{"id":287,"date":"2026-08-26T20:30:44","date_gmt":"2026-08-26T18:30:44","guid":{"rendered":"http:\/\/shop-staging.mirroredgenetworks.com\/product\/ascendo-the21-sub-wf-pro-passive-sealed\/"},"modified":"2026-08-30T23:36:28","modified_gmt":"2026-08-30T21:36:28","slug":"ascendo-the21-sub-wf-pro-passive-sealed","status":"publish","type":"product","link":"https:\/\/mirroredgenetworks.com\/shop\/product\/ascendo-the21-sub-wf-pro-passive-sealed\/","title":{"rendered":"ASCENDO THE21 SUB WF PRO PASSIVE SEALED"},"content":{"rendered":"<h2>ASCENDO THE21 SUB WF PRO PASSIVE SEALED overview<\/h2>\n<p>The ASCENDO THE21 SUB WF PRO PASSIVE SEALED is passive cinema subwoofer engineered for controlled directivity, high dynamic capability and integration into professionally designed immersive audio systems. Product selection, amplification, DSP, placement and acoustic integration should be determined as part of the complete room design.<\/p>\n<h2>Key benefits<\/h2>\n<ul>\n<li>Engineered specifically for high-performance cinema and immersive audio<\/li>\n<li>Professional system matching for output, coverage and room volume<\/li>\n<li>Designed for integration with ASCENDO amplification, DSP and bass systems<\/li>\n<li>Installation planning available from Mirror Edge Networks<\/li>\n<\/ul>\n<h2>Technical specifications<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Speaker Type<\/th>\n<td>21\u201d forward-firing, dual gap motor structure with 2 inner and 2 outer voice coils, neodymium motor<\/td>\n<\/tr>\n<tr>\n<th>Principle<\/th>\n<td>Sealed<\/td>\n<\/tr>\n<tr>\n<th>Passive | Active<\/th>\n<td>Passive<\/td>\n<\/tr>\n<tr>\n<th>XMAX<\/th>\n<td>17.5 mm excursion each direction (35 mm linear), voice coil remaining in homogeneous magnetic field, linear and lower distortion<\/td>\n<\/tr>\n<tr>\n<th>SPL Peak (Peak \/ Half Space 2pi)<\/th>\n<td>Measured Data 139 dB @ 63 Hz<\/td>\n<\/tr>\n<tr>\n<th>Frequency Range<\/th>\n<td>Measured Data (without DSP) 62 Hz &#8211; 500 Hz \/ -3 dB 28 Hz &#8211; 500 Hz \/ -12 dB<\/td>\n<\/tr>\n<tr>\n<th>Power Handling<\/th>\n<td>4000 W<\/td>\n<\/tr>\n<tr>\n<th>Efficiency<\/th>\n<td>99 dB \/ 1 W\/m 2 pi<\/td>\n<\/tr>\n<tr>\n<th>Impedance<\/th>\n<td>4 \u03a9<\/td>\n<\/tr>\n<tr>\n<th>Directivity Horizontal x Vertical in deg\u00b0<\/th>\n<td>360\u00b0<\/td>\n<\/tr>\n<tr>\n<th>Input Terminal<\/th>\n<td>Neutrik Speakon<\/td>\n<\/tr>\n<tr>\n<th>Dimensions (W\/H\/D) mm (Without Grille)<\/th>\n<td>610 | 635 | 518 (Height without feet: 610)<\/td>\n<\/tr>\n<tr>\n<th>Weight<\/th>\n<td>94.80 lbs | 43 kg<\/td>\n<\/tr>\n<tr>\n<th>Enclosure<\/th>\n<td>Internally braced MDF<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>System design and installation<\/h2>\n<p>This product requires appropriate amplification, processing, mounting and calibration. Mirror Edge Networks will confirm compatibility, room requirements, availability and the complete system configuration before supply.<\/p>\n<h2>Mirror Edge Networks support<\/h2>\n<p>ASCENDO products are supplied on a Request Quote basis. Free nationwide delivery is available, typically within 3\u20135 business days where supplier stock and installation requirements allow.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ASCENDO THE21 SUB WF PRO PASSIVE SEALED: passive cinema subwoofer for professionally engineered private cinema systems. Request a quote.<\/p>\n","protected":false},"featured_media":680,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[16],"product_tag":[],"class_list":["post-287","product","type-product","status-publish","has-post-thumbnail","product_cat-subwoofers","pa_brand-ascendo","first","instock","taxable","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/product\/287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/comments?post=287"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/media\/680"}],"wp:attachment":[{"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/media?parent=287"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/product_brand?post=287"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/product_cat?post=287"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mirroredgenetworks.com\/shop\/wp-json\/wp\/v2\/product_tag?post=287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}