{"id":1606,"date":"2026-03-16T14:52:40","date_gmt":"2026-03-16T06:52:40","guid":{"rendered":"http:\/\/www.surinworld.com\/?post_type=product&#038;p=1606"},"modified":"2026-03-18T22:04:09","modified_gmt":"2026-03-18T14:04:09","slug":"s-4000-true-diversity-professional-one-to-four-wireless-square-tube-conference-microphone","status":"publish","type":"product","link":"http:\/\/www.surinworld.com\/index.php\/product\/s-4000-true-diversity-professional-one-to-four-wireless-square-tube-conference-microphone\/","title":{"rendered":"S-4000 true diversity professional one to four wireless square tube conference microphone"},"content":{"rendered":"<p>With diversity receiving technology, the signal is more stable, the receiving distance is longer, and the application is wider.\uff1b<\/p>\n<p>\u25cfUsing a 2U standard chassis, the system menu is displayed on a large color screen, the content is clearer, and the working status of each channel of radio frequency and audio is displayed by independent LED lights, which is more intuitive. \uff1b<\/p>\n<p>\u25cf The four-channel volume is independently adjustable, the SQ is independently adjustable, and the IR and INFRARED frequency are independently controlled. Provides 4+2 audio output mode, which greatly facilitates users&#8217; daily use\uff1b<\/p>\n<p>\u25cfReal-time monitoring of the transmitter battery level, the system menu memory has 3 sets of stacking frequencies that can be retrieved and used, and the transmitter conference\/handheld\/lavalier can be mixed and matched.\uff1b<\/p>\n<p>\u25cfThe operating frequency of the system is set to 4 X 50 frequency points. Each channel is equipped with 50 frequency points adjustable. The system frequency range defaults to 640-690 MHZ \uff1b<\/p>\n<p>\u25cfProfessional performance-level phase-locking circuit, combined with noise-locking squelch control and digital pilot technology, when the transmitter is turned off, the pilot control mutes the AF signal to suppress noise, and at the same time mutes the corresponding receiver to ensure the effective blocking of interference signals.\uff1b<\/p>\n<p>Receiver specifications\uff1a<\/p>\n<p>\u25cfOscillation mode: PLL phase lock frequency synthesis<\/p>\n<p>\u25cfRadio frequency stability\uff1a\u00b10.005%\uff08-10~50\u2103\uff09<\/p>\n<p>\u25cfCarrier frequency: UHF640~690MHz<\/p>\n<p>\u25cfFrequency width: 50MHz<\/p>\n<p>\u25cfChannel: 200CH (in steps of 250kHz)<\/p>\n<p>\u25cfOperation method: manual adjustment<\/p>\n<p>\u25cfSensitivity: The offset is equal to 25kHz.When entering\u201395dBm, S\/N&gt;80dB<\/p>\n<p>\u25cfMaximum offset: \u00b148kHz<\/p>\n<p>\u25cfComprehensive S\/N ratio: &gt;102dB<\/p>\n<p>\u25cfComprehensive T.H.D\uff1a\uff1c0.5%@1KHz<\/p>\n<p>\u25cfFrequency response: 60Hz~15kHz<\/p>\n<p>\u25cfMaximum output voltage: 0dBV@45KHz<\/p>\n<p>\u25cfOutput socket: XLR balanced and 6.3 unbalanced<\/p>\n<p>\u25cfVolume output adjustment: potentiometer type<\/p>\n<p>\u25cfMute control mode: dual mute control of sound code and noise<\/p>\n<p>\u25cfMute adjustment: -65dB~-100dB<\/p>\n<p>\u25cfSQ adjustable: SQ adjustable (about 30 meters~200 meters distance adjustable)<\/p>\n<p>\u25cfPower supply: DC12~15V\/1000-2000mA<\/p>\n<p>Transmitter specifications\uff1a<\/p>\n<p>\u25cfThe base is CNC machined and the aluminum alloy oxidation panel is simple and solemn.\uff1b<\/p>\n<p>\u25cfAluminum alloy square tube microphone design, built-in high-fidelity microphone, sensitive pickup, clear voice\uff1b<\/p>\n<p>\u25cf2.4-inch screen, with battery display, channel display, ID number, level size display\uff1b<\/p>\n<p>\u25cfWith speech time timing display\uff1b<\/p>\n<p>\u25cfOscillation mode: PLL phase lock frequency synthesis<\/p>\n<p>\u25cfCarrier frequency band: UHF640~690MHz<\/p>\n<p>\u25cfFrequency band width: 50MHz<\/p>\n<p>\u25cfFrequency adjustment: automatic tracking and locking of the receiver&#8217;s working channel\/manual adjustment<\/p>\n<p>\u25cfOutput power: 15mW<\/p>\n<p>\u25cfHarmonic radiation: &lt;55dBc<\/p>\n<p>\u25cfMaximum offset: \u00b148kHz<\/p>\n<p>\u25cfSound head: capacitive<\/p>\n<p>\u25cfBattery used: 3 No. 5 (AA) batteries<\/p>\n<p>\u25cfOperation display: LCD displays battery capacity and channel at the same time<\/p>\n","protected":false},"excerpt":{"rendered":"<p>With diversity receiving technology, the signal is more [&hellip;]<\/p>\n","protected":false},"featured_media":1607,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[15],"product_tag":[],"class_list":["post-1606","product","type-product","status-publish","has-post-thumbnail","product_cat-wireless-microphone-series","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/product\/1606","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/comments?post=1606"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/media\/1607"}],"wp:attachment":[{"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/media?parent=1606"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=1606"},{"taxonomy":"product_cat","embeddable":true,"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=1606"},{"taxonomy":"product_tag","embeddable":true,"href":"http:\/\/www.surinworld.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=1606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}