{"id":408,"date":"2026-02-02T07:01:26","date_gmt":"2026-02-02T07:01:26","guid":{"rendered":"https:\/\/zsoundpro.com\/?p=408"},"modified":"2026-02-02T07:01:29","modified_gmt":"2026-02-02T07:01:29","slug":"s221-dual-21-inch-subwoofer","status":"publish","type":"post","link":"https:\/\/zsoundpro.com\/fr\/s221-dual-21-inch-subwoofer\/","title":{"rendered":"S221 Dual 21 inch subwoofer"},"content":{"rendered":"
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\"\"<\/figure>\n<\/div>\n\n\n\n

S221 Dual 21 inch subwoofer<\/h1>\n\n\n

Applications<\/h2>\n\n\n\n
    \n
  • Touring performance<\/li>\n\n\n\n
  • Stadium<\/li>\n\n\n\n
  • Theatre<\/li>\n<\/ul>\n\n\n\n

    Feature<\/h2>\n\n\n\n
      \n
    • 1800W (AES) LF driver<\/li>\n\n\n\n
    • Thick and elastic lows<\/li>\n\n\n\n
    • Provide 27 Hz-200 Hz frequency response<\/li>\n\n\n\n
    • Mounted wear-resistant Nylon bar<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n
      \n
      \n

      Technical Specification<\/h3>\n\n\n\n
      Parameter Name<\/th>Parameter Value<\/th><\/tr><\/thead>
      FREQUENCY RESPONSE<\/td>27 Hz~150 Hz (\u00b13 dB), 22 Hz~200 Hz (-10 dB)<\/td><\/tr>
      NOMINAL COVERAGE (-6dB)<\/td>Omnidirectional<\/td><\/tr>
      SENSITIVITY (@1W\/1m)<\/td>99 dB SPL<\/td><\/tr>
      POWER RATING (AES)<\/td>3600W<\/td><\/tr>
      NOMINAL IMPEDANCE<\/td>4 ohm<\/td><\/tr>
      MAXIMUM SPL<\/td>134 dB SPL, 140 dB SPL peak<\/td><\/tr>
      DRIVERS<\/td>LF: 2×21″ (135mm voice coil) neodymium driver<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n
      \n

      Physical Data<\/h3>\n\n\n\n
      Parameter Name<\/th>Parameter Value<\/th><\/tr><\/thead>
      DIMENSIONS (HxWxD)<\/td>650 x 1450 x 850 mm \/ 26″x57″x33″<\/td><\/tr>
      WEIGHT<\/td>132.5 kg \/ 292 lbs<\/td><\/tr>
      CONNECTORS<\/td>2 x NL4 connectors<\/td><\/tr>
      SPEAKER CABLES<\/td>1+1-<\/td><\/tr>
      MATERIALS<\/td>24mm Baltic birch plywood<\/td><\/tr>
      FINISH<\/td>Black Polyurea paintings<\/td><\/tr>
      GRILLE<\/td>Black epoxy mesh grille with acoustically reticulated cloth<\/td><\/tr>
      DIAGRAMS<\/td>Front, Top, Side views and Frequency Response, Impedance graphs provided<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Applications Feature Technical Specification Parameter Name Parameter Value FREQUENCY RESPONSE 27 Hz~150 Hz (\u00b13 dB), 22 Hz~200 Hz (-10 dB) NOMINAL COVERAGE (-6dB) Omnidirectional SENSITIVITY (@1W\/1m) 99 dB SPL POWER RATING (AES) 3600W NOMINAL IMPEDANCE 4 ohm MAXIMUM SPL 134 dB SPL, 140 dB SPL peak DRIVERS LF: 2×21″ (135mm voice coil) neodymium driver Physical […]<\/p>\n","protected":false},"author":1,"featured_media":411,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-408","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pro_audio"],"jetpack_featured_media_url":"https:\/\/zsoundpro.com\/wp-content\/uploads\/2026\/02\/S221-\u4e3b\u56fe.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/posts\/408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/comments?post=408"}],"version-history":[{"count":1,"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/posts\/408\/revisions"}],"predecessor-version":[{"id":412,"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/posts\/408\/revisions\/412"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/media\/411"}],"wp:attachment":[{"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/media?parent=408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/categories?post=408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zsoundpro.com\/fr\/wp-json\/wp\/v2\/tags?post=408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}