{"id":11209,"date":"2026-09-14T10:20:13","date_gmt":"2026-09-14T08:20:13","guid":{"rendered":"https:\/\/owolff.com\/?p=11209"},"modified":"2026-09-14T11:13:19","modified_gmt":"2026-09-14T09:13:19","slug":"advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices","status":"publish","type":"post","link":"https:\/\/owolff.com\/ch\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/","title":{"rendered":"Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp2btpey-04414ed15ff54dd54bf04a939cf21335\">\n.avia-section.av-mp2btpey-04414ed15ff54dd54bf04a939cf21335{\nbackground-color:#f9f9f9;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-mp2btpey-04414ed15ff54dd54bf04a939cf21335 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-11209'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp2c4vor-9354367236621209f5dca489a0b2e74c\">\n#top .hr.hr-invisible.av-mp2c4vor-9354367236621209f5dca489a0b2e74c{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-mp2c4vor-9354367236621209f5dca489a0b2e74c hr-invisible  avia-builder-el-1  el_before_av_textblock  avia-builder-el-first '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp2byar1-2a7087496bed8941bf5589b7b1e34db9\">\n#top .av_textblock_section.av-mp2byar1-2a7087496bed8941bf5589b7b1e34db9 .avia_textblock{\nfont-size:12px;\ncolor:#adadad;\n}\n<\/style>\n<section  class='av_textblock_section av-mp2byar1-2a7087496bed8941bf5589b7b1e34db9 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>Resources \/ <a href=\"https:\/\/owolff.com\/acoustics\/white-papers\/\">White papers<\/a><\/p>\n<\/div><\/section>\n<div  class='flex_column av-v6pbww-4c63e5ba7d64352a506e083abd97dd89 av_four_fifth  avia-builder-el-3  el_after_av_textblock  avia-builder-el-last  first flex_column_div  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de\">\n#top .av-special-heading.av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de{\nmargin:-40px 0 0 0;\npadding-bottom:10px;\ncolor:#020202;\nfont-size:50px;\n}\nbody .av-special-heading.av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de .av-special-heading-tag{\nfont-size:50px;\npadding:0 0 15px 0;\n}\n.av-special-heading.av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de .special-heading-inner-border{\nborder-color:#020202;\n}\n.av-special-heading.av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de .av-subheading{\nfont-size:20px;\ncolor:#939393;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-mp2c22xt-6f1757ef3cc95f7797f3adfad981e4de av-special-heading-h3 custom-color-heading blockquote modern-quote  avia-builder-el-4  avia-builder-el-no-sibling  av-inherit-size'><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Engineering <span style=\"color: #bf4542; font-weight: bold;\">news<\/span>, white papers and application insights.<\/h3><div class='av_custom_color av-subheading av-subheading_below'><p>Stay up to date with new products, white papers, and developments from Ole Wolff.<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id='av_section_2'  class='avia-section av-mp15sb19-ad9e369462f4459e33c8f74674679a91 main_color avia-section-default avia-no-border-styling  avia-builder-el-5  el_after_av_section  el_before_av_sidebar  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-11209'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp0zplah-8c4d2ed8c7a27416a66c5025034ca3de\">\n@keyframes av_boxShadowEffect_av-mp0zplah-8c4d2ed8c7a27416a66c5025034ca3de-column {\n0%   { box-shadow:  0 0 0 0 #020202; opacity: 1; }\n100% { box-shadow:  0 0 3px 0 #020202; opacity: 1; }\n}\n#top .flex_column.av-mp0zplah-8c4d2ed8c7a27416a66c5025034ca3de{\nmargin-top:80px;\nmargin-bottom:0px;\n}\n.flex_column.av-mp0zplah-8c4d2ed8c7a27416a66c5025034ca3de{\ntransform:scale(1.1);\nz-index:5;\nbox-shadow: 0 0 3px 0 #020202;\nborder-width:1px;\nborder-color:#020202;\nborder-style:solid;\nborder-radius:2px 2px 2px 2px;\npadding:30px 30px 30px 30px;\nheight:auto;\nmin-height:600px;\nbackground:url(https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news_front3-scaled.jpg) 50% 50% no-repeat scroll ;\n}\n.responsive #top #wrap_all .flex_column.av-mp0zplah-8c4d2ed8c7a27416a66c5025034ca3de{\nmargin-top:80px;\nmargin-bottom:0px;\n}\n<\/style>\n<div  id=\"news-top-col\"  class='flex_column av-mp0zplah-8c4d2ed8c7a27416a66c5025034ca3de av_two_fifth  avia-builder-el-6  el_before_av_three_fifth  avia-builder-el-first  first no_margin flex_column_div shadow-not-animated avia-full-stretch  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp10jplo-84b8353147726e640d2a513feb6317fb\">\n#top .av_textblock_section.av-mp10jplo-84b8353147726e640d2a513feb6317fb .avia_textblock{\ncolor:#ffffff;\ntext-align:right;\n}\n<\/style>\n<section  class='av_textblock_section av-mp10jplo-84b8353147726e640d2a513feb6317fb '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p><strong>White paper<br \/>\n<\/strong>September 2026<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp10s8td-9395c416875071cd256d828fabb4114c\">\n.avia-image-container.av-mp10s8td-9395c416875071cd256d828fabb4114c img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-mp10s8td-9395c416875071cd256d828fabb4114c .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-mp10s8td-9395c416875071cd256d828fabb4114c av-styling- avia-align-left  avia-builder-el-8  el_after_av_textblock  avia-builder-el-last '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-255 avia-img-lazy-loading-not-255 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/09\/Logo_m_hvid_tekst-01.svg\" alt='' title='Logo_m_hvid_tekst-01'  height=\"300\" width=\"300\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp0zuts3-38c019bdafce80a612ba14eb9ec025ff\">\n#top .flex_column.av-mp0zuts3-38c019bdafce80a612ba14eb9ec025ff{\nmargin-top:80px;\nmargin-bottom:0px;\n}\n.flex_column.av-mp0zuts3-38c019bdafce80a612ba14eb9ec025ff{\nborder-width:1px;\nborder-color:#efefef;\nborder-style:solid;\nborder-radius:2px 2px 2px 2px;\npadding:30px 30px 30px 50px;\nbackground-color:#f9f9f9;\n}\n.responsive #top #wrap_all .flex_column.av-mp0zuts3-38c019bdafce80a612ba14eb9ec025ff{\nmargin-top:80px;\nmargin-bottom:0px;\n}\n<\/style>\n<div  class='flex_column av-mp0zuts3-38c019bdafce80a612ba14eb9ec025ff av_three_fifth  avia-builder-el-9  el_after_av_two_fifth  avia-builder-el-last  no_margin flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp15jdsb-60bf2ccf5081e231d87d26245e720c3a\">\n#top .av-post-metadata-container.av-mp15jdsb-60bf2ccf5081e231d87d26245e720c3a{\ncolor:#adadad;\nmargin:0 0 10px 0;\n}\n<\/style>\n<div  class='av-post-metadata-container av-mp15jdsb-60bf2ccf5081e231d87d26245e720c3a av-metadata-container-align-left  avia-builder-el-10  el_before_av_heading  avia-builder-el-first  av-metadata-container-1'><div class='av-post-metadata-container-inner'><span class=\"av-post-metadata-content av-post-metadata-meta-content\"><span class=\"av-post-metadata-content av-post-metadata-modified\"><span class=\"av-post-metadata-modified-date\" >14 9 \u6708, 2026<\/span><\/span><span class=\"av-post-metadata-content av-post-metadata-separator\">\/<\/span><span class=\"av-post-metadata-content av-post-metadata-category\"><span class=\"av-post-metadata-category-name\" >Acoustics news<\/span>, <span class=\"av-post-metadata-category-name\" >White papers<\/span><\/span><\/span><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2pfino-af05ae4bc0e19de98e436afeb4177be4\">\n#top .av-special-heading.av-2pfino-af05ae4bc0e19de98e436afeb4177be4{\nmargin:0 0 20px 0;\npadding-bottom:0;\ncolor:#101010;\n}\nbody .av-special-heading.av-2pfino-af05ae4bc0e19de98e436afeb4177be4 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-2pfino-af05ae4bc0e19de98e436afeb4177be4 .special-heading-inner-border{\nborder-color:#101010;\n}\n.av-special-heading.av-2pfino-af05ae4bc0e19de98e436afeb4177be4 .av-subheading{\nfont-size:21px;\n}\n<\/style>\n<div  class='av-special-heading av-2pfino-af05ae4bc0e19de98e436afeb4177be4 av-special-heading-h1 custom-color-heading blockquote modern-quote  avia-builder-el-11  el_after_av_post_metadata  el_before_av_textblock '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Advanced magnet system design technology for <span style=\"color: #bf4542; font-weight: bold;\">moving coil drivers and micro speakers<\/span> for portable devices<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lc0kj8mr-b16e81ed49398985eafed48bd6a23fff\">\n#top .av_textblock_section.av-lc0kj8mr-b16e81ed49398985eafed48bd6a23fff .avia_textblock{\ncolor:#101010;\n}\n<\/style>\n<section  class='av_textblock_section av-lc0kj8mr-b16e81ed49398985eafed48bd6a23fff '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p><strong>Advanced magnet system design for moving coil drivers &amp; micro speakers<\/strong><\/p>\n<p>The magnet system is the heart of every headphone driver and micro speaker, it&#8217;s what converts electrical current in the voice coil into the mechanical force that moves the diaphragm and creates sound. Get the design right, and the payoff shows up directly in battery life, power efficiency, and audio quality. Get it wrong, and no amount of downstream tuning will fully make up for it.<\/p>\n<p>In our latest white paper, we take a closer look at what goes into designing a high-performance magnet system for portable audio components.<\/p>\n<p>We cover why neodymium magnets have become the standard choice over ferrite, Alnico, and Samarium Cobalt, and what the trade-offs are between magnet grade and temperature stability. We explain the role soft iron yokes play in directing and concentrating the magnetic field through the air gap and when it makes sense to move to higher-saturation alloys like Vacoflux 50 despite the added cost.<\/p>\n<p>The paper also digs into the performance parameters that a magnet system design directly influences: how tightening the air gap tolerance increases magnetic field strength, why that improves the Qes factor and overall power efficiency, and how all of this ties back to something every product team cares about \u2013 operating time before the next charge.<\/p>\n<p>Finally, we walk through how we use Comsol simulation to optimize magnet height, diameter and grade, yoke thickness and diameter, and voice coil position, running through iterations automatically to land on the strongest and most linear Bl curve possible.<br \/>\nAs a real-world example, we share simulation results from our <strong>OWR-4009T-36NF<\/strong> headphone driver, including flux density mapping and Bl-versus-displacement data.<\/p>\n<p>If you&#8217;re working on earphones, headphones, or micro speakers and want to understand what really drives performance-to-size ratio in these components, this white paper is worth your time.<\/p>\n<p><strong>Download WP16: Advanced magnet system design technology for moving coil drivers &amp; micro speakers below.<\/strong><\/p>\n<hr \/>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-mp16ogig-b4f8617c320dbe2d2b63fe28babe66b1-wrap avia-button-left  avia-builder-el-13  el_after_av_textblock  avia-builder-el-last '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp16ogig-b4f8617c320dbe2d2b63fe28babe66b1\">\n#top #wrap_all .avia-button.av-mp16ogig-b4f8617c320dbe2d2b63fe28babe66b1{\nfont-size:15px;\ncolor:#bf4542;\nborder-style:none;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-mp16ogig-b4f8617c320dbe2d2b63fe28babe66b1:hover{\ncolor:#702423;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-mp16ogig-b4f8617c320dbe2d2b63fe28babe66b1 .avia-svg-icon svg:first-child{\nfill:#bf4542;\nstroke:#bf4542;\n}\n#top #wrap_all .avia-button.av-mp16ogig-b4f8617c320dbe2d2b63fe28babe66b1:hover .avia-svg-icon svg:first-child{\nfill:#702423;\nstroke:#702423;\n}\n<\/style>\n<a href='https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/WP16-magnet-system-design-technology_V2.pdf'  class='avia-button av-mp16ogig-b4f8617c320dbe2d2b63fe28babe66b1 av-link-btn avia-icon_select-no avia-size-small avia-position-left'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"READ THE WHITE PAPER \u2192\"><span class='avia_iconbox_title' >READ THE WHITE PAPER \u2192<\/span><\/a><\/div><\/p><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='after_section_2'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-11209'><div class='entry-content-wrapper clearfix'><div  class='avia-builder-widget-area clearfix  avia-builder-el-14  el_after_av_section  el_before_av_section  avia-builder-el-no-sibling '>      <section id=\"mailpoet_form-2\" class=\"widget clearfix widget_mailpoet_form\">\n  \n  \n  <div class=\"\n    mailpoet_form_popup_overlay\n      \"><\/div>\n  <div\n    id=\"mailpoet_form_1\"\n    class=\"\n      mailpoet_form\n      mailpoet_form_widget\n      mailpoet_form_position_\n      mailpoet_form_animation_\n    \"\n      >\n\n    <style type=\"text\/css\">\n     #mailpoet_form_1 form.mailpoet_form { margin-bottom: 0; }\n#mailpoet_form_1 p.mailpoet_form_paragraph.last { margin-bottom: 0px; }\n#mailpoet_form_1 h1.mailpoet-heading { margin: 0 0 10px; }\n#mailpoet_form_1 .mailpoet_column_with_background { padding: 10px; }\n#mailpoet_form_1 .mailpoet_form_column:not(:first-child) { margin-left: 20px; }\n#mailpoet_form_1 .mailpoet_paragraph { line-height: 20px; margin-bottom: 20px; }\n#mailpoet_form_1 .mailpoet_segment_label, #mailpoet_form_1 .mailpoet_text_label, #mailpoet_form_1 .mailpoet_textarea_label, #mailpoet_form_1 .mailpoet_select_label, #mailpoet_form_1 .mailpoet_radio_label, #mailpoet_form_1 .mailpoet_checkbox_label, #mailpoet_form_1 .mailpoet_list_label, #mailpoet_form_1 .mailpoet_date_label { display: block; font-weight: normal; }\n#mailpoet_form_1 .mailpoet_text, #mailpoet_form_1 .mailpoet_textarea, #mailpoet_form_1 .mailpoet_select, #mailpoet_form_1 .mailpoet_date_month, #mailpoet_form_1 .mailpoet_date_day, #mailpoet_form_1 .mailpoet_date_year, #mailpoet_form_1 .mailpoet_date { display: block; }\n#mailpoet_form_1 .mailpoet_text, #mailpoet_form_1 .mailpoet_textarea { width: 200px; }\n#mailpoet_form_1 .mailpoet_checkbox {  }\n#mailpoet_form_1 .mailpoet_submit {  }\n#mailpoet_form_1 .mailpoet_divider {  }\n#mailpoet_form_1 .mailpoet_message {  }\n#mailpoet_form_1 .mailpoet_form_loading { width: 30px; text-align: center; line-height: normal; }\n#mailpoet_form_1 .mailpoet_form_loading > span { width: 5px; height: 5px; background-color: #5b5b5b; }#mailpoet_form_1{border: 10px solid #f7f7f7;border-radius: 15px;background: #ffffff;color: #313131;text-align: left;}#mailpoet_form_1 form.mailpoet_form {padding: 10px;}#mailpoet_form_1{width: 100%;}#mailpoet_form_1 .mailpoet_message {margin: 0; padding: 0 20px;}\n        #mailpoet_form_1 .mailpoet_validate_success {color: #00d084}\n        #mailpoet_form_1 input.parsley-success {color: #00d084}\n        #mailpoet_form_1 select.parsley-success {color: #00d084}\n        #mailpoet_form_1 textarea.parsley-success {color: #00d084}\n      \n        #mailpoet_form_1 .mailpoet_validate_error {color: #cf2e2e}\n        #mailpoet_form_1 input.parsley-error {color: #cf2e2e}\n        #mailpoet_form_1 select.parsley-error {color: #cf2e2e}\n        #mailpoet_form_1 textarea.textarea.parsley-error {color: #cf2e2e}\n        #mailpoet_form_1 .parsley-errors-list {color: #cf2e2e}\n        #mailpoet_form_1 .parsley-required {color: #cf2e2e}\n        #mailpoet_form_1 .parsley-custom-error-message {color: #cf2e2e}\n      #mailpoet_form_1 .mailpoet_paragraph.last {margin-bottom: 0} @media (max-width: 500px) {#mailpoet_form_1 {background: #ffffff;}} @media (min-width: 500px) {#mailpoet_form_1 .last .mailpoet_paragraph:last-child {margin-bottom: 0}}  @media (max-width: 500px) {#mailpoet_form_1 .mailpoet_form_column:last-child .mailpoet_paragraph:last-child {margin-bottom: 0}} \n    <\/style>\n\n    <form\n      target=\"_self\"\n      method=\"post\"\n      action=\"https:\/\/owolff.com\/wp-admin\/admin-post.php?action=mailpoet_subscription_form\"\n      class=\"mailpoet_form mailpoet_form_form mailpoet_form_widget\"\n      novalidate\n      data-delay=\"\"\n      data-exit-intent-enabled=\"\"\n      data-trigger-mode=\"\"\n      data-click-trigger-selector=\"\"\n      data-font-family=\"\"\n      data-cookie-expiration-time=\"\"\n    >\n      <input type=\"hidden\" name=\"data[form_id]\" value=\"1\" \/>\n      <input type=\"hidden\" name=\"token\" value=\"faa6e14dd8\" \/>\n      <input type=\"hidden\" name=\"api_version\" value=\"v1\" \/>\n      <input type=\"hidden\" name=\"endpoint\" value=\"subscribers\" \/>\n      <input type=\"hidden\" name=\"mailpoet_method\" value=\"subscribe\" \/>\n\n      <label class=\"mailpoet_hp_email_label\" style=\"display: none !important;\">\u8bf7\u5c06\u6b64\u5b57\u6bb5\u7559\u7a7a<input type=\"email\" name=\"data[email]\"\/><\/label><h1 class=\"mailpoet-heading  mailpoet-has-font-size\" style=\"text-align: center; color: #313131; font-size: 24px; line-height: 1.2\"><span style=\"font-family: Arial\" data-font=\"Arial\" class=\"mailpoet-has-font\">Don\u2019t miss the next one!<\/span><\/h1>\n<div class='mailpoet_form_columns_container'><div class=\"mailpoet_form_columns mailpoet_paragraph mailpoet_stack_on_mobile\"><div class=\"mailpoet_form_column\" style=\"flex-basis:33.34%;\"><div class='mailpoet_form_columns_container'><div class=\"mailpoet_form_columns mailpoet_paragraph mailpoet_stack_on_mobile\"><div class=\"mailpoet_form_column\" style=\"flex-basis:100%;\"><\/div>\n<\/div><\/div>\n<\/div>\n<div class=\"mailpoet_form_column\" style=\"flex-basis:100%;\"><p class=\"mailpoet_form_paragraph  mailpoet-has-font-size\" style=\"text-align: left; font-size: 16px\">Subscribe for white papers and product news from Ole Wolff's engineering team.<\/p>\n<\/div>\n<div class=\"mailpoet_form_column\" style=\"flex-basis:33.33%;\"><\/div>\n<\/div><\/div>\n<div class='mailpoet_form_columns_container'><div class=\"mailpoet_form_columns mailpoet_paragraph mailpoet_stack_on_mobile\"><div class=\"mailpoet_form_column\" style=\"flex-basis:10%;\"><\/div>\n<div class=\"mailpoet_form_column\" style=\"flex-basis:40%;\"><div class=\"mailpoet_paragraph \"><style>input[name=\"data[form_field_MzhjYzJmZTM2MTJlX2VtYWls]\"]::placeholder{color:#abb8c3;opacity: 1;}<\/style><input type=\"email\" autocomplete=\"email\" class=\"mailpoet_text\" id=\"form_email_1\" name=\"data[form_field_MzhjYzJmZTM2MTJlX2VtYWls]\" title=\"Email Address\" value=\"\" style=\"width:100%;box-sizing:border-box;background-color:#eeeeee;border-style:solid;border-radius:8px !important;border-width:0px;border-color:#313131;padding:16px;margin: 0 auto 0 0;font-family:&#039;Montserrat&#039;;font-size:20px;line-height:1.5;height:auto;color:#abb8c3;\" data-automation-id=\"form_email\"  placeholder=\"Email Address *\" aria-label=\"Email Address *\" data-parsley-errors-container=\".mailpoet_error_7c3g2\" data-parsley-required=\"true\" required aria-required=\"true\" data-parsley-minlength=\"6\" data-parsley-maxlength=\"150\" data-parsley-type-message=\"This value should be a valid email.\" data-parsley-required-message=\"\u8fd9\u4e2a\u5b57\u6bb5\u5fc5\u586b\u3002\"\/><span class=\"mailpoet_error_7c3g2\"><\/span><\/div>\n<\/div>\n<div class=\"mailpoet_form_column\" style=\"flex-basis:40%;\"><div class=\"mailpoet_paragraph \"><input type=\"submit\" class=\"mailpoet_submit\" value=\"Subscribe\" data-automation-id=\"subscribe-submit-button\" data-font-family='Arial' style=\"width:100%;box-sizing:border-box;background-color:#bf4542;border-style:solid;border-radius:8px !important;border-width:0px;padding:16px;margin: 0 auto 0 0;font-family:&#039;Arial&#039;;font-size:20px;line-height:1.5;height:auto;color:#ffffff;border-color:transparent;font-weight:bold;\" \/><span class=\"mailpoet_form_loading\"><span class=\"mailpoet_bounce1\"><\/span><span class=\"mailpoet_bounce2\"><\/span><span class=\"mailpoet_bounce3\"><\/span><\/span><\/div>\n<\/div>\n<div class=\"mailpoet_form_column\" style=\"flex-basis:10%;\"><\/div>\n<\/div><\/div>\n<p class=\"mailpoet_form_paragraph  mailpoet-has-font-size\" style=\"text-align: center; font-size: 13px; line-height: 1.5\"><em><span style=\"font-family: Arial\" data-font=\"Arial\" class=\"mailpoet-has-font\">We don\u2019t spam! Read more in our <a href=\"https:\/\/owolff.com\/privacy-policy\/\" target=\"_blank\">privacy policy<\/a><\/span><\/em><\/p>\n\n      <div class=\"mailpoet_message\">\n        <p class=\"mailpoet_validate_success\"\n                style=\"display:none;\"\n                >Please check your inbox or spam folder to confirm your subscription.\n        <\/p>\n        <p class=\"mailpoet_validate_error\"\n                style=\"display:none;\"\n                >        <\/p>\n      <\/div>\n    <\/form>\n\n      <\/div>\n\n      <span class=\"seperator extralight-border\"><\/span><\/section>\n  <\/div><\/p>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_3'  class='avia-section av-puc6cw-606237a7d62273daa85b4311c5080eca main_color avia-section-default avia-no-border-styling  avia-builder-el-15  el_after_av_sidebar  avia-builder-el-last  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-11209'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp17u46d-884a40246c4c28fee13816bf58ec301b\">\n#top .av-special-heading.av-mp17u46d-884a40246c4c28fee13816bf58ec301b{\nmargin:0 0 -30px 0;\ncolor:#adadad;\n}\nbody .av-special-heading.av-mp17u46d-884a40246c4c28fee13816bf58ec301b .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-mp17u46d-884a40246c4c28fee13816bf58ec301b .special-heading-inner-border{\nborder-color:#adadad;\n}\n.av-special-heading.av-mp17u46d-884a40246c4c28fee13816bf58ec301b .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-mp17u46d-884a40246c4c28fee13816bf58ec301b av-special-heading-h3 custom-color-heading  avia-builder-el-16  el_before_av_three_fourth  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Latest news<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<div class='flex_column_table av-mp1890si-54bf4ca60a453144e0d1a5114bcf66a1 sc-av_three_fourth av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp1890si-54bf4ca60a453144e0d1a5114bcf66a1\">\n.flex_column.av-mp1890si-54bf4ca60a453144e0d1a5114bcf66a1{\nwidth:73.875%;\nmargin-left:0;\n}\n#top .flex_column_table.av-equal-height-column-flextable.av-mp1890si-54bf4ca60a453144e0d1a5114bcf66a1 .av-flex-placeholder{\nwidth:4.5%;\n}\n<\/style>\n<div  class='flex_column av-mp1890si-54bf4ca60a453144e0d1a5114bcf66a1 av_three_fourth  avia-builder-el-17  el_after_av_heading  el_before_av_one_fourth  first flex_column_table_cell av-equal-height-column av-align-top  '     ><div  data-slideshow-options=\"{&quot;animation&quot;:&quot;fade&quot;,&quot;autoplay&quot;:false,&quot;loop_autoplay&quot;:&quot;once&quot;,&quot;interval&quot;:&quot;5&quot;,&quot;loop_manual&quot;:&quot;manual-endless&quot;,&quot;autoplay_stopper&quot;:false,&quot;noNavigation&quot;:false,&quot;show_slide_delay&quot;:90}\" class='avia-content-slider avia-content-slider-active avia-content-slider1 avia-content-slider-odd  avia-builder-el-18  avia-builder-el-no-sibling  av-slideshow-ui av-control-default   av-no-slider-navigation av-slideshow-manual av-loop-once av-loop-manual-endless '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/Blog\" ><div class=\"avia-content-slider-inner\"><div class=\"slide-entry-wrap\"><article class='slide-entry flex_column  post-entry post-entry-11209 slide-entry-overview slide-loop-1 slide-parity-odd  av_one_third first real-thumbnail posttype-post post-format-standard'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><a href='https:\/\/owolff.com\/ch\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/' data-rel='slide-1' class='slide-image' title='Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices'><img decoding=\"async\" fetchpriority=\"high\" width=\"2560\" height=\"2560\" src=\"https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg\" class=\"wp-image-11213 avia-img-lazy-loading-not-11213 attachment-no scaling size-no scaling wp-post-image\" alt=\"\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg 2560w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-300x300.jpg 300w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-1030x1030.jpg 1030w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-80x80.jpg 80w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-768x768.jpg 768w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-1536x1536.jpg 1536w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-2048x2048.jpg 2048w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-12x12.jpg 12w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-36x36.jpg 36w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-180x180.jpg 180w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-1500x1500.jpg 1500w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-705x705.jpg 705w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-120x120.jpg 120w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-450x450.jpg 450w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-1320x1320.jpg 1320w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-24x24.jpg 24w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/a><div class=\"slide-content\"><header class=\"entry-content-header\" aria-label=\"Slide: Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices\"><\/header><\/div><footer class=\"entry-footer\"><\/footer><span class='hidden'>\n\t\t\t\t<span class='av-structured-data'  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" >\n\t\t\t\t\t\t<span itemprop='url'>https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg<\/span>\n\t\t\t\t\t\t<span itemprop='height'>2560<\/span>\n\t\t\t\t\t\t<span itemprop='width'>2560<\/span>\n\t\t\t\t<\/span>\n\t\t\t\t<span class='av-structured-data'  itemprop=\"publisher\" itemtype=\"https:\/\/schema.org\/Organization\" itemscope=\"itemscope\" >\n\t\t\t\t\t\t<span itemprop='name'>Thomas<\/span>\n\t\t\t\t\t\t<span itemprop='logo' itemscope itemtype='https:\/\/schema.org\/ImageObject'>\n\t\t\t\t\t\t\t<span itemprop='url'>https:\/\/owolff.com.linux20.curanetserver.dk\/wp-content\/uploads\/2022\/12\/Logo_m_hvid_tekst_large-2-300x61.png<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t<\/span><span class='av-structured-data'  itemprop=\"author\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/Person\" ><span itemprop='name'>Thomas<\/span><\/span><span class='av-structured-data'  itemprop=\"datePublished\" datetime=\"2026-09-14T10:20:13+02:00\" >2026-09-14 10:20:13<\/span><span class='av-structured-data'  itemprop=\"dateModified\" itemtype=\"https:\/\/schema.org\/dateModified\" >2026-09-14 11:13:19<\/span><span class='av-structured-data'  itemprop=\"mainEntityOfPage\" itemtype=\"https:\/\/schema.org\/mainEntityOfPage\" ><span itemprop='name'>Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices<\/span><\/span><\/span><\/article><article class='slide-entry flex_column  post-entry post-entry-10992 slide-entry-overview slide-loop-2 slide-parity-even  av_one_third  real-thumbnail posttype-post post-format-standard'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><a href='https:\/\/owolff.com\/ch\/white-papers\/the-challenge-of-inappropriate-hf-response-in-headphone-drivers\/' data-rel='slide-1' class='slide-image' title='The challenge of inappropriate HF response in Headphone drivers'><img decoding=\"async\" fetchpriority=\"high\" width=\"2560\" height=\"2560\" src=\"https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-scaled.jpg\" class=\"wp-image-10993 avia-img-lazy-loading-not-10993 attachment-no scaling size-no scaling wp-post-image\" alt=\"\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-scaled.jpg 2560w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-300x300.jpg 300w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-1030x1030.jpg 1030w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-80x80.jpg 80w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-768x768.jpg 768w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-1536x1536.jpg 1536w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-2048x2048.jpg 2048w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-12x12.jpg 12w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-36x36.jpg 36w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-180x180.jpg 180w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-1500x1500.jpg 1500w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-705x705.jpg 705w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-120x120.jpg 120w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-450x450.jpg 450w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-24x24.jpg 24w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-48x48.jpg 48w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-600x600.jpg 600w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-100x100.jpg 100w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/a><div class=\"slide-content\"><header class=\"entry-content-header\" aria-label=\"Slide: The challenge of inappropriate HF response in Headphone drivers\"><\/header><\/div><footer class=\"entry-footer\"><\/footer><span class='hidden'>\n\t\t\t\t<span class='av-structured-data'  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" >\n\t\t\t\t\t\t<span itemprop='url'>https:\/\/owolff.com\/wp-content\/uploads\/2026\/05\/news-scaled.jpg<\/span>\n\t\t\t\t\t\t<span itemprop='height'>2560<\/span>\n\t\t\t\t\t\t<span itemprop='width'>2560<\/span>\n\t\t\t\t<\/span>\n\t\t\t\t<span class='av-structured-data'  itemprop=\"publisher\" itemtype=\"https:\/\/schema.org\/Organization\" itemscope=\"itemscope\" >\n\t\t\t\t\t\t<span itemprop='name'>Thomas<\/span>\n\t\t\t\t\t\t<span itemprop='logo' itemscope itemtype='https:\/\/schema.org\/ImageObject'>\n\t\t\t\t\t\t\t<span itemprop='url'>https:\/\/owolff.com.linux20.curanetserver.dk\/wp-content\/uploads\/2022\/12\/Logo_m_hvid_tekst_large-2-300x61.png<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t<\/span><span class='av-structured-data'  itemprop=\"author\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/Person\" ><span itemprop='name'>Thomas<\/span><\/span><span class='av-structured-data'  itemprop=\"datePublished\" datetime=\"2026-09-14T10:20:13+02:00\" >2026-05-12 11:33:46<\/span><span class='av-structured-data'  itemprop=\"dateModified\" itemtype=\"https:\/\/schema.org\/dateModified\" >2026-05-12 11:36:21<\/span><span class='av-structured-data'  itemprop=\"mainEntityOfPage\" itemtype=\"https:\/\/schema.org\/mainEntityOfPage\" ><span itemprop='name'>The challenge of inappropriate HF response in Headphone drivers<\/span><\/span><\/span><\/article><article class='slide-entry flex_column  post-entry post-entry-10709 slide-entry-overview slide-loop-3 slide-parity-odd  post-entry-last  av_one_third  real-thumbnail posttype-post post-format-standard'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><a href='https:\/\/owolff.com\/ch\/white-papers\/design-tws-earphones-using-comsol\/' data-rel='slide-1' class='slide-image' title='Acoustic design of True Wireless earphones (TWS) using COMSOL Multiphysics'><img decoding=\"async\" fetchpriority=\"high\" width=\"2560\" height=\"2560\" src=\"https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-scaled.jpg\" class=\"wp-image-10764 avia-img-lazy-loading-not-10764 attachment-no scaling size-no scaling wp-post-image\" alt=\"\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-scaled.jpg 2560w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-300x300.jpg 300w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-1030x1030.jpg 1030w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-80x80.jpg 80w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-768x768.jpg 768w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-1536x1536.jpg 1536w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-2048x2048.jpg 2048w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-12x12.jpg 12w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-36x36.jpg 36w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-180x180.jpg 180w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-1500x1500.jpg 1500w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-705x705.jpg 705w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-120x120.jpg 120w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-450x450.jpg 450w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-24x24.jpg 24w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-48x48.jpg 48w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-600x600.jpg 600w, https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-100x100.jpg 100w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/a><div class=\"slide-content\"><header class=\"entry-content-header\" aria-label=\"Slide: Acoustic design of True Wireless earphones (TWS) using COMSOL Multiphysics\"><\/header><\/div><footer class=\"entry-footer\"><\/footer><span class='hidden'>\n\t\t\t\t<span class='av-structured-data'  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" >\n\t\t\t\t\t\t<span itemprop='url'>https:\/\/owolff.com\/wp-content\/uploads\/2026\/04\/linkedin-1-scaled.jpg<\/span>\n\t\t\t\t\t\t<span itemprop='height'>2560<\/span>\n\t\t\t\t\t\t<span itemprop='width'>2560<\/span>\n\t\t\t\t<\/span>\n\t\t\t\t<span class='av-structured-data'  itemprop=\"publisher\" itemtype=\"https:\/\/schema.org\/Organization\" itemscope=\"itemscope\" >\n\t\t\t\t\t\t<span itemprop='name'>Thomas<\/span>\n\t\t\t\t\t\t<span itemprop='logo' itemscope itemtype='https:\/\/schema.org\/ImageObject'>\n\t\t\t\t\t\t\t<span itemprop='url'>https:\/\/owolff.com.linux20.curanetserver.dk\/wp-content\/uploads\/2022\/12\/Logo_m_hvid_tekst_large-2-300x61.png<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t\t\t<\/span><span class='av-structured-data'  itemprop=\"author\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/Person\" ><span itemprop='name'>Thomas<\/span><\/span><span class='av-structured-data'  itemprop=\"datePublished\" datetime=\"2026-09-14T10:20:13+02:00\" >2026-04-09 11:37:09<\/span><span class='av-structured-data'  itemprop=\"dateModified\" itemtype=\"https:\/\/schema.org\/dateModified\" >2026-04-13 12:46:24<\/span><span class='av-structured-data'  itemprop=\"mainEntityOfPage\" itemtype=\"https:\/\/schema.org\/mainEntityOfPage\" ><span itemprop='name'>Acoustic design of True Wireless earphones (TWS) using COMSOL Multiphysics<\/span><\/span><\/span><\/article><\/div><\/div><\/div><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp185vdv-852089f5b79c5a0377c5960ad6c91f46\">\n.flex_column.av-mp185vdv-852089f5b79c5a0377c5960ad6c91f46{\nwidth:21.625%;\nmargin-left:0;\nborder-width:1px;\nborder-color:#efefef;\nborder-style:solid;\nborder-radius:2px 2px 2px 2px;\npadding:90px 30px 0 30px;\nbackground-color:#f9f9f9;\n}\n#top .flex_column_table.av-equal-height-column-flextable.av-mp185vdv-852089f5b79c5a0377c5960ad6c91f46 .av-flex-placeholder{\nwidth:4.5%;\n}\n<\/style>\n<div  class='flex_column av-mp185vdv-852089f5b79c5a0377c5960ad6c91f46 av_one_fourth  avia-builder-el-19  el_after_av_three_fourth  avia-builder-el-last  flex_column_table_cell av-equal-height-column av-align-top avia-link-column av-column-link avia-link-column-hover  '    data-link-column-url=\"https:\/\/owolff.com\/ch\/acoustics\/acoustics-news\/\"   ><a class=\"av-screen-reader-only\" href=https:\/\/owolff.com\/ch\/acoustics\/acoustics-news\/ >Link to: Acoustics news<\/a><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mp18damp-a7a29249fe7eb9742136e9d42387acb5\">\n#top .av_textblock_section.av-mp18damp-a7a29249fe7eb9742136e9d42387acb5 .avia_textblock{\nfont-size:25px;\ncolor:#bf4542;\ntext-align:center;\n}\n<\/style>\n<section  class='av_textblock_section av-mp18damp-a7a29249fe7eb9742136e9d42387acb5 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p style=\"text-align: center;\"><strong>ALL NEWS <\/strong><strong>\u2192<\/strong><\/p>\n<\/div><\/section><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='after_section_3'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-11209'><div class='entry-content-wrapper clearfix'>\n","protected":false},"excerpt":{"rendered":"<p>High-frequency response above 8 kHz is critical to sound clarity and stereo imaging in headphones, yet most drivers struggle to reproduce it cleanly. Our latest white paper examines why peaks and valleys appear in this frequency range and what it takes to eliminate them.<\/p>","protected":false},"author":5,"featured_media":11213,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[18,17],"tags":[],"class_list":["post-11209","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-acoustics-news","category-white-papers"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices - Ole Wolff Electronics<\/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:\/\/owolff.com\/ch\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices - Ole Wolff Electronics\" \/>\n<meta property=\"og:description\" content=\"High-frequency response above 8 kHz is critical to sound clarity and stereo imaging in headphones, yet most drivers struggle to reproduce it cleanly. Our latest white paper examines why peaks and valleys appear in this frequency range and what it takes to eliminate them.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/owolff.com\/ch\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/\" \/>\n<meta property=\"og:site_name\" content=\"Ole Wolff Electronics\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-14T08:20:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-14T09:13:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"2560\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Thomas\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"Thomas\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/\"},\"author\":{\"name\":\"Thomas\",\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#\\\/schema\\\/person\\\/f6fc7b71878eca77f71ed4ea96c3aebb\"},\"headline\":\"Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices\",\"datePublished\":\"2026-09-14T08:20:13+00:00\",\"dateModified\":\"2026-09-14T09:13:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/\"},\"wordCount\":4442,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/owolff.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/news-1-scaled.jpg\",\"articleSection\":[\"Acoustics news\",\"White papers\"],\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/\",\"url\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/\",\"name\":\"Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices - Ole Wolff Electronics\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/owolff.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/news-1-scaled.jpg\",\"datePublished\":\"2026-09-14T08:20:13+00:00\",\"dateModified\":\"2026-09-14T09:13:19+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/#primaryimage\",\"url\":\"https:\\\/\\\/owolff.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/news-1-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/owolff.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/news-1-scaled.jpg\",\"width\":2560,\"height\":2560},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/owolff.com\\\/white-papers\\\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/owolff.com\\\/home\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"White paper\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/owolff.com\\\/en\\\/\",\"name\":\"Ole Wolff Electronics\",\"description\":\"Acoustics and magnetics\",\"publisher\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/owolff.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#organization\",\"name\":\"Ole Wolff Elektronik\",\"url\":\"https:\\\/\\\/owolff.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/owolff.com.linux20.curanetserver.dk\\\/wp-content\\\/uploads\\\/2023\\\/02\\\/Logo_m_sort_tekst.png\",\"contentUrl\":\"https:\\\/\\\/owolff.com.linux20.curanetserver.dk\\\/wp-content\\\/uploads\\\/2023\\\/02\\\/Logo_m_sort_tekst.png\",\"width\":1181,\"height\":242,\"caption\":\"Ole Wolff Elektronik\"},\"image\":{\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/69900932\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/showcase\\\/78454741\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/owolff.com\\\/en\\\/#\\\/schema\\\/person\\\/f6fc7b71878eca77f71ed4ea96c3aebb\",\"name\":\"Thomas\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/60406b6a386563aa9ec7884e77fc0f1efe7555a70001bfae78e2c71986c27aab?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/60406b6a386563aa9ec7884e77fc0f1efe7555a70001bfae78e2c71986c27aab?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/60406b6a386563aa9ec7884e77fc0f1efe7555a70001bfae78e2c71986c27aab?s=96&d=mm&r=g\",\"caption\":\"Thomas\"},\"url\":\"https:\\\/\\\/owolff.com\\\/ch\\\/author\\\/thomas\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices - Ole Wolff Electronics","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/owolff.com\/ch\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/","og_locale":"zh_CN","og_type":"article","og_title":"Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices - Ole Wolff Electronics","og_description":"High-frequency response above 8 kHz is critical to sound clarity and stereo imaging in headphones, yet most drivers struggle to reproduce it cleanly. Our latest white paper examines why peaks and valleys appear in this frequency range and what it takes to eliminate them.","og_url":"https:\/\/owolff.com\/ch\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/","og_site_name":"Ole Wolff Electronics","article_published_time":"2026-09-14T08:20:13+00:00","article_modified_time":"2026-09-14T09:13:19+00:00","og_image":[{"width":2560,"height":2560,"url":"https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg","type":"image\/jpeg"}],"author":"Thomas","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"Thomas","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"3 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/#article","isPartOf":{"@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/"},"author":{"name":"Thomas","@id":"https:\/\/owolff.com\/en\/#\/schema\/person\/f6fc7b71878eca77f71ed4ea96c3aebb"},"headline":"Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices","datePublished":"2026-09-14T08:20:13+00:00","dateModified":"2026-09-14T09:13:19+00:00","mainEntityOfPage":{"@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/"},"wordCount":4442,"commentCount":0,"publisher":{"@id":"https:\/\/owolff.com\/en\/#organization"},"image":{"@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/#primaryimage"},"thumbnailUrl":"https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg","articleSection":["Acoustics news","White papers"],"inLanguage":"zh-Hans","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/","url":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/","name":"Advanced magnet system design technology for moving coil drivers and micro speakers for portable devices - Ole Wolff Electronics","isPartOf":{"@id":"https:\/\/owolff.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/#primaryimage"},"image":{"@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/#primaryimage"},"thumbnailUrl":"https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg","datePublished":"2026-09-14T08:20:13+00:00","dateModified":"2026-09-14T09:13:19+00:00","breadcrumb":{"@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/"]}]},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/#primaryimage","url":"https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg","contentUrl":"https:\/\/owolff.com\/wp-content\/uploads\/2026\/09\/news-1-scaled.jpg","width":2560,"height":2560},{"@type":"BreadcrumbList","@id":"https:\/\/owolff.com\/white-papers\/advanced-magnet-system-design-technology-for-moving-coil-drivers-and-micro-speakers-for-portable-devices\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/owolff.com\/home\/"},{"@type":"ListItem","position":2,"name":"White paper"}]},{"@type":"WebSite","@id":"https:\/\/owolff.com\/en\/#website","url":"https:\/\/owolff.com\/en\/","name":"Ole Wolff Electronics","description":"Acoustics and magnetics","publisher":{"@id":"https:\/\/owolff.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/owolff.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"zh-Hans"},{"@type":"Organization","@id":"https:\/\/owolff.com\/en\/#organization","name":"Ole Wolff Elektronik","url":"https:\/\/owolff.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/owolff.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/owolff.com.linux20.curanetserver.dk\/wp-content\/uploads\/2023\/02\/Logo_m_sort_tekst.png","contentUrl":"https:\/\/owolff.com.linux20.curanetserver.dk\/wp-content\/uploads\/2023\/02\/Logo_m_sort_tekst.png","width":1181,"height":242,"caption":"Ole Wolff Elektronik"},"image":{"@id":"https:\/\/owolff.com\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/69900932\/","https:\/\/www.linkedin.com\/showcase\/78454741\/"]},{"@type":"Person","@id":"https:\/\/owolff.com\/en\/#\/schema\/person\/f6fc7b71878eca77f71ed4ea96c3aebb","name":"Thomas","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/secure.gravatar.com\/avatar\/60406b6a386563aa9ec7884e77fc0f1efe7555a70001bfae78e2c71986c27aab?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/60406b6a386563aa9ec7884e77fc0f1efe7555a70001bfae78e2c71986c27aab?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/60406b6a386563aa9ec7884e77fc0f1efe7555a70001bfae78e2c71986c27aab?s=96&d=mm&r=g","caption":"Thomas"},"url":"https:\/\/owolff.com\/ch\/author\/thomas\/"}]}},"_links":{"self":[{"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/posts\/11209","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/comments?post=11209"}],"version-history":[{"count":7,"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/posts\/11209\/revisions"}],"predecessor-version":[{"id":11221,"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/posts\/11209\/revisions\/11221"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/media\/11213"}],"wp:attachment":[{"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/media?parent=11209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/categories?post=11209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/owolff.com\/ch\/wp-json\/wp\/v2\/tags?post=11209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}