{"id":29407,"date":"2021-05-05T23:16:19","date_gmt":"2021-05-05T21:16:19","guid":{"rendered":"http:\/\/velodyne-acoustics-wpml.local\/wp\/?page_id=29407"},"modified":"2025-03-05T15:39:33","modified_gmt":"2025-03-05T14:39:33","slug":"spl-ultra","status":"publish","type":"page","link":"https:\/\/velodyneacoustics.com\/en\/products\/spl-ultra\/","title":{"rendered":"SPL Ultra"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row type=&#8221;full_width_section&#8221;][vc_column width=&#8221;1\/1&#8243;]\n\t\t\t\t<p class=\"rs-p-wp-fix\"><\/p>\n\t\t\t\t<sr7-module data-alias=\"spl-ultra\" data-id=\"38\" id=\"SR7_38_1\" class=\"rs-ov-hidden\" data-version=\"6.7.56\">\n\t\t\t\t\t<sr7-adjuster><\/sr7-adjuster>\n\t\t\t\t\t<sr7-content>\n\t\t\t\t\t\t<sr7-slide id=\"SR7_38_1-6\" data-key=\"6\">\n\t\t\t\t\t\t\t<sr7-bg id=\"SR7_38_1-6-9\" class=\"sr7-layer\"><noscript><img decoding=\"async\" src=\"https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/04\/slider-background-spl-ultra.jpg\" alt=\"\" title=\"slider-background-spl-ultra\"><\/noscript><\/sr7-bg>\n\t\t\t\t\t\t\t<sr7-txt id=\"SR7_38_1-6-2\" class=\"sr7-layer\">Room calibration<br \/> for best bass<\/sr7-txt>\n\t\t\t\t\t\t\t<sr7-txt id=\"SR7_38_1-6-3\" class=\"sr7-layer\">Velodyne Acoustics SPL Ultra<\/sr7-txt>\n\t\t\t\t\t\t\t<sr7-txt id=\"SR7_38_1-6-8\" class=\"sr7-layer\">Learn more<\/sr7-txt>\n\t\t\t\t\t\t<\/sr7-slide>\n\t\t\t\t\t\t<sr7-slide id=\"SR7_38_1-107\" data-key=\"107\">\n\t\t\t\t\t\t<\/sr7-slide>\n\t\t\t\t\t<\/sr7-content>\n\t\t\t\t\t<image_lists style=\"display:none\">\n\t\t\t\t\t\t<img data-src=\"\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/04\/smoke.jpg\" data-libid=\"28826\" data-lib=\"medialibrary\" title=\"Photography of steam.\" width=\"0\" height=\"0\" data-dbsrc=\"Ly92ZWxvZHluZWFjb3VzdGljcy5jb20vd3AtY29udGVudC91cGxvYWRzLzIwMjEvMDQvc21va2UuanBn\"\/>\n\t\t\t\t\t\t<img data-src=\"\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/04\/spl-u-front.png\" data-libid=\"1080\" data-lib=\"medialibrary\" title=\"spl-u-front\" width=\"0\" height=\"0\" data-dbsrc=\"Ly92ZWxvZHluZWFjb3VzdGljcy5jb20vd3AtY29udGVudC91cGxvYWRzLzIwMjEvMDQvc3BsLXUtZnJvbnQucG5n\"\/>\n\t\t\t\t\t\t<img data-src=\"\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/04\/slider-background-spl-ultra.jpg\" data-libid=\"28825\" data-lib=\"medialibrary\" title=\"slider-background-spl-ultra\" width=\"0\" height=\"0\" data-dbsrc=\"Ly92ZWxvZHluZWFjb3VzdGljcy5jb20vd3AtY29udGVudC91cGxvYWRzLzIwMjEvMDQvc2xpZGVyLWJhY2tncm91bmQtc3BsLXVsdHJhLmpwZw==\"\/>\n\t\t\t\t\t<\/image_lists>\n\t\t\t\t<\/sr7-module>\n\t\t\t\t<script>\n\t\t\t\t\twindow.SR7 ??={};SR7.PMH ??={}; SR7.PMH[\"SR7_38_1\"] = {cn:100,state:false,fn: function() { if (window._tpt!==undefined && window._tpt.prepareModuleHeight !== undefined) {  _tpt.prepareModuleHeight({id:\"SR7_38_1\",el:[750,750,700,600,650],type:'standard',shdw:'0',gh:[750,750,600,500,400],gw:[1240,1240,1024,778,480],vpt:['-200px&#039;,&#039;-200px&#039;,&#039;-200px&#039;,&#039;-200px&#039;,&#039;-200px'],size:{fullWidth:true, fullHeight:false},mh:'0',onh:0,onw:0,bg:{color:'{\"orig\":\"transparent\",\"type\":\"solid\",\"string\":\"transparent\"}'},googleFont:\"ignore\"});   SR7.PMH[\"SR7_38_1\"].state=true;} else if(SR7.PMH[\"SR7_38_1\"].cn-->0)\tsetTimeout( SR7.PMH[\"SR7_38_1\"].fn,19);}};SR7.PMH[\"SR7_38_1\" ].fn();\n\t\t\t\t<\/script>\n[\/vc_column][\/vc_row][vc_row bg_color=&#8221;#222222&#8243; text_color=&#8221;light&#8221; top_padding=&#8221;10&#8243; bottom_padding=&#8221;10&#8243;][vc_column width=&#8221;1\/1&#8243;][vc_column_text]<a href=\"\/en\/products\/\" class=\"sliderbar\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/03\/icon-subwoofer-white.png\" width=\"25\" height=\"25\"> Our Subwoofers<\/a><a class=\"sliderbar\" href=\"\/en\/experience\/\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/03\/icon-dealerships-white.png\" width=\"30\" height=\"30\"> Find Distributors<\/a>[\/vc_column_text][\/vc_column][\/vc_row][vc_row text_align=&#8221;center&#8221; top_padding=&#8221;100&#8243; bottom_padding=&#8221;100&#8243;][vc_column width=&#8221;1\/1&#8243;][vc_column_text]<\/p>\n<h1>Velodyne Acoustics SPL Ultra<\/h1>\n<h2>The SPL Ultra series follows in the footsteps of the legendary DD series,<\/h2>\n<p>which revolutionized the subwoofer market with the world&#8217;s first automatic room calibration. With SPL Ultra, Velodyne Acoustics is further expressing the concept of the DD series.With the Velodyne Acoustics SPL Ultra series, precise and low-distortion bass becomes very easy to implement. In doing so, the respective amplifiers and the 8-, 10- and 12-inch drivers provide enormous power in the low frequencies.<\/p>\n<p>With DSPs (digital signal processors), the SPL Ultra Series is closely monitored to get the best possible performance in the room and minimize distortion. Thanks to the variable crossover and phase control, nothing stands in the way of fine-tuning the subwoofer &#8211; so the low end harmonizes perfectly with the mids and highs of the main speakers.<br \/>\n<p class=\"infolinks\"><a style=\"margin-right: 40px !important;\" href=\"#specs\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-219\" src=\"https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/03\/icon-list-black.png\" alt=\"\" width=\"25\" height=\"25\" \/> Specifications<\/a><a style=\"margin-right: 40px !important;\" href=\"#gallery\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-210\" src=\"https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/03\/icon-images-black.png\" alt=\"\" width=\"30\" height=\"30\" \/> Images<\/a><a href=\"\/en\/manuals-and-documents\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-210\" src=\"https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/03\/icon-downloads-black.png\" alt=\"\" width=\"30\" height=\"30\" \/> Downloads<\/a><\/p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row bg_color=&#8221;#f1f1f1&#8243; text_align=&#8221;center&#8221; top_padding=&#8221;100&#8243; bottom_padding=&#8221;100&#8243;][vc_column column_center=&#8221;true&#8221; width=&#8221;1\/1&#8243;][vc_column_text]<\/p>\n<h3>The display shows<\/h3>\n<p>the volume, crossover and phase settings at a glance. The SPL Ultra series also features an automatic equalizer that adjusts the frequency response of the subwoofer to the acoustics of the room and can be operated from the comfort of the sofa. After calibration, there&#8217;s a whole new low-frequency experience: clean, low-distortion bass, no matter how big the room or where the subwoofer is placed.[\/vc_column_text][\/vc_column][\/vc_row][vc_row bg_color=&#8221;#f1f1f1&#8243; bottom_padding=&#8221;100&#8243;][vc_column column_center=&#8221;true&#8221; width=&#8221;1\/2&#8243;][vc_column_text]<\/p>\n<h3>The Features<\/h3>\n<ul class=\"features\">\n<li>Powerful Class-D amplifiers and 3-inch voice coils provide the best low frequency reproduction for every listening situation.<\/li>\n<li>Automatic 7-band equalizer for room calibration including microphone ensures distortion-free bass from a wide range of room placements.<\/li>\n<li>A circuit for determining the driver excursion prevents overloading and clipping.<\/li>\n<li>The elegant, hand-polished lacquer surface in black or white is a real eye-catcher in the home theater.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243;]<div class=\"single_image wpb_content_element align-left    \" data-animation=\"none\" data-delay=\"0\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"507\" src=\"https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/04\/spl-u-perspektive.png\" class=\"attachment-thumbnail\" alt=\"\" title=\"spl-u-perspektive\" srcset=\"https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/04\/spl-u-perspektive.png 600w, https:\/\/velodyneacoustics.com\/wp-content\/uploads\/2021\/04\/spl-u-perspektive-300x254.png 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/div>[\/vc_column][\/vc_row][vc_row type=&#8221;full_width_section&#8221; class=&#8221;hidden&#8221;][vc_column width=&#8221;1\/1&#8243;][vc_column_text][scrollsequence id=&#8221;299&#8243;][\/vc_column_text][\/vc_column][\/vc_row][vc_row text_align=&#8221;center&#8221; top_padding=&#8221;100&#8243; bottom_padding=&#8221;100&#8243; row_id=&#8221;specs&#8221;][vc_column width=&#8221;1\/1&#8243;][vc_column_text]<\/p>\n<h3>The 8-, 10- and 12-inch subwoofers of the SPL Ultra series<\/h3>\n<p>are the impressive further development of the legendary DD subwoofers. From the housing with increased rigidity, to the digital amplifiers with optimized circuits, to the drivers and the operating concept, everything has been optimized.[\/vc_column_text][vc_tta_tabs active_section=&#8221;1&#8243; el_class=&#8221;product-tab&#8221;][vc_tta_section title=&#8221;SPL Ultra 12&#8243; tab_id=&#8221;spl-ultra-12&#8243;][vc_column_text el_class=&#8221;hidden&#8221;]<\/p>\n<table>\n<tbody>\n<tr>\n<th>Driver<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Amplifier Class D<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Frequency Response: (\u00b1 3 dB)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>THD<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Low Pass Crossover<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Phase<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Magnet Structure<\/th>\n<td colspan=\"2\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Voice Coil<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Cone<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Inputs<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Input Impedance<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Sensitivity-Line Level<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Outputs<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Dimensions (H\/W\/D) (includes feet and grille)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Shipping Weight (approx)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>[\/vc_column_text][\/vc_tta_section][vc_tta_section title=&#8221;SPL Ultra 10&#8243; tab_id=&#8221;spl-ultra-10&#8243;][vc_column_text el_class=&#8221;hidden&#8221;]<\/p>\n<table>\n<tbody>\n<tr>\n<th>Driver<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Amplifier Class D<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Frequency Response: (\u00b1 3 dB)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>THD<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Low Pass Crossover<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Phase<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Magnet Structure<\/th>\n<td colspan=\"2\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Voice Coil<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Cone<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Inputs<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Input Impedance<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Sensitivity-Line Level<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Outputs<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Dimensions (H\/W\/D) (includes feet and grille)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Shipping Weight (approx)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>[\/vc_column_text][\/vc_tta_section][vc_tta_section title=&#8221;SPL Ultra 8&#8243; tab_id=&#8221;spl-ultra-8&#8243;][vc_column_text el_class=&#8221;hidden&#8221;]<\/p>\n<table>\n<tbody>\n<tr>\n<th>Driver<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Amplifier Class D<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Frequency Response: (\u00b1 3 dB)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>THD<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Low Pass Crossover<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Phase<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Magnet Structure<\/th>\n<td colspan=\"2\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Voice Coil<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Cone<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Inputs<\/th>\n<td colspan=\"4\">N\/A<\/td>\n<\/tr>\n<tr>\n<th>Input Impedance<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Sensitivity-Line Level<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Outputs<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Dimensions (H\/W\/D) (includes feet and grille)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<th>Shipping Weight (approx)<\/th>\n<td>N\/A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>[\/vc_column_text][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][\/vc_row][vc_row bg_color=&#8221;#222222&#8243; 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bottom_padding=&#8221;150&#8243; class=&#8221;hidden&#8221; row_id=&#8221;awards&#8221;][vc_column width=&#8221;1\/1&#8243;]<div class=\"minti_carousel testimonial-slider grab-false dots\" data-columns=\"3\" data-tabletcolumns=\"3\" data-nav=\"true\" data-pagination=\"false\" data-autoplay=\"false\" data-animationtime=\"4000\"><div class=\"testimonial-wrap wpb_content_element\"><div class=\"testimonial\">Lorem ipsum<br \/>\n<a href=\"#\" target=\"_blank\" rel=\"noopener\">Learn more<\/a><\/div><div class=\"testimonial-author\"><span><\/span><\/div><\/div><div class=\"testimonial-wrap wpb_content_element\"><div class=\"testimonial\">Lorem ipsum<br \/>\n<a href=\"#\" target=\"_blank\" rel=\"noopener\">Learn more<\/a><\/div><div class=\"testimonial-author\"><span><\/span><\/div><\/div><div class=\"testimonial-wrap wpb_content_element\"><div class=\"testimonial\">Lorem ipsum<br \/>\n<a href=\"#\" target=\"_blank\" rel=\"noopener\">Learn more<\/a><\/div><div class=\"testimonial-author\"><span><\/span><\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/1&#8243;]<div class=\"spacer\" style=\"height: 50px;\"><\/div>[\/vc_column][\/vc_row][vc_row bg_color=&#8221;#222222&#8243; text_color=&#8221;light&#8221; top_padding=&#8221;50&#8243; bottom_padding=&#8221;50&#8243; class=&#8221;row-cta&#8221;][vc_column width=&#8221;1\/1&#8243;][vc_column_text]<h2>Find a Distributor!<\/h2>\r\n<a class=\"button cta\" href=\"\/en\/experience\/\">Check location<\/a>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row type=&#8221;full_width_section&#8221;][vc_column width=&#8221;1\/1&#8243;][\/vc_column][\/vc_row][vc_row bg_color=&#8221;#222222&#8243; text_color=&#8221;light&#8221; top_padding=&#8221;10&#8243; bottom_padding=&#8221;10&#8243;][vc_column width=&#8221;1\/1&#8243;][vc_column_text][\/vc_column_text][\/vc_column][\/vc_row][vc_row text_align=&#8221;center&#8221; top_padding=&#8221;100&#8243; bottom_padding=&#8221;100&#8243;][vc_column width=&#8221;1\/1&#8243;][vc_column_text] Velodyne Acoustics SPL Ultra The SPL Ultra series follows in the footsteps of the legendary DD series, which revolutionized the subwoofer market with the world&#8217;s first automatic room calibration. With SPL Ultra, Velodyne Acoustics is further expressing the concept of the DD series.With the Velodyne Acoustics SPL Ultra series, precise and low-distortion bass becomes very easy to implement. In doing so, the respective amplifiers and the 8-, 10- and 12-inch drivers provide enormous power in the low frequencies. With DSPs (digital signal processors), the SPL Ultra Series is closely monitored to get the best possible performance in the room and minimize distortion. Thanks to the variable crossover and phase control, nothing stands in the way of fine-tuning the subwoofer &#8211; so the low end harmonizes perfectly with the mids and highs of the main speakers. [\/vc_column_text][\/vc_column][\/vc_row][vc_row bg_color=&#8221;#f1f1f1&#8243; text_align=&#8221;center&#8221; top_padding=&#8221;100&#8243; bottom_padding=&#8221;100&#8243;][vc_column column_center=&#8221;true&#8221; width=&#8221;1\/1&#8243;][vc_column_text] The display shows the volume, crossover and phase settings at a glance. The SPL Ultra series also features an automatic equalizer that adjusts the frequency response of the subwoofer to the acoustics of the room and can be operated from the comfort of the sofa. After [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":29399,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-29407","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SPL Ultra - Velodyne Acoustics<\/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:\/\/velodyneacoustics.com\/en\/products\/spl-ultra\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SPL Ultra - Velodyne Acoustics\" \/>\n<meta property=\"og:description\" content=\"[vc_row type=&#8221;full_width_section&#8221;][vc_column width=&#8221;1\/1&#8243;][\/vc_column][\/vc_row][vc_row bg_color=&#8221;#222222&#8243; text_color=&#8221;light&#8221; top_padding=&#8221;10&#8243; bottom_padding=&#8221;10&#8243;][vc_column width=&#8221;1\/1&#8243;][vc_column_text][\/vc_column_text][\/vc_column][\/vc_row][vc_row text_align=&#8221;center&#8221; top_padding=&#8221;100&#8243; bottom_padding=&#8221;100&#8243;][vc_column width=&#8221;1\/1&#8243;][vc_column_text] Velodyne Acoustics SPL Ultra The SPL Ultra series follows in the footsteps of the legendary DD series, which revolutionized the subwoofer market with the world&#8217;s first automatic room calibration. With SPL Ultra, Velodyne Acoustics is further expressing the concept of the DD series.With the Velodyne Acoustics SPL Ultra series, precise and low-distortion bass becomes very easy to implement. In doing so, the respective amplifiers and the 8-, 10- and 12-inch drivers provide enormous power in the low frequencies. With DSPs (digital signal processors), the SPL Ultra Series is closely monitored to get the best possible performance in the room and minimize distortion. Thanks to the variable crossover and phase control, nothing stands in the way of fine-tuning the subwoofer &#8211; so the low end harmonizes perfectly with the mids and highs of the main speakers. [\/vc_column_text][\/vc_column][\/vc_row][vc_row bg_color=&#8221;#f1f1f1&#8243; text_align=&#8221;center&#8221; top_padding=&#8221;100&#8243; bottom_padding=&#8221;100&#8243;][vc_column column_center=&#8221;true&#8221; width=&#8221;1\/1&#8243;][vc_column_text] The display shows the volume, crossover and phase settings at a glance. The SPL Ultra series also features an automatic equalizer that adjusts the frequency response of the subwoofer to the acoustics of the room and can be operated from the comfort of the sofa. 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