{"id":800,"date":"2010-11-02T10:22:37","date_gmt":"2010-11-02T16:22:37","guid":{"rendered":"http:\/\/www.muzique.com\/news\/?p=800"},"modified":"2014-04-17T07:57:00","modified_gmt":"2014-04-17T13:57:00","slug":"frequency-booster","status":"publish","type":"post","link":"http:\/\/www.muzique.com\/news\/frequency-booster\/","title":{"rendered":"Frequency Booster"},"content":{"rendered":"<p><center><img decoding=\"async\" src=\"http:\/\/www.muzique.com\/news\/images2\/ca-eq-mod.gif\" alt=\"Frequency Booster\" border=\"1\" \/><\/center><\/p>\n<p>Craig Anderton published a design many years ago for a <a href=\"http:\/\/www.muzique.com\/schem\/ca-eq.gif\">frequency booster<\/a> project that was based on a circuit that first appeared in <em>Electronotes<\/em>, as I recall. It&#8217;s a nice little EQ boost but it is not formatted properly for guitar pedal use. It is powered by two 9v batteries and needs some minor redesign to allow use with a single 9v or standard power supply.<br \/>\n<center><!--more--><\/center><br \/>\nThe schematic at the top of the article is my modified version of the original frequency booster design. A bias supply and a few other essential components have been added to adapt the circuit to 9v power. This is a simpler adaptation than the updated version that later appeared in <a href=\"http:\/\/www.muzique.com\/book.htm\">Do-it-yourself projects for Guitarists<\/a>.<\/p>\n<p>Please note that you must drive this eq circuit with a low impedance, such as an opamp output or a buffer of some sort. If you use a dual opamp, one section can be used for the buffer and the other for the equalizer.<\/p>\n<p>I suggest a starting value of 0.047uF for C1 and C2, but you should select the values depending on what frequency you want to modify, and the 100k resistor on the circuit output can be made a volume control if you need to trim back the output. Enjoy!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Craig Anderton published a design many years ago for a frequency booster project that was based on a circuit that first appeared in Electronotes, as I recall. It&#8217;s a nice little EQ boost but it is not formatted properly for guitar pedal use. It is powered by two 9v batteries and needs some minor redesign [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-800","post","type-post","status-publish","format-standard","hentry","category-diy"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Frequency Booster - AMZ-FX Guitar Effects Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.muzique.com\/news\/frequency-booster\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Frequency Booster - AMZ-FX Guitar Effects Blog\" \/>\n<meta property=\"og:description\" content=\"Craig Anderton published a design many years ago for a frequency booster project that was based on a circuit that first appeared in Electronotes, as I recall. 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