{"id":5540,"date":"2023-02-03T08:40:12","date_gmt":"2023-02-03T13:40:12","guid":{"rendered":"https:\/\/pugix.com\/synth\/?p=5540"},"modified":"2023-02-03T08:40:14","modified_gmt":"2023-02-03T13:40:14","slug":"engine-waveform-mods","status":"publish","type":"post","link":"https:\/\/pugix.com\/synth\/engine-waveform-mods\/","title":{"rendered":"Engine Waveform Mods"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Rubin Sponar, the module designer, posted the following mods.<\/p>\n\n\n\n

R2, R3: change from 100k to 110k for offset of Triangle output, also improves sine roundness.
R85, R92: change from 100k to 47\/68k for better sine roundness. Adjust R81, R96 for amplitudes.
C20: replace with wire for a straight Pulse on VCO1.<\/p>\n\n\n\n

I did the changes for R2, R3, and C20 as described above and used 68K<\/strong> for R85 and R92, and 270K<\/strong> for R81 and R96.<\/p>\n\n\n\n

See also the original CubuSynth Engine<\/a> post.<\/p>\n\n\n\n

Comparison before and after of waveforms<\/h3>\n\n\n\n
\"\"
Old sine wave is pointy and 11.6V peak to peak<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

\"\"
New sine wave is rounded and 9.8V peak to peak<\/figcaption><\/figure>\n\n\n\n
\"\"
Old triangle wave<\/figcaption><\/figure>\n\n\n\n
\"\"
New triangle is shifted up a little<\/figcaption><\/figure>\n\n\n\n
\"\"
Old VCO1 pulse wave<\/figcaption><\/figure>\n\n\n\n
\"\"
New pulse wave is squared up<\/figcaption><\/figure>\n\n\n\n
\"\"
Old ramp wave<\/figcaption><\/figure>\n\n\n\n
\"\"
New ramp wave is unchanged<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Rubin Sponar, the module designer, posted the following mods. R2, R3: change from 100k to 110k for offset of Triangle output, also improves sine roundness.R85, R92: change from 100k to … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":5125,"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_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[161],"tags":[71,159,22],"class_list":["post-5540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eurorack","tag-diy","tag-eurorack","tag-vco"],"yoast_head":"\nEngine Waveform Mods - Richard Brewster's Electronic Sounds<\/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:\/\/pugix.com\/synth\/engine-waveform-mods\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Engine Waveform Mods - Richard Brewster's Electronic Sounds\" \/>\n<meta property=\"og:description\" content=\"Rubin Sponar, the module designer, posted the following mods. 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