{"product_id":"adastra-rs121-100v-line-class-d-slave-amplifier","title":"Adastra RS121 100V Line Class-D Slave Amplifier","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Adastra RS121 is a 100V line slave amplifier built for medium to large installations. It takes standard line level audio from a mixer or an RM series mixer amplifier, then drives your speaker runs from a compact, rack-mountable housing. As a Class-D design it stays efficient and lightweight, so it slots into a 19\" rack without adding needless weight or heat to the system.\u003c\/p\u003e\n\u003cp\u003eConnections are flexible. Line level inputs run through RCA sockets (phono) or hard-wired removable screw terminals, also known as Euroblock, so you can wire it your way. A separate screw terminal handles 100V input, which lets the RS121 extend an existing 100V installation by connecting straight to the speaker feed, including long distance feeds over standard double-insulated cable. Slave outputs can be cascaded onto further RS slaves, so you can build larger systems as your needs grow. A 24V terminal connects to a security or alert panel and mutes the output during alarm triggering.\u003c\/p\u003e\n\u003cp\u003eSpeaker outputs are switchable between 100V and low impedance on the RS121, with low impedance stable down to 2 Ohms. That means you can connect multiple low impedance speakers if you prefer, or stay on the 100V line for longer runs and simpler wiring. Frequency response is 90Hz-20kHz on 100V and 17Hz-90kHz at 2 Ohms, with THD below 1.0%. A single master volume control keeps operation straightforward. The RS121 runs from a 175-264Vac 50Hz IEC supply, so it fits into most standard mains setups without fuss.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse rating\u003c\/td\u003e\n\u003ctd\u003eT1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power : rms\u003c\/td\u003e\n\u003ctd\u003e120W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e433mm x 267mm x 44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4.80KG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003e175-264Vac 50Hz (IEC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput signal\u003c\/td\u003e\n\u003ctd\u003eSlave line in (RCA\/screw terminal), 100V in (screw terminal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput : signal\u003c\/td\u003e\n\u003ctd\u003eSlave line out (RCA\/screw terminal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs : speaker\u003c\/td\u003e\n\u003ctd\u003e100V or 2 Ohm min. (screw terminals)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControls\u003c\/td\u003e\n\u003ctd\u003eMaster volume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMute\u003c\/td\u003e\n\u003ctd\u003e24V alarm contacts (screw terminal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e90Hz-20kHz (100V), 17Hz-90kHz (2Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/953201UK.pdf?v=1785059104\" target=\"_blank\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the RS121 slave amplifier do?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt takes line level audio from a mixer or RM series mixer amplifier and drives 100V or low impedance speakers. It can also extend an existing 100V system or expand a setup by cascading onto further RS slaves.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use low impedance speakers as well as 100V?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Speaker outputs on the RS121 are switchable between 100V and low impedance, and the low impedance side is stable down to 2 Ohms, so you can run multiple speakers if preferred.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat connections are available for the inputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLine level inputs use RCA sockets (phono) or removable screw terminals (Euroblock). A separate screw terminal accepts 100V input for extending an existing installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the alarm mute work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 24V terminal connects to a security or alert panel. When an alarm is triggered, it mutes the amplifier output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the RS121 mounted?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt fits a standard 19\" rack. The RS121 is a 1U unit, part of a range that also includes 2U models in the RS series.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power supply does it need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt runs from a 175-264Vac 50Hz mains supply via IEC connector, suiting most standard installations.\u003c\/p\u003e\n","brand":"AVSL","offers":[{"title":"Default Title","offer_id":53272133665035,"sku":"953.201UK","price":249.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/953201UK_0.jpg?v=1785059123","url":"https:\/\/niori.co.uk\/products\/adastra-rs121-100v-line-class-d-slave-amplifier","provider":"Niori","version":"1.0","type":"link"}