Parts needed:<\/strong> notes:<\/strong> -Remove and Replace VR1<\/strong> 2a. Solder a resistor across the 2 pins shown in pic_1_replace_VR1. This picture shows a 2.2k ohm resistor in place of VR1. This results in a platter speed of ~20rpm, when the platter speed switch is set to 33rpm, and ~32rpm when set to 45rpm (varies between turntables). -Alternate VR1 values This is a Simplified Ultrapitch Modification for the Numark PT01 Parts needed: Resistor between 1k ohm and 2k ohm notes: -when the platter speed switch is set the 33rpm, the platter will spin at ~22rpm -when the platter speed is set to 45rpm, the platter will spin at 33rpm -this mod can only be […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[52],"tags":[25,48,51,60],"class_list":["post-904","post","type-post","status-publish","format-standard","hentry","category-mods","tag-flesh-o-n-e","tag-mod","tag-numark-pt01","tag-ultrapitch"],"_links":{"self":[{"href":"https:\/\/beatshelter.com\/index.php?rest_route=\/wp\/v2\/posts\/904","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/beatshelter.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/beatshelter.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/beatshelter.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/beatshelter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=904"}],"version-history":[{"count":9,"href":"https:\/\/beatshelter.com\/index.php?rest_route=\/wp\/v2\/posts\/904\/revisions"}],"predecessor-version":[{"id":1929,"href":"https:\/\/beatshelter.com\/index.php?rest_route=\/wp\/v2\/posts\/904\/revisions\/1929"}],"wp:attachment":[{"href":"https:\/\/beatshelter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=904"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beatshelter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=904"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beatshelter.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nResistor<\/a> between 1k ohm and 2k ohm<\/p>\n
\n-when the platter speed switch is set the 33rpm, the platter will spin at ~22rpm
\n-when the platter speed is set to 45rpm, the platter will spin at 33rpm
\n-this mod can only be done on newer (example 2014) PT01 turntables
\n-older models, such as circa 2006, have a different motor control circuit and require a different mod
\n-the new models have the orange potentiometer shown below, where the older models have a blue potentiometer
\n-download the \u201cRPM – the turntable speed accuracy checker\u201d iPhone app to test platter speed
\n-this mod came from a forum comment by Rasteri, which said \u201cReplace VR1 with a 2K resistor and that lowers the 33RPM speed to about 20RPM\u201d
\n-buy Dj Focus\u2019 ultrapitch mod<\/a> for full control, and to support the skratch community
\n-works with ultrapitch 7\u201d records, such as skiratcha breaks<\/a> from DJ A1<\/p>\n
\n1. Unsolder the potentiometer in VR1<\/p>\n
\n![\"pic_1_replace_VR\"](\"https:\/\/www.beatshelter.com\/a\/wp-content\/uploads\/2016\/04\/pic_1_replace_VR.jpg\")
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\n2b. It was found through test that a 960 ohm resistance across VR1 results in a clean 33rpm, when the platter speed switch was set to 45rpm. This resistance results in 22rpm, when the platter speed switch is at 33rpm. A 820 ohm and 150 ohm resistor were connected in series to achieve ~970 ohms. The resulting speed vs. resistance value depends a lot on the friction between the spindle and the platter. A value between 1k and 2k ohm should work great. see pic_2_replace_VR1_series
\n![\"pic_2_replace_VR1_series\"](\"https:\/\/www.beatshelter.com\/a\/wp-content\/uploads\/2016\/04\/pic_2_replace_VR1_series.jpg\")
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