{"product_id":"kef-bl12b-outdoor-bollard-subwoofer","title":"KEF - BL12b - Outdoor Subwoofer","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eKEF BL12b Outdoor Subwoofer\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003ch2\u003ePowerful 12-Inch Bass for Large Outdoor Spaces\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKEF BL12b Outdoor Bollard Subwoofer\u003c\/strong\u003e delivers powerful, controlled low-frequency performance across large gardens, pool areas, patios and commercial outdoor environments.\u003c\/p\u003e\n\u003cp\u003eIts substantial \u003cstrong\u003e300mm long-throw bass driver\u003c\/strong\u003e produces deep, articulate bass with the output required for expansive open-air installations. Full \u003cstrong\u003e360-degree coverage\u003c\/strong\u003e distributes low frequencies evenly around the subwoofer, while a nominal coverage area of \u003cstrong\u003e200 square metres\u003c\/strong\u003e supports larger landscape audio systems.\u003c\/p\u003e\n\u003cp\u003eA rugged, UV-resistant enclosure, \u003cstrong\u003eIPX5 weather protection\u003c\/strong\u003e and multiple mounting options make the BL12b suitable for permanent outdoor installation.\u003c\/p\u003e\n\u003ch2\u003e300mm Long-Throw Bass Driver\u003c\/h2\u003e\n\u003cp\u003eAt the heart of the BL12b is a \u003cstrong\u003e300mm or 12-inch long-throw low-frequency driver\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe high-excursion design moves the volume of air needed to produce convincing bass in outdoor spaces, where there are no surrounding walls to reinforce low frequencies. Its acoustically optimised enclosure maintains controlled, full-bodied reproduction while reducing unwanted distortion.\u003c\/p\u003e\n\u003cp\u003eThe BL12b reaches down to \u003cstrong\u003e21Hz at −10dB\u003c\/strong\u003e, adding substantial depth and impact to music and outdoor entertainment.\u003c\/p\u003e\n\u003ch2\u003eDeep Bass Beyond the Listening Room\u003c\/h2\u003e\n\u003cp\u003eReproducing bass outdoors requires significantly more displacement and output than a conventional indoor installation.\u003c\/p\u003e\n\u003cp\u003eThe BL12b is engineered specifically for these demanding conditions. Its large driver produces the scale required to complement multiple outdoor speakers without sacrificing accuracy or musical definition.\u003c\/p\u003e\n\u003cp\u003eIt is suitable for everything from premium residential landscape audio to large hospitality, entertainment and recreation spaces.\u003c\/p\u003e\n\u003ch2\u003e360-Degree Low-Frequency Coverage\u003c\/h2\u003e\n\u003cp\u003eThe KEF BL12b provides \u003cstrong\u003e360-degree nominal coverage\u003c\/strong\u003e, distributing bass in every direction around the enclosure.\u003c\/p\u003e\n\u003cp\u003eThis omnidirectional design allows the subwoofer to serve a broad outdoor area without being aimed towards a specific listening position. It also supports flexible placement within gardens and landscaped environments.\u003c\/p\u003e\n\u003cp\u003eWith a nominal coverage area of \u003cstrong\u003e200m²\u003c\/strong\u003e, the BL12b can provide low-frequency support across substantial outdoor installations.\u003c\/p\u003e\n\u003ch2\u003eMaximum Output of 115dB\u003c\/h2\u003e\n\u003cp\u003eThe BL12b delivers a maximum sound pressure level of \u003cstrong\u003e115dB\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis considerable output allows it to add authoritative bass to larger systems while retaining the control required for high-quality music reproduction.\u003c\/p\u003e\n\u003cp\u003eFor expansive properties, multiple BL12b subwoofers can be distributed throughout the landscape to improve coverage and produce more consistent bass across separate listening areas.\u003c\/p\u003e\n\u003ch2\u003eDesigned for KEF Network DSP Amplifiers\u003c\/h2\u003e\n\u003cp\u003eThe BL12b is designed for operation with compatible \u003cstrong\u003eKEF Network DSP Amplifiers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eKEF recommends \u003cstrong\u003e400 watts of amplifier power\u003c\/strong\u003e and a \u003cstrong\u003e170Hz low-pass filter\u003c\/strong\u003e. Compatible DSP amplification provides the crossover management, equalisation and protection required to integrate the subwoofer correctly with other KEF outdoor speakers.\u003c\/p\u003e\n\u003cp\u003eProfessional system configuration is recommended to ensure the amplifier and DSP settings are appropriate for the installation.\u003c\/p\u003e\n\u003ch2\u003eIPX5-Rated Weather Resistance\u003c\/h2\u003e\n\u003cp\u003eThe KEF BL12b carries an \u003cstrong\u003eIPX5 rating\u003c\/strong\u003e, providing resistance against water jets from any direction.\u003c\/p\u003e\n\u003cp\u003eIts rugged, weather-sealed construction protects the driver and internal components against rain, moisture and typical outdoor exposure.\u003c\/p\u003e\n\u003cp\u003eIPX5 does not make the subwoofer suitable for immersion. It should be installed with appropriate drainage and must not be placed where water can accumulate around the enclosure.\u003c\/p\u003e\n\u003ch2\u003eUV-Resistant Outdoor Construction\u003c\/h2\u003e\n\u003cp\u003eUV-resistant exterior materials help protect the BL12b against deterioration caused by prolonged sunlight exposure.\u003c\/p\u003e\n\u003cp\u003eThe subwoofer is engineered to operate across temperatures from \u003cstrong\u003e−25°C to +70°C\u003c\/strong\u003e, supporting reliable performance through changing seasonal conditions.\u003c\/p\u003e\n\u003cp\u003eKEF has also subjected the design to more than \u003cstrong\u003e500 hours of salt-spray testing\u003c\/strong\u003e, making it suitable for coastal environments when properly installed and maintained.\u003c\/p\u003e\n\u003ch2\u003eDurable Aluminium Grille\u003c\/h2\u003e\n\u003cp\u003eA one-piece aluminium grille protects the upper acoustic section of the BL12b while maintaining a refined appearance.\u003c\/p\u003e\n\u003cp\u003eThe grille surrounds most of the exposed driver area, helping bass disperse evenly across the landscape. Its understated design allows the subwoofer to integrate into gardens and architecturally designed outdoor areas without becoming a dominant visual feature.\u003c\/p\u003e\n\u003ch2\u003eFlexible Outdoor Installation\u003c\/h2\u003e\n\u003cp\u003eSeveral mounting options allow the BL12b to be adapted to different landscapes and structural surfaces.\u003c\/p\u003e\n\u003cp\u003eInstallation options include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGround-stake mounting in garden beds\u003c\/li\u003e\n\u003cli\u003eHard-surface installation on patios or concrete\u003c\/li\u003e\n\u003cli\u003ePartially buried installation\u003c\/li\u003e\n\u003cli\u003ePlacement beneath timber decking\u003c\/li\u003e\n\u003cli\u003eCompatible wood-deck mounting accessories\u003c\/li\u003e\n\u003cli\u003eDirect attachment beneath compatible KEF bollard speakers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen fitted with the ground stake, the BL12b stands \u003cstrong\u003e1100mm high\u003c\/strong\u003e. Partial burial can conceal much of the enclosure while leaving the required acoustic section exposed.\u003c\/p\u003e\n\u003ch2\u003eIntegrates with KEF Outdoor Bollard Speakers\u003c\/h2\u003e\n\u003cp\u003eCompatible KEF bollard speakers can be mounted directly above the BL12b.\u003c\/p\u003e\n\u003cp\u003eThis arrangement combines full-range sound and powerful bass in a unified installation while positioning the main speaker at an effective listening height.\u003c\/p\u003e\n\u003cp\u003eIt also reduces the need for separate mounting locations, helping create a cleaner and more cohesive outdoor audio system.\u003c\/p\u003e\n\u003ch2\u003eMix, Match and Expand\u003c\/h2\u003e\n\u003cp\u003eThe BL12b forms part of KEF’s scalable outdoor speaker range.\u003c\/p\u003e\n\u003cp\u003eIt can be combined with KEF bollard speakers and landscape satellite speakers to suit the property’s size, listening zones and required output. This flexibility supports installations ranging from a single large outdoor entertainment area to extensive multi-zone landscape audio.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-output outdoor bollard subwoofer\u003c\/li\u003e\n\u003cli\u003e300mm or 12-inch long-throw bass driver\u003c\/li\u003e\n\u003cli\u003eFrequency response of 24Hz–300Hz at ±6dB\u003c\/li\u003e\n\u003cli\u003eFrequency range of 21Hz–330Hz at −10dB\u003c\/li\u003e\n\u003cli\u003eFull 360-degree nominal coverage\u003c\/li\u003e\n\u003cli\u003eNominal coverage area of 200m²\u003c\/li\u003e\n\u003cli\u003eMaximum output of 115dB\u003c\/li\u003e\n\u003cli\u003eFour-ohm nominal impedance\u003c\/li\u003e\n\u003cli\u003eRecommended amplifier power of 400W\u003c\/li\u003e\n\u003cli\u003eDesigned for KEF Network DSP Amplifiers\u003c\/li\u003e\n\u003cli\u003eRecommended 170Hz low-pass filter\u003c\/li\u003e\n\u003cli\u003eIPX5-rated weather resistance\u003c\/li\u003e\n\u003cli\u003eUV-resistant exterior construction\u003c\/li\u003e\n\u003cli\u003eMore than 500 hours of salt-spray testing\u003c\/li\u003e\n\u003cli\u003eOperating range from −25°C to +70°C\u003c\/li\u003e\n\u003cli\u003eGround-stake and hard-surface installation\u003c\/li\u003e\n\u003cli\u003eSuitable for partially buried applications\u003c\/li\u003e\n\u003cli\u003eCompatible with KEF outdoor bollard speakers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRecommended Applications\u003c\/h2\u003e\n\u003cp\u003eThe KEF BL12b is suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge residential gardens\u003c\/li\u003e\n\u003cli\u003ePoolside entertainment areas\u003c\/li\u003e\n\u003cli\u003eExpansive patios and courtyards\u003c\/li\u003e\n\u003cli\u003eLuxury landscape audio systems\u003c\/li\u003e\n\u003cli\u003eOutdoor kitchens and entertaining zones\u003c\/li\u003e\n\u003cli\u003eHotels and resorts\u003c\/li\u003e\n\u003cli\u003eHospitality venues\u003c\/li\u003e\n\u003cli\u003ePadel and recreation courts\u003c\/li\u003e\n\u003cli\u003eOutdoor cinema systems\u003c\/li\u003e\n\u003cli\u003eMulti-zone commercial installations\u003c\/li\u003e\n\u003cli\u003eCoastal properties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKEF BL12b Specifications\u003c\/h2\u003e\n\u003cdiv class=\"group TyagGW_tableContainer TyagGW_tableContainerWithTableOfContents\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eKEF BL12b\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eBollard Subwoofers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal impedance\u003c\/td\u003e\n\u003ctd\u003e4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e88dB (2.83V\/1m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e24Hz–300Hz (±6dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency range\u003c\/td\u003e\n\u003ctd\u003e21Hz–330Hz (−10dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal coverage\u003c\/td\u003e\n\u003ctd\u003e360°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal coverage area\u003c\/td\u003e\n\u003ctd\u003e200m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum SPL\u003c\/td\u003e\n\u003ctd\u003e115dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver\u003c\/td\u003e\n\u003ctd\u003e300mm (12-inch) low-frequency driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired amplifier\u003c\/td\u003e\n\u003ctd\u003eKEF Network DSP Amplifiers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended amplifier power\u003c\/td\u003e\n\u003ctd\u003e400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended low-pass filter\u003c\/td\u003e\n\u003ctd\u003e170Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions without mount\u003c\/td\u003e\n\u003ctd\u003e816 × 362 × 362mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions with hardscape mount\u003c\/td\u003e\n\u003ctd\u003e826 × 362 × 362mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions with ground stake\u003c\/td\u003e\n\u003ctd\u003e1100 × 362 × 362mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e19kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e−25°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeather-resistance rating\u003c\/td\u003e\n\u003ctd\u003eIPX5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KEF","offers":[{"title":"Default Title","offer_id":50265053298945,"sku":"SP4117B0AA","price":3140.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1133\/9398\/files\/KEF-BL12b-Outdoor-Subwoofer-australia.jpg?v=1788334649","url":"https:\/\/sydneyhifimonavale.com.au\/products\/kef-bl12b-outdoor-bollard-subwoofer","provider":"Sydney Hi-Fi Mona Vale","version":"1.0","type":"link"}