{"product_id":"in-phase-xtb-828r-8-300w-active-subwoofer-with-passive-radiator-and-class-d-amplifer","title":"In Phase XTB-828R 8\" 300W Active Subwoofer with Passive Radiator and Class D Amplifer","description":"\u003cp\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003e8\" 300W Active Subwoofer with Passive Radiator and Class D Amplifier - In Phase Car Audio XTB-828R\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eXTB-828R is a passive radiator-equipped active sealed subwoofer enclosure. Hit really low frequencies and experience true bass accuracy not normally found in bog-standard active subwoofer. Equipped with an all-weather glass fibre woven cone 20cm (8') drive unit, paired with a passive radiator in sealed enclosure technology, it provides deep and controlled bass frequencies. Its built-in 300W class D amplifier offers high-power handling and numerous controls.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eXTB-828R has high and low-level inputs that can be plugged with after-market and OEM headunits.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThis FOUR-in-one enclosure reduces overall dimensions while offering a great bass level. This comes complete with a wiring kit apart from RCA cables. If fitting to an aftermarket headunit, you will need RCA cables\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhat on Earth is a 'passive radiator'?\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eA Passive Radiator is a speaker with no voice coil or magnet, basically a speaker cone. This is not connected to the amp at all. The purpose of this speaker is to allow the trapped sound pressure in the sealed enclosure to excite a resonance that makes it easier for the speaker system to create the deepest pitches (e.g bassline). In short, it gives you the benefit of ported enclosures without the downsides. This leads to better sound quality, with a linear frequency response of the sealed cabinet and the higher output you get from a ported design. This is also achieved in a smaller size than the ported subwoofer. You also do not have the same issues with port noise, and instead, you end up with a smooth bass.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eClass D Amplifier\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eA robust, compact, and efficient Class D amplifier is mounted to this enclosure. This is the driving force behind the sub. Only the finest components in its category will do. Offering up to 300W peak and 200W RMS Power\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eCompact Design\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThis sub is only the size of a small desktop computer case. This small footprint allows the user to add thumping bass without compromising space in the boot.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSuperior Subwoofer Cone\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThe glass fibre subwoofer cone is purpose-built for this package, it is lightweight, durable and rigid without compromising sound quality. A lot of market leaders have a generic subwoofer (from their range) then they build a box to suit. Which works to an extent, this package offers you something more unique and performance-based.\u003c\/p\u003e \u003cp\u003e'Even by In Phase Standards, this is unprecedented, unique and absurdly amazing. Passive Radiator technology in this application just makes sense. I am struggling to understand why the big players like Alpine, Pioneer, Kenwood, JVC, Focal or JL Audio haven't jumped on this trend\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eProduct Features:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cdiv\u003e \u003cul class=\"specsList\"\u003e \u003cli id=\"Glos1\"\u003eRCA Input Sensitivity 0.2-6V\u003c\/li\u003e \u003cli id=\"Glos2\"\u003eHigh-Level Input Sensitivity 1V\u003c\/li\u003e \u003cli id=\"Glos3\"\u003eComes with Remote\u003c\/li\u003e \u003cli id=\"Glos4\"\u003ePhase Switch 0-180 Degrees\u003c\/li\u003e \u003cli id=\"Glos5\"\u003eBass Boost 0dB~+12dB\u003c\/li\u003e \u003cli id=\"Glos6\"\u003eSubsonic Filter 20-Hz-50Hz\u003c\/li\u003e \u003cli id=\"Glos7\"\u003eLPF 50-150Hz\u003c\/li\u003e \u003cli id=\"Glos8\"\u003eT.H.D \u0026lt;0.38%\u003c\/li\u003e \u003cli id=\"Glos9\"\u003eRMS Power 200W\u003c\/li\u003e \u003cli id=\"Glos10\"\u003eMax Power 300W\u003c\/li\u003e \u003cli id=\"Glos11\"\u003eSignal Sense\u003c\/li\u003e \u003cli id=\"Glos12\"\u003eSoft Delay Remote Turn on\u003c\/li\u003e \u003cli id=\"Glos13\"\u003eProtection Circuit- Thermal and Short\u003c\/li\u003e \u003cli id=\"Glos14\"\u003eGreen LED for Power\u003c\/li\u003e \u003cli id=\"Glos15\"\u003eRed LED for Protection Mode\u003c\/li\u003e \u003cli id=\"Glos16\"\u003eSingle Voice Coil Sub\u003c\/li\u003e \u003cli id=\"Glos17\"\u003eS\/N Ratio \u0026gt;88dB\u003c\/li\u003e \u003cli id=\"Glos18\"\u003eFuse Rating 25A\u003c\/li\u003e \u003cli id=\"Glos19\"\u003eImpedance 4 ohms\u003c\/li\u003e \u003cli id=\"Glos20\"\u003eDimensions 248x255x250 (MM)\u003c\/li\u003e \u003cli id=\"Glos21\"\u003eWeight: 8kg\u003c\/li\u003e \u003c\/ul\u003e \u003cp class=\"a-size-extra-large a-spacing-base a-text-center\"\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eTechnical Specification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cdiv class=\"a-row\"\u003e \u003cdiv class=\"a-column a-span6\"\u003e \u003ctable class=\"a-bordered a-horizontal-stripes aplus-tech-spec-table\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eRCA Input Sensitivity\u003c\/td\u003e \u003ctd\u003e0.2 - 6 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eHigh-Level Input Sensitivity\u003c\/td\u003e \u003ctd\u003e1 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003ePhase Switch\u003c\/td\u003e \u003ctd\u003e0 - 180 Degrees\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eDimensions\u003c\/td\u003e \u003ctd\u003e248 mm x 255 mm x 250 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eWeight\u003c\/td\u003e \u003ctd\u003e8 kg\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eRMS Power\u003c\/td\u003e \u003ctd\u003e200 W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eMax Power\u003c\/td\u003e \u003ctd\u003e300 W\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003cdiv class=\"a-column a-span6 a-span-last\"\u003e \u003ctable class=\"a-bordered a-horizontal-stripes aplus-tech-spec-table\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eS\/N Ratio\u003c\/td\u003e \u003ctd\u003e\u0026gt; 88 dB\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eFuse Rating\u003c\/td\u003e \u003ctd\u003e25 A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eBass Boost\u003c\/td\u003e \u003ctd\u003e0 dB ~ +12 dB\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eProtection Circuit\u003c\/td\u003e \u003ctd\u003eThermal and short\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eImpedance\u003c\/td\u003e \u003ctd\u003e4 ohms\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"a-text-bold\"\u003eLPF\u003c\/td\u003e \u003ctd\u003e \u003cp\u003e50 - 150 Hz\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e","brand":"In Phase","offers":[{"title":"Default Title","offer_id":52761086656778,"sku":"XTB828R","price":129.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/4578\/4842\/files\/xtb828r-1.jpg?v=1774291271","url":"https:\/\/audiovisualworld.co.uk\/products\/in-phase-xtb-828r-8-300w-active-subwoofer-with-passive-radiator-and-class-d-amplifer","provider":"Audio Visual World","version":"1.0","type":"link"}