{"id":6671,"date":"2018-01-20T08:56:47","date_gmt":"2018-01-20T08:56:47","guid":{"rendered":"http:\/\/www.audioexcite.com\/?page_id=6671"},"modified":"2018-01-20T11:59:02","modified_gmt":"2018-01-20T11:59:02","slug":"sb-acoustics-satori-wo24p-4","status":"publish","type":"page","link":"https:\/\/www.audioexcite.com\/?page_id=6671","title":{"rendered":"SB Acoustics &#8220;Satori&#8221; WO24P-4"},"content":{"rendered":"<h3><span style=\"color: #3366ff;\">Overview:<\/span><\/h3>\n<p>&nbsp;<\/p>\n<p>The SB Acoustics Satori WO2P-4 is an 4\u2126 9.5\u2033 woofer from SB Acoustics. The woofer has a 49.5mm voice-coil with a 17mm (p-p) linear coil travel. It&#8217;s fitted with dual shorting rings in motor system for reduced distortion.<a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-4.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-6672 alignright\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-4-191x300.jpg\" alt=\"\" width=\"191\" height=\"300\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-4-191x300.jpg 191w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-4.jpg 456w\" sizes=\"auto, (max-width: 191px) 100vw, 191px\" \/><\/a><\/p>\n<p><strong>Key features:<\/strong><\/p>\n<ul>\n<li>Hard paper cone for improved piston operation (made in-house)<\/li>\n<li>Large optimized motor system with under-cut pole piece and<\/li>\n<li>dual shorting rings<\/li>\n<li>Vented aerodynamic cast aluminium chassis for optimum<\/li>\n<li>strength and low compression<\/li>\n<li>Soft low damping rubber surround for optimum transient response<\/li>\n<li>Linear symmetric suspension design for improved dynamic<\/li>\n<li>performance<\/li>\n<li>Non-conducting fibre glass voice coil former for minimum damping<\/li>\n<li>Long life silver lead wires attached 180\u00b0 apart for improved stability<\/li>\n<li>Vented pole piece for reduced compression<\/li>\n<li>High piston to chassis diameter ratio<\/li>\n<li>Gasket and bolt hole protrusions for reduced coupling to speaker cabinet<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>SB Acoustics Spec sheet: <a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/9in-Satori-WO24P-4.pdf\">9in Satori WO24P-4<\/a><\/p>\n<h3><span style=\"color: #3366ff;\">T\/S Parameters:<\/span><\/h3>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/T-S-parameters-WO24P-4_AE.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6675\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/T-S-parameters-WO24P-4_AE.jpg\" alt=\"\" width=\"600\" height=\"459\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/T-S-parameters-WO24P-4_AE.jpg 691w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/T-S-parameters-WO24P-4_AE-300x230.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #3366ff;\">Impedance:<\/span><\/h3>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Imp-WO24P-4-1L-vs-2R.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6677\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Imp-WO24P-4-1L-vs-2R.jpg\" alt=\"\" width=\"720\" height=\"372\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Imp-WO24P-4-1L-vs-2R.jpg 1614w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Imp-WO24P-4-1L-vs-2R-300x155.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Imp-WO24P-4-1L-vs-2R-768x396.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Imp-WO24P-4-1L-vs-2R-1024x528.jpg 1024w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<p>(click on picture to zoom)<\/p>\n<p><strong>Blue:<\/strong> Mid-woofer sample #1<\/p>\n<p><strong>Green:<\/strong> Mid-woofer sample #2<strong><br \/>\n<\/strong><\/p>\n<p>A small resonance issue around 1.1kHz<\/p>\n<h3><span style=\"color: #3366ff;\">Frequency:<\/span><\/h3>\n<p>&nbsp;<\/p>\n<p><strong>Frequency measurement conditions:<\/strong><\/p>\n<p>The mid-woofer is measured mounted on a baffle in an 27 liter closed enclosure with the following conditions:<\/p>\n<p><strong>Baffle size (WxH):<\/strong> 30\u00d740cm, no flush mount.<br \/>\n<strong>Driver position:<\/strong> Mounted on center-line with driver unit center 24cm from the top of the baffle.<br \/>\n<strong>Mic position:<\/strong> 1m distance, on woofer-axis. Nearfield at 10cm from dust-cap.<br \/>\n<strong>Smoothing:<\/strong> 1\/24 octave smoothing applied.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-NF-10cm-1L-vs-2R.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6680 size-large\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-NF-10cm-1L-vs-2R-1024x325.jpg\" alt=\"\" width=\"720\" height=\"229\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-NF-10cm-1L-vs-2R-1024x325.jpg 1024w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-NF-10cm-1L-vs-2R-300x95.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-NF-10cm-1L-vs-2R-768x244.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-NF-10cm-1L-vs-2R.jpg 1287w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<p>(click on picture to zoom)<\/p>\n<p>Frequency response on-axis\u00a0near-field 10cm from dust-cap (Blue=sample#1, Red=sample#2).<\/p>\n<p><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0deg-1L-vs-2R.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6681 size-large\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0deg-1L-vs-2R-1024x325.jpg\" alt=\"\" width=\"720\" height=\"229\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0deg-1L-vs-2R-1024x325.jpg 1024w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0deg-1L-vs-2R-300x95.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0deg-1L-vs-2R-768x244.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0deg-1L-vs-2R.jpg 1287w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<p>(click on picture to zoom)<\/p>\n<p>Frequency response 1m, on-axis (Blue=sample#1 Red=sample#2).<\/p>\n<p><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0-15-22deg.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6682 size-large\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0-15-22deg-1024x325.jpg\" alt=\"\" width=\"720\" height=\"229\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0-15-22deg-1024x325.jpg 1024w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0-15-22deg-300x95.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0-15-22deg-768x244.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-0-15-22deg.jpg 1287w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<p>(click on picture to zoom)<\/p>\n<p>0deg = Blue<br \/>\n15deg = Red<br \/>\n22.5deg = Green<\/p>\n<p><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-30-45-60deg.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6683 size-large\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-30-45-60deg-1024x325.jpg\" alt=\"\" width=\"720\" height=\"229\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-30-45-60deg-1024x325.jpg 1024w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-30-45-60deg-300x95.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-30-45-60deg-768x244.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/Freq-WO24P-4-30-45-60deg.jpg 1287w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<p>(click on picture to zoom)<\/p>\n<p>30deg = Blue<br \/>\n45deg = Red<br \/>\n60deg = Green<\/p>\n<h3><span style=\"color: #3366ff;\">Distortion:<\/span><\/h3>\n<p>&nbsp;<\/p>\n<p><strong>Measurement setup:<\/strong><\/p>\n<ul>\n<li>Woofer near-field measurement at 20cm<\/li>\n<li>Frequency range woofer: 100-10000Hz<\/li>\n<li>Baffle size WxH: 30\u00d740cm<\/li>\n<\/ul>\n<p>The distortion measurements are done in near-field and the amplifier output level was adjusted for each driver so that the fundamental is 90dB and 95dB at 1m. This setting simulates medium-high and high listening levels.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-90db.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6687\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-90db.jpg\" alt=\"\" width=\"360\" height=\"196\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-90db.jpg 1404w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-90db-300x164.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-90db-768x419.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-90db-1024x559.jpg 1024w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/a><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-90db.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6688\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-90db.jpg\" alt=\"\" width=\"360\" height=\"196\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-90db.jpg 1404w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-90db-300x164.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-90db-768x419.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-90db-1024x559.jpg 1024w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/a><\/p>\n<p>(click on picture to zoom)<\/p>\n<p><strong>90dB @ 1m<\/strong><\/p>\n<p>Left = Sample #1<\/p>\n<p>Right = Sample #2<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-95db.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6689\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-95db.jpg\" alt=\"\" width=\"360\" height=\"196\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-95db.jpg 1404w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-95db-300x164.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-95db-768x419.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-41-18cm-95db-1024x559.jpg 1024w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/a><a href=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-95db.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6690\" src=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-95db.jpg\" alt=\"\" width=\"360\" height=\"196\" srcset=\"https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-95db.jpg 1404w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-95db-300x164.jpg 300w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-95db-768x419.jpg 768w, https:\/\/www.audioexcite.com\/wp-content\/uploads\/2018\/01\/WO24P-42-18cm-95db-1024x559.jpg 1024w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/a><\/p>\n<p>(click on picture to zoom)<\/p>\n<p><strong>95dB @ 1m<\/strong><\/p>\n<p>Left = Sample #1<\/p>\n<p>Right = Sample #2<\/p>\n<p>The Satori WO24P-4 woofer is a low distortion driver. The resonance issue shown in the impedance plot around 1.1kHz is shown here as an elevated odd order distortion.\u00a0 The woofer&#8217;s odd-order distortion is low below 0.8kHz and it has an increasing odd-order distortion above 0.8kHz.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview: &nbsp; The SB Acoustics Satori WO2P-4 is an 4\u2126 9.5\u2033 woofer from SB Acoustics. The woofer has a 49.5mm voice-coil with a 17mm (p-p) linear coil travel. It&#8217;s fitted with dual shorting rings in motor system for reduced distortion. Key features: Hard paper cone for improved piston operation (made in-house) Large optimized motor system [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6671","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/pages\/6671","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6671"}],"version-history":[{"count":7,"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/pages\/6671\/revisions"}],"predecessor-version":[{"id":6702,"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/pages\/6671\/revisions\/6702"}],"wp:attachment":[{"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}