{"product_id":"sennheiser-ew-d-asa-q-r-s-4-channel-active-antenna-splitter-470694-mhz-rf-distribution","title":"Sennheiser EW-D ASA (Q-R-S) | 4-Channel Active Antenna Splitter | 470–694 MHz RF Distribution","description":"\u003ch2\u003eActive Antenna Splitter\u003c\/h2\u003e\r\n\u003cp\u003e\r\nThe \u003cstrong\u003eSennheiser EW-D ASA (Q-R-S)\u003c\/strong\u003e is a professional active antenna splitter designed to distribute RF signals from a single antenna pair to multiple wireless microphone receivers. It allows up to four EW-D EM receivers to share one set of antennas while maintaining strong, reliable signal performance across large wireless systems.\r\n\u003c\/p\u003e\r\n\u003cp\u003e\r\nIdeal for touring racks, installed audio systems, houses of worship, and live event production, the unit also provides DC power to connected receivers to reduce cable clutter and simplify rack wiring. Covering the Q, R, and S frequency ranges from 470–694 MHz, it ensures stable RF distribution for modern wireless setups.\r\n\u003c\/p\u003e\r\n\r\n\u003ch2\u003eSennheiser EW-D ASA (Q-R-S) Competitive Differences\u003c\/h2\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003eActive RF distribution for up to four EW-D EM receivers using a single antenna pair\u003c\/li\u003e\r\n  \u003cli\u003eIntegrated DC power distribution reduces rack power supplies and cable clutter\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch2\u003eSennheiser EW-D ASA (Q-R-S) Description\u003c\/h2\u003e\r\n\u003cp\u003e\r\nThe \u003cstrong\u003eSennheiser EW-D ASA (Q-R-S)\u003c\/strong\u003e provides a streamlined solution for expanding wireless microphone systems while maintaining strong RF performance. By receiving wireless signals from one pair of antennas and distributing them to up to four receivers, the splitter helps simplify antenna management and improve signal consistency across multiple channels.\r\n\u003c\/p\u003e\r\n\r\n\u003cp\u003e\r\nThe unit operates across the wide UHF frequency range of 470–694 MHz, supporting the Q, R, and S frequency bands used by Sennheiser EW-D systems. Built with rugged metal construction, the EW-D ASA is designed for dependable performance in demanding touring racks, broadcast setups, and permanent installations.\r\n\u003c\/p\u003e\r\n\r\n\u003cp\u003e\r\nIn addition to RF signal distribution, the splitter also supplies DC power directly to connected receivers. This feature reduces the need for multiple power adapters and helps maintain a cleaner, more organized rack setup. Each receiver connects via included BNC cables for fast integration into an EW-D wireless system.\r\n\u003c\/p\u003e\r\n\r\n\u003cp\u003e\r\nFor increased wireless range and reliability, the system can also be paired with external remote antennas such as directional or dipole antenna options. Positioning antennas closer to transmitters helps optimize RF coverage and minimize dropouts in challenging environments.\r\n\u003c\/p\u003e\r\n\r\n\u003ch3\u003eEW-D ASA Features\u003c\/h3\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003eActive antenna splitter for EW-D wireless microphone systems\u003c\/li\u003e\r\n  \u003cli\u003eSupports up to four EW-D EM receivers\u003c\/li\u003e\r\n  \u003cli\u003eOperates across Q, R, and S bands (470–694 MHz)\u003c\/li\u003e\r\n  \u003cli\u003eDistributes RF signal from a single antenna pair\u003c\/li\u003e\r\n  \u003cli\u003eIntegrated DC power distribution for connected receivers\u003c\/li\u003e\r\n  \u003cli\u003eLow signal loss with balanced amplification\u003c\/li\u003e\r\n  \u003cli\u003eHigh RF isolation between outputs\u003c\/li\u003e\r\n  \u003cli\u003eDurable all-metal chassis for rack systems\u003c\/li\u003e\r\n  \u003cli\u003eCompatible with external remote antennas for extended coverage\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eEW-D ASA Specifications\u003c\/h3\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003eFrequency Range: 470–694 MHz (Q, R, S Bands)\u003c\/li\u003e\r\n  \u003cli\u003eAntenna Splitter: 2 x 1:4 or 1 x 1:8 Active\u003c\/li\u003e\r\n  \u003cli\u003eAmplification: 0 ± 1 dB\u003c\/li\u003e\r\n  \u003cli\u003eIsolation (Output Connector): \u0026gt; 25 dB\u003c\/li\u003e\r\n  \u003cli\u003eReflection Loss: 10 dB (All RF Ports)\u003c\/li\u003e\r\n  \u003cli\u003eOperating Voltage: 12 VDC\u003c\/li\u003e\r\n  \u003cli\u003ePower Supply Input: 100–240 VAC, 50\/60 Hz\u003c\/li\u003e\r\n  \u003cli\u003eCurrent Consumption: Typical 210 mA\u003c\/li\u003e\r\n  \u003cli\u003eMaximum System Current: 3 A (with 4 EW-D EM receivers)\u003c\/li\u003e\r\n  \u003cli\u003eSupplied Power to Antenna Boosters: 12 VDC, 320 mA\u003c\/li\u003e\r\n  \u003cli\u003eSupplied Power to Receivers (A1–A4): 12 VDC, 350 mA (Max 500 mA)\u003c\/li\u003e\r\n  \u003cli\u003eOperating Temperature: 14 to 131°F (-10 to 55°C)\u003c\/li\u003e\r\n  \u003cli\u003eStorage Temperature: -4 to 158°F (-20 to 70°C)\u003c\/li\u003e\r\n  \u003cli\u003eHumidity Range: 5 to 95%\u003c\/li\u003e\r\n  \u003cli\u003eDimensions: 8.3 x 6.6 x 1.7 in (212 x 168 x 43 mm)\u003c\/li\u003e\r\n  \u003cli\u003eWeight: 38.8 oz (1.1 kg)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eWhat's In The Box\u003c\/h3\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003eSennheiser EW-D ASA (Q-R-S) Active Antenna Splitter\u003c\/li\u003e\r\n  \u003cli\u003eNT 12-35 CS Universal Power Supply\u003c\/li\u003e\r\n  \u003cli\u003eEU, UK, and US Power Adapters\u003c\/li\u003e\r\n  \u003cli\u003eBNC RF Connection Cables\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":51791651340570,"sku":"116867","price":699.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/2714\/9082\/files\/sennheiser-ew-d-asa-q-r-s--4-channel-active-antenna-splitter--470694-mhz-rf-distribution_d0e80bb6-7858-4748-b231-dff485c7b937.webp?v=1772655729","url":"https:\/\/squarecable.com\/products\/sennheiser-ew-d-asa-q-r-s-4-channel-active-antenna-splitter-470694-mhz-rf-distribution","provider":"SquareCable","version":"1.0","type":"link"}