{"id":24448,"date":"2011-09-14T15:14:02","date_gmt":"2011-09-14T22:14:02","guid":{"rendered":"http:\/\/9n2.ac0.myftpupload.com\/1313\/?p=3253"},"modified":"2011-09-14T15:14:02","modified_gmt":"2011-09-14T22:14:02","slug":"sum-comparison","status":"publish","type":"post","link":"https:\/\/ericbeam.com\/?p=24448","title":{"rendered":"Sum Comparison"},"content":{"rendered":"<p>Got my hands on a pair of JCF LEVRs. I wanted to see how they compare to my usual &#8220;go to&#8221; API 312 for makeup gain after the folcrom. After a week of pulling my hair out trying to get the LEVRs to play nice with my setup, (more on that later) they do have a nice presence that sets them apart.<!--more--><\/p>\n<p>For this comparison I mixed a quick ITB drum mix. Then sent the individual drum channels (16) to the FOLCROM\/One of the listed makeup gain amplifiers.<br \/>\nWhat do you prefer out of the group?<br \/>\n<a href=\"https:\/\/ericbeam.com\/wp-content\/uploads\/2011\/09\/312-pre.wav\">312 pre<\/a><\/p>\n<p><div class=\"wavesurfer-block wavesurfer-audio\"><div class=\"wavesurfer-player\" data-wave-color=\"#000000\" data-cursor-color=\"#dddddd\" data-progress-color=\"#ededed\" data-height=\"127\" data-url=\"https:\/\/ericbeam.com\/wp-content\/uploads\/2011\/09\/312-pre.wav\"><\/div><div class=\"wavesurfer-progress\"><progress class=\"wavesurfer-loading\" value=\"0\" max=\"100\"><\/progress><\/div><div class=\"wavesurfer-buttons_set\"><button type=\"button\" class=\"wavesurfer-play\"><span>Play<\/span><\/button><button type=\"button\" class=\"wavesurfer-stop\"><span>Stop<\/span><\/button><div class=\"wavesurfer-time\"><\/div><div class=\"wavesurfer-duration\"><\/div><\/div><\/div><br \/>\n<a href=\"https:\/\/ericbeam.com\/wp-content\/uploads\/2011\/09\/LEVR-with-Transformer.wav\">LEVR with Transformer<\/a><\/p>\n<p><div class=\"wavesurfer-block wavesurfer-audio\"><div class=\"wavesurfer-player\" data-wave-color=\"#000000\" data-cursor-color=\"#dddddd\" data-progress-color=\"#ededed\" data-height=\"127\" data-url=\"https:\/\/ericbeam.com\/wp-content\/uploads\/2011\/09\/LEVR-with-Transformer.wav\"><\/div><div class=\"wavesurfer-progress\"><progress class=\"wavesurfer-loading\" value=\"0\" max=\"100\"><\/progress><\/div><div class=\"wavesurfer-buttons_set\"><button type=\"button\" class=\"wavesurfer-play\"><span>Play<\/span><\/button><button type=\"button\" class=\"wavesurfer-stop\"><span>Stop<\/span><\/button><div class=\"wavesurfer-time\"><\/div><div class=\"wavesurfer-duration\"><\/div><\/div><\/div><br \/>\n<a href=\"https:\/\/ericbeam.com\/wp-content\/uploads\/2011\/09\/LEVR-no-Transformer.wav\">LEVR no Transformer<\/a><\/p>\n<p><div class=\"wavesurfer-block wavesurfer-audio\"><div class=\"wavesurfer-player\" data-wave-color=\"#000000\" data-cursor-color=\"#dddddd\" data-progress-color=\"#ededed\" data-height=\"127\" data-url=\"https:\/\/ericbeam.com\/wp-content\/uploads\/2011\/09\/LEVR-no-Transformer.wav\"><\/div><div class=\"wavesurfer-progress\"><progress class=\"wavesurfer-loading\" value=\"0\" max=\"100\"><\/progress><\/div><div class=\"wavesurfer-buttons_set\"><button type=\"button\" class=\"wavesurfer-play\"><span>Play<\/span><\/button><button type=\"button\" class=\"wavesurfer-stop\"><span>Stop<\/span><\/button><div class=\"wavesurfer-time\"><\/div><div class=\"wavesurfer-duration\"><\/div><\/div><\/div><br \/>\n<a href=\"https:\/\/ericbeam.com\/wp-content\/uploads\/2011\/09\/ITB.wav\">ITB<\/a><\/p>\n<div class=\"wavesurfer-block wavesurfer-audio\"><div class=\"wavesurfer-player\" data-wave-color=\"#000000\" data-cursor-color=\"#dddddd\" data-progress-color=\"#ededed\" data-height=\"127\" data-url=\"https:\/\/ericbeam.com\/wp-content\/uploads\/2011\/09\/ITB.wav\"><\/div><div class=\"wavesurfer-progress\"><progress class=\"wavesurfer-loading\" value=\"0\" max=\"100\"><\/progress><\/div><div class=\"wavesurfer-buttons_set\"><button type=\"button\" class=\"wavesurfer-play\"><span>Play<\/span><\/button><button type=\"button\" class=\"wavesurfer-stop\"><span>Stop<\/span><\/button><div class=\"wavesurfer-time\"><\/div><div class=\"wavesurfer-duration\"><\/div><\/div><\/div>\n<p>As I said it was a bitch getting the LEVRs setup properly. I noticed severe distortions when the LEVR received signals for most of my converters\/outboard. LOOONG story short LEVRs with the transformer output option need to see &#8220;symmetrical balanced&#8221; signals. Many balanced devices only send signal down the + leg. This for some unknown reason really makes the LEVR with the output transformer unhappy. Thanks to the help of Bill Whitlock &amp; my curiosity I found two solutions.<\/p>\n<ol>\n<li>Add transformers before the LEVR. Bill recommend the JT-MB-CA<\/li>\n<li>Disable the output transformer.<\/li>\n<\/ol>\n<p>I&#8217;ve tried both &amp; opted for solution 2.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Got my hands on a pair of JCF LEVRs. I wanted to see how they<\/p>\n<div class=\"more-link-wrapper\"><a class=\"more-link\" href=\"https:\/\/ericbeam.com\/?p=24448\">Read the post<span class=\"screen-reader-text\">Sum Comparison<\/span><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_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_post_was_ever_published":false},"categories":[3,5],"tags":[239,238,115],"class_list":["post-24448","post","type-post","status-publish","format-standard","hentry","category-analysis","category-hardware","tag-api-312","tag-jcf-levr","tag-summing","excerpt","zoom","full-without-featured","even","excerpt-0"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":24427,"url":"https:\/\/ericbeam.com\/?p=24427","url_meta":{"origin":24448,"position":0},"title":"Pro Tools 3rd Party interface record offset. Explained by Dead Man Johnson&#8230;","author":"Eric","date":"August 4, 2011","format":false,"excerpt":"Ever wonder why the timing of what you record sounds so off? Or why you get phase problems while parallel processing out of the box? Well you might just have horrible timing, or you might need to figure out your I\/O offsets.\u00a0 A\/D D\/A's, drivers, & software can all contribute\u2026","rel":"","context":"In &quot;Ticks, Tips, &amp; Tricks&quot;","block_context":{"text":"Ticks, Tips, &amp; Tricks","link":"https:\/\/ericbeam.com\/?cat=10"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2025\/03\/pro-tools-3rd-party-interface-re.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2025\/03\/pro-tools-3rd-party-interface-re.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2025\/03\/pro-tools-3rd-party-interface-re.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2025\/03\/pro-tools-3rd-party-interface-re.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2025\/03\/pro-tools-3rd-party-interface-re.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":24593,"url":"https:\/\/ericbeam.com\/?p=24593","url_meta":{"origin":24448,"position":1},"title":"Purple Audio MC77 \/ Hairball Rev A comparison.","author":"Eric","date":"August 6, 2017","format":false,"excerpt":"Purple Audio MC77 and a Hairball Rev A smashing a soloed kick. Download .wav\u00a0files Kick Rev A 12to1-RXLoud_01 Kick Rev A All in -RXLoud_01 Kick MC77 12to1-RXLoud_01 Kick MC77 All in -RXLoud_01","rel":"","context":"In &quot;Analysis&quot;","block_context":{"text":"Analysis","link":"https:\/\/ericbeam.com\/?cat=3"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2017\/08\/IMG_20170805_121132-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2017\/08\/IMG_20170805_121132-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2017\/08\/IMG_20170805_121132-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2017\/08\/IMG_20170805_121132-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2017\/08\/IMG_20170805_121132-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2017\/08\/IMG_20170805_121132-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":24466,"url":"https:\/\/ericbeam.com\/?p=24466","url_meta":{"origin":24448,"position":2},"title":"DIY &#8211; RM-5 Ribbon Mic Build","author":"Eric","date":"May 2, 2012","format":false,"excerpt":"So a few weeks back I snagged this ribbon mic kit over at www.diyrecordingequipment.com Really simple nice sounding mic. Highly recommend Artur\u2019s \"official\" retail RM-5 for anyone looking to get their hands on one of these. After it was wired up, I pulled a few coworkers into a booth to\u2026","rel":"","context":"In &quot;Hardware&quot;","block_context":{"text":"Hardware","link":"https:\/\/ericbeam.com\/?cat=5"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2012\/05\/6991295952_5c6bda6ce1_c.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2012\/05\/6991295952_5c6bda6ce1_c.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2012\/05\/6991295952_5c6bda6ce1_c.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":24462,"url":"https:\/\/ericbeam.com\/?p=24462","url_meta":{"origin":24448,"position":3},"title":"Evil toy piano shootout","author":"Eric","date":"March 16, 2012","format":false,"excerpt":"As posted via recordinghacks.com I recently scored this wonderful, but horribly pink toy piano. I found this to be a perfect opportunity to experiment with a few mic techniques. That, and I can never turn down the opportunity for over-the-top ridiculousness. I decided to try out a pair of 414s,\u2026","rel":"","context":"In &quot;Daily Noize&quot;","block_context":{"text":"Daily Noize","link":"https:\/\/ericbeam.com\/?cat=4"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2012\/03\/6970209961_5b7b35f9cb_c.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2012\/03\/6970209961_5b7b35f9cb_c.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2012\/03\/6970209961_5b7b35f9cb_c.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":24559,"url":"https:\/\/ericbeam.com\/?p=24559","url_meta":{"origin":24448,"position":4},"title":"LIGO Gravitational Waves","author":"Eric","date":"February 15, 2016","format":false,"excerpt":"LIGO recently\u00a0detected\u00a0gravitational waves & uploaded some audio examples. The original audio is available\u00a0here http:\/\/www.ligo.org\/science\/GW-Sources.php & \u00a0http:\/\/www.ligo.org\/science\/GW-Overview\/sounds\/ I was inspired by the finding. I batch converted\u00a0the files (via Rx) into a more\u00a0Octatrack\/MPC friendly format & mangled away. Samples -\u00a0Ligo sounds.zip Example Octatrack sequence via Varis -\u00a0Octa-NUGENI2_01-01.wav One shots via - Octatrack\u2026","rel":"","context":"In &quot;Daily Noize&quot;","block_context":{"text":"Daily Noize","link":"https:\/\/ericbeam.com\/?cat=4"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2016\/02\/WP_20160215_14_44_49_Pro-e1455578137576-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2016\/02\/WP_20160215_14_44_49_Pro-e1455578137576-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2016\/02\/WP_20160215_14_44_49_Pro-e1455578137576-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2016\/02\/WP_20160215_14_44_49_Pro-e1455578137576-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2016\/02\/WP_20160215_14_44_49_Pro-e1455578137576-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/ericbeam.com\/wp-content\/uploads\/2016\/02\/WP_20160215_14_44_49_Pro-e1455578137576-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":24445,"url":"https:\/\/ericbeam.com\/?p=24445","url_meta":{"origin":24448,"position":5},"title":"Heart Contact.","author":"Eric","date":"June 29, 2011","format":false,"excerpt":"So my girl asked me if I had a microphone that could pick up my heart beat. A simple DIY contact mic was the 1st thing that popped into my head. I asked her \"why is that?\". \"So I can listen to you when your dead.\" Thats my morbid girl.\u2026","rel":"","context":"In &quot;Daily Noize&quot;","block_context":{"text":"Daily Noize","link":"https:\/\/ericbeam.com\/?cat=4"},"img":{"alt_text":"IMG_20110629_081230","src":"https:\/\/i0.wp.com\/farm7.static.flickr.com\/6049\/5886266162_36a9b3c8f9_m.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/ericbeam.com\/index.php?rest_route=\/wp\/v2\/posts\/24448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ericbeam.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ericbeam.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ericbeam.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ericbeam.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=24448"}],"version-history":[{"count":0,"href":"https:\/\/ericbeam.com\/index.php?rest_route=\/wp\/v2\/posts\/24448\/revisions"}],"wp:attachment":[{"href":"https:\/\/ericbeam.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=24448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ericbeam.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ericbeam.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}