{"product_id":"arcam-radia-r25b-10-inch-active-subwoofer-single","title":"ARCAM Radia R25B 10-inch Active Subwoofer (Single)","description":"\u003cp\u003eA powered 10-inch subwoofer designed to give Radia music and home-cinema systems controlled low-frequency extension. ARCAM currently marks this model as coming soon.\u003c\/p\u003e\u003ch2\u003eWhy choose the ARCAM Radia R25B?\u003c\/h2\u003e\u003cp\u003eFor cinema LFE effects or supporting compact stereo speakers with low-bass weight. As the manufacturer marks this model as coming soon, please ask Kronos AV to confirm delivery timing.\u003c\/p\u003e\u003ch2\u003eKey specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e250mm (10-inch) coated fibre-composite driver in aluminium cast frame\u003c\/li\u003e\n\u003cli\u003e750W RMS \/ 1500W peak Class D amplification\u003c\/li\u003e\n\u003cli\u003e26Hz–150Hz frequency response (±6dB)\u003c\/li\u003e\n\u003cli\u003eVariable crossover (50–150Hz), level and phase controls\u003c\/li\u003e\n\u003cli\u003eRCA LFE\/line input and 3.5mm 12V trigger\u003c\/li\u003e\n\u003cli\u003eRear-ported bass-reflex cabinet in Black Natural Walnut finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications – ARCAM R25B\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSpeaker type\u003c\/th\u003e\n\u003ctd\u003eActive subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDriver\u003c\/th\u003e\n\u003ctd\u003e250mm (10in) coated fibre-composite woofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAmplifier\u003c\/th\u003e\n\u003ctd\u003e750W digital amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSold as\u003c\/th\u003e\n\u003ctd\u003eSingle active subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003csmall\u003eSpecification details from the ARCAM Radia October 2026 dealer price list. Some advanced electrical measurements are not provided in that document; consult the latest ARCAM product sheet before installation.\u003c\/small\u003e\u003c\/p\u003e\u003ch2\u003eWhat can an active subwoofer add?\u003c\/h2\u003e\u003cp\u003eThe R25B combines a 250mm coated fibre-composite bass driver with a 750W built-in digital amplifier. It is intended to reproduce low frequencies that smaller main speakers may not cover and to support cinema low-frequency effects.\u003c\/p\u003e\u003ch2\u003eARCAM R25B – Frequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow should I integrate it?\u003c\/h3\u003e\u003cp\u003eSubwoofer performance depends strongly on the room, crossover selection, level and phase. Start with the amplifier or AV processor's recommended bass-management settings, then refine them after positioning and listening.\u003c\/p\u003e\u003ch3\u003eDo I need an extra power amplifier?\u003c\/h3\u003e\u003cp\u003eNo. The R25B includes its own amplification but requires an appropriate audio signal and mains power.\u003c\/p\u003e\u003ch2\u003eOur Advice at Kronos AV\u003c\/h2\u003e\u003cp\u003eOur advice\u003c\/p\u003e\u003cp\u003eSpeak to our team for help with room placement, system compatibility and the right equipment for your listening priorities.\u003c\/p\u003e","brand":"ARCAM","offers":[{"title":"Default Title","offer_id":57656280908149,"sku":null,"price":2599.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2222\/0805\/files\/arcam-radia-r25b-hero.png?v=1792067529","url":"https:\/\/www.kronosav.com\/products\/arcam-radia-r25b-10-inch-active-subwoofer-single","provider":"Kronos AV","version":"1.0","type":"link"}