\/ac30\/wp-json\/wp\/v2\/pages\/224\/revisions\/1320"}],"wp:attachment":[{"href":"https:\/\/www.freebird-guitars.at\/ac30\/wp-json\/wp\/v2\/media?parent=224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}