{"id":118,"date":"2018-05-29T23:24:29","date_gmt":"2018-05-29T11:24:29","guid":{"rendered":"https:\/\/atrad-audio.co.nz\/?p=118"},"modified":"2025-04-22T14:50:25","modified_gmt":"2025-04-22T02:50:25","slug":"standalone-tone-control","status":"publish","type":"page","link":"https:\/\/atrad-audio.co.nz\/index.php\/standalone-tone-control\/","title":{"rendered":"Standalone Tone Control"},"content":{"rendered":"\n

This page is the only reason anyone comes to this site, so I’ve gotten rid of all the uninteresting stuff that took me ages to prepare, since this is the only part you came to see:<\/p>\n\n\n\n

This is a schematic for a 2-triode Baxandall tone control. Resistor and capacitor values can be selected according to the desired rollover points and boost\/cut levels.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
It can drive a load of 50K impedance.<\/div>\n\n\n\n
 <\/div>\n\n\n\n
The predicted bode plot from LTSpice looks like this<\/div>\n\n\n\n
 <\/div>\n\n\n\n
\"\"<\/a>
LTSpice prediction of circuit response<\/figcaption><\/figure>\n\n\n\n
 <\/div>\n\n\n\n

Actual measured responses from built unit<\/p>\n\n\n\n

\"\"
Tone controls Flat<\/figcaption><\/figure>\n\n\n\n
 <\/div>\n\n\n\n
\"\"
Bass Treble full lift<\/figcaption><\/figure>\n\n\n\n
\"\"
Bass Treble full cut<\/figcaption><\/figure>\n\n\n\n

I am not selling circuit boards for this unit, it is an integral part of my preamplifier and integrated amplifier which you can find on the products page.<\/p>\n\n\n\n

I was planning to build this as a standalone product, but it is unlikely I can build it for a price people will be happy to pay, so instead I will recommend if you want a tube based linelevel tone control you consider this unit<\/a> from Aliexpress instead.<\/p>\n","protected":false},"excerpt":{"rendered":"

This page is the only reason anyone comes to this site, so I’ve gotten rid of all the uninteresting stuff that took me ages to prepare, since this is the only part you came to see: This is a schematic for a 2-triode Baxandall tone control. Resistor and capacitor values can be selected according to … Continue reading Standalone Tone Control<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-118","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/atrad-audio.co.nz\/index.php\/wp-json\/wp\/v2\/pages\/118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/atrad-audio.co.nz\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/atrad-audio.co.nz\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/atrad-audio.co.nz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/atrad-audio.co.nz\/index.php\/wp-json\/wp\/v2\/comments?post=118"}],"version-history":[{"count":12,"href":"https:\/\/atrad-audio.co.nz\/index.php\/wp-json\/wp\/v2\/pages\/118\/revisions"}],"predecessor-version":[{"id":1348,"href":"https:\/\/atrad-audio.co.nz\/index.php\/wp-json\/wp\/v2\/pages\/118\/revisions\/1348"}],"wp:attachment":[{"href":"https:\/\/atrad-audio.co.nz\/index.php\/wp-json\/wp\/v2\/media?parent=118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}