<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On May 24, 2025, at 9:34 PM, Michael E Caloroso <<a href="mailto:mec.forumreader@gmail.com" class="">mec.forumreader@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Just sum the CVs from both pots to the CV summer opamp, configure the fine tune pot to lower gain.</div></div></blockquote><br class=""></div><div>It's the frequency pot for a Schmitt trigger/integrator LFO. I'd love to have some VCLFOs but that isn't in the cards. I'd love to build a modular version of this thing but I don't have the cash.</div><div><br class=""></div><div>A dual concentric pot would be convenient and cool but it's not a deal-breaker. I saw a 100kΩ / 20kΩ somewhere but it was out of stock, probably for a long time.</div><div><br class=""></div><div><br class=""></div><blockquote type="cite" class=""><div class="">On May 24, 2025, at 11:29 PM, Ben Bradley via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" class="">synth-diy@synth-diy.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">It's been quite a while since I've touched an SEM, but yeah, I think<br class="">those are two separate knobs on a reduction system that goes to the<br class="">shaft of one pot. These were used on the tuning shafts of old radios<br class="">from many decades ago. It's usually a ball bearing reduction and they<br class="">appear to be rather expensive.<br class=""></div></blockquote><div class=""><br class="webkit-block-placeholder"></div><div class="">I had a Two-Voice and I loved it. No stops on the fine pot, what a concept.</div><div class=""><br class=""></div><div class="">I hadn't found any for sale up until now so thanks for that. Are the knobs twice as much?</div><div class=""><br class=""></div><div class=""><br class="webkit-block-placeholder"></div><div class="">
<div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="text-align: start; text-indent: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="text-align: start; text-indent: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-align: start; text-indent: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Terry Bowman, KA4HJH<br class="">"The Mac Doctor"<br class=""><br class=""></div><div style="color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-align: start; text-indent: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><a href="https://www.astarcloseup.com" class="">https://www.astarcloseup.com</a></div><div style="color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-align: start; text-indent: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""></div><div style="text-align: start; text-indent: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">“...the book said something astonishing, a very big thought. The stars, it said, were suns but very far away. The Sun was a star but close up.”—Carl Sagan, "The Backbone Of Night",<span class="Apple-converted-space" style="color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"> </span><i style="color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Cosmos</i>, 1980<br class=""><br class=""></div></div></div></div></div>
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