{"id":39,"date":"2015-09-01T17:15:00","date_gmt":"2015-09-01T17:15:00","guid":{"rendered":"https:\/\/rerunelectronicscom.wordpress.com\/2015\/09\/01\/the-golden-beetle-tube-vocal-preamplifier-with-effects"},"modified":"2018-11-13T21:10:58","modified_gmt":"2018-11-13T21:10:58","slug":"the-golden-beetle-tube-vocal-preamplifier-with-effects","status":"publish","type":"post","link":"http:\/\/rerun-electronics.com\/?p=39","title":{"rendered":"The Golden Beetle Tube Vocal Preamplifier with Effects"},"content":{"rendered":"\n<ul class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1\"><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/rerun-electronics.com\/wp-content\/uploads\/2018\/11\/side13-Kopie.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"http:\/\/rerun-electronics.com\/wp-content\/uploads\/2018\/11\/side13-Kopie.jpg\" alt=\"\" data-id=\"2061\" data-link=\"http:\/\/rerun-electronics.com\/?attachment_id=2061\" class=\"wp-image-2061\" srcset=\"http:\/\/rerun-electronics.com\/wp-content\/uploads\/2018\/11\/side13-Kopie.jpg 1024w, http:\/\/rerun-electronics.com\/wp-content\/uploads\/2018\/11\/side13-Kopie-300x169.jpg 300w, http:\/\/rerun-electronics.com\/wp-content\/uploads\/2018\/11\/side13-Kopie-768x432.jpg 768w\" sizes=\"auto, (max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/rerun-electronics.com\/wp-content\/uploads\/2015\/09\/front22\u2022.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"835\" height=\"412\" src=\"http:\/\/rerun-electronics.com\/wp-content\/uploads\/2015\/09\/front22\u2022.jpg\" alt=\"\" data-id=\"1923\" data-link=\"http:\/\/rerun-electronics.com\/?attachment_id=1923\" class=\"wp-image-1923 is-layout-flex wp-block-gallery-is-layout-flex\" srcset=\"http:\/\/rerun-electronics.com\/wp-content\/uploads\/2015\/09\/front22\u2022.jpg 835w, http:\/\/rerun-electronics.com\/wp-content\/uploads\/2015\/09\/front22\u2022-300x148.jpg 300w, http:\/\/rerun-electronics.com\/wp-content\/uploads\/2015\/09\/front22\u2022-768x379.jpg 768w\" sizes=\"auto, (max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px\" \/><\/a><\/figure><\/li><\/ul>\n\n\n<div class=\"separator\" style=\"clear: both; text-align: left;\"><i>Built for Sarah Bolen<\/i><\/div>\n<div class=\"separator\" style=\"clear: both; text-align: left;\"><i>&nbsp;<\/i><\/div>\n<div class=\"separator\" style=\"clear: both; text-align: left;\">The Golden Beetle began its life long ago as an Echolette guitar amplifier. &nbsp;Unfortunately, when I received the chassis, both transformers were shot and heat damage to the PCB board made the unit irreparable. &nbsp;Of course, the next best option is always to repurpose the case and here it has become a vocal preamplifier.<\/div>\n<div class=\"separator\" style=\"clear: both; text-align: left;\">&nbsp;<\/div>\n<div class=\"separator\" style=\"clear: both; text-align: left;\">The first stage uses a pentode tube and 1:10 transformer to bring the signal to line level. &nbsp;From here it is mixed with an instrument input and sent in parallel to various outputs via a cathode follower. &nbsp;The parallel mixing allows the clean signal of the vocal to always stay true while adding distortion and reverb or delay. &nbsp;As well, there is an option to add external effects for extra options. &nbsp;<\/div>\n<div class=\"separator\" style=\"clear: both; text-align: left;\">&nbsp;<\/div>\n<div class=\"separator\" style=\"clear: both; text-align: left;\">From here the signals are brought together via the individual level controls and a virtual earth mixer which feeds the equalizer section. &nbsp;Finally, there is a paralleled ECC82 output section to drive the transformer for a low impedance balanced output. &nbsp;<\/div>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Built for Sarah Bolen &nbsp; The Golden Beetle began its life long ago as an Echolette guitar amplifier. &nbsp;Unfortunately, when I received the chassis, both transformers were shot and heat damage to the PCB board made the unit irreparable. &nbsp;Of course, the next best option is always to repurpose the case and here it has &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/rerun-electronics.com\/?p=39\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;The Golden Beetle Tube Vocal Preamplifier with Effects&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":1923,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"image","meta":{"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[4,7],"tags":[],"class_list":["post-39","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-effects","category-microphone-preampflifiers","post_format-post-format-image"],"author_meta":{"display_name":"rerun","author_link":"http:\/\/rerun-electronics.com\/author\/rerun"},"featured_img":"http:\/\/rerun-electronics.com\/wp-content\/uploads\/2015\/09\/front22\u2022-300x148.jpg","jetpack_publicize_connections":[],"jetpack_featured_media_url":"http:\/\/rerun-electronics.com\/wp-content\/uploads\/2015\/09\/front22\u2022.jpg","coauthors":[],"tax_additional":{"categories":{"linked":["<a href=\"http:\/\/rerun-electronics.com\/?cat=4\" class=\"advgb-post-tax-term\">Effects<\/a>","<a href=\"http:\/\/rerun-electronics.com\/?cat=7\" class=\"advgb-post-tax-term\">Microphone Preampflifiers<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">Effects<\/span>","<span class=\"advgb-post-tax-term\">Microphone Preampflifiers<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 11 years ago","modified":"Updated 7 years ago"},"absolute_dates":{"created":"Posted on 2015-09-01","modified":"Updated on 2018-11-13"},"absolute_dates_time":{"created":"Posted on 2015-09-01 17:15","modified":"Updated on 2018-11-13 21:10"},"featured_img_caption":"","series_order":"","jetpack_sharing_enabled":false,"jetpack_shortlink":"https:\/\/wp.me\/papHjQ-D","_links":{"self":[{"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=\/wp\/v2\/posts\/39","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=39"}],"version-history":[{"count":6,"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=\/wp\/v2\/posts\/39\/revisions"}],"predecessor-version":[{"id":2460,"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=\/wp\/v2\/posts\/39\/revisions\/2460"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=\/wp\/v2\/media\/1923"}],"wp:attachment":[{"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=39"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=39"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/rerun-electronics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=39"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}