{"product_id":"fbt-install-libra-8s-b-422496","title":"Libra 8S B","description":"\u003ch3\u003eThe Libra Series: An \"Installation\" Approach by FBT\u003c\/h3\u003e\u003cp\u003eWith the \u003cstrong\u003eFBT Install\u003c\/strong\u003e range, the \u003cstrong\u003eLibra\u003c\/strong\u003e series targets sound reinforcement designed for integration: controlled footprint, connectors suited for installations, and robust construction. The \u003cstrong\u003eLIBRA 8S Black\u003c\/strong\u003e fits this logic by offering a compact bass reinforcement intended to complement an installed system when seeking more foundation and listening comfort without resorting to bulky subwoofers.\u003c\/p\u003e\u003ch3\u003eIntended Uses and Users\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eFBT Install LIBRA 8S Black\u003c\/strong\u003e is aimed at integrators, installers, and operators of public venues who want to densify the low end for background music, more rhythmic playlists, or microphone playback, while maintaining a discreet footprint. Its \u003cstrong\u003eomnidirectional dispersion\u003c\/strong\u003e makes it a coherent choice whenever a homogeneous bass is desired in the listening area, with flexible placement options (depending on room configuration and cabling constraints).\u003c\/p\u003e\u003cp\u003ePractically, this subwoofer is suitable for spaces prioritizing clean and clear bass rather than extreme sub-bass: \u003cstrong\u003eretail stores\u003c\/strong\u003e, \u003cstrong\u003ehotels\u003c\/strong\u003e, \u003cstrong\u003erestaurants\u003c\/strong\u003e, \u003cstrong\u003ebars\u003c\/strong\u003e, \u003cstrong\u003emeeting rooms\u003c\/strong\u003e, \u003cstrong\u003esmall multipurpose rooms\u003c\/strong\u003e, or reception areas. Thanks to its size, it can be easily positioned within existing layouts while providing noticeable reinforcement between 42 Hz and 300 Hz.\u003c\/p\u003e\u003ch3\u003eDesign, Performance, and Implementation Recommendations\u003c\/h3\u003e\u003ch4\u003eA Passive Subwoofer to Integrate into an Amplified Chain\u003c\/h4\u003e\u003cp\u003eThe LIBRA 8S Black is a \u003cstrong\u003epassive subwoofer\u003c\/strong\u003e : it requires an external amplifier, with a \u003cstrong\u003erecommended amplifier power of 300 W rms\u003c\/strong\u003e. Its \u003cstrong\u003enominal impedance of 8 ohms\u003c\/strong\u003e facilitates integration into many amplification configurations intended for installations. In terms of level, it offers a \u003cstrong\u003esensitivity of 89 dB\u003c\/strong\u003e, a \u003cstrong\u003econtinuous max SPL of 114 dB\u003c\/strong\u003e, and a \u003cstrong\u003epeak max SPL of 117 dB\u003c\/strong\u003e, values consistent with an 8-inch format designed for integration.\u003c\/p\u003e\u003ch4\u003e8-Inch Driver and Bass-Dedicated Useful Range\u003c\/h4\u003e\u003cp\u003eThe cabinet is equipped with an \u003cstrong\u003e8-inch (203 mm) driver\u003c\/strong\u003e featuring a \u003cstrong\u003e1.5-inch (38 mm) voice coil\u003c\/strong\u003e. Its \u003cstrong\u003efrequency response from 42 Hz to 300 Hz\u003c\/strong\u003e supports the rhythmic foundation and relieves the main speakers from the most demanding frequencies. The result: often cleaner sound, better level handling at equivalent power, and a heightened sense of dynamics, particularly appreciated in installed systems.\u003c\/p\u003e\u003ch4\u003eRecommended Filtering: A Solid Basis to Protect and Optimize\u003c\/h4\u003e\u003cp\u003eFBT recommends a \u003cstrong\u003ehigh-pass filter at 38 Hz\u003c\/strong\u003e with a slope of \u003cstrong\u003e24 dB per octave\u003c\/strong\u003e. This approach aims to limit unnecessary energy below the operating range, protect the transducer, and stabilize the cabinet's behavior in reverberant rooms or environments where high levels are pushed. An \u003cstrong\u003eexternal filter\u003c\/strong\u003e is also recommended, with a dedicated \u003cstrong\u003eDSP processor\u003c\/strong\u003e to adjust filtering, equalization, and level according to the venue and the rest of the system.\u003c\/p\u003e\u003ch4\u003eInstallation Connectors and Robust Enclosure\u003c\/h4\u003e\u003cp\u003eFor clean integration, the LIBRA 8S Black features an input and link output via \u003cstrong\u003eEuroblock\u003c\/strong\u003e connectors. Its enclosure, made of \u003cstrong\u003eBaltic birch plywood\u003c\/strong\u003e, is designed for rigidity and durability, and the \u003cstrong\u003eblack finish\u003c\/strong\u003e facilitates discreet installation. A \u003cstrong\u003esuspension kit is included\u003c\/strong\u003e, opening mounting possibilities according to project constraints.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cstyle\u003e@media(max-width:632px){table[data-wb-spec]{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}table[data-wb-spec] colgroup{display:none}table[data-wb-spec] tbody,table[data-wb-spec] tr{display:contents}table[data-wb-spec] td{display:block;overflow-wrap:anywhere;grid-row:var(--wb-l);background-color:var(--wb-lb)}table[data-wb-spec] td[data-r]{grid-row:var(--wb-r);background-color:var(--wb-rb)}table[data-wb-spec] td[colspan=\"2\"]{grid-column:1\/-1}table[data-wb-spec] td:empty{display:none}}\u003c\/style\u003e\n\u003ctable data-wb-spec style=\"width:100%;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003c\/colgroup\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:1;--wb-r:2;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eBluetooth\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eNo\u003c\/td\u003e\u003ctd data-r colspan=\"2\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ctable data-wb-spec style=\"width:100%;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003c\/colgroup\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:1;--wb-r:12;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003epassive subwoofer\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eNominal impedance\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e8 ohms\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:2;--wb-r:13;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eLibra (FBT Install)\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003ePower handling\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e150 W\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:3;--wb-r:14;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eManufacturing\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eItaly\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003ePower handling (IEC 268-5)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e600 W\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:4;--wb-r:15;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eblack\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eRecommended amplifier power\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e300 W rms\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:5;--wb-r:16;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eFrequency response\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e42 Hz - 300 Hz\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eRecommended high-pass filter\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e38 Hz - 24 dB per octave\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:6;--wb-r:17;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eDispersion (HxV)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eomnidirectional\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eRecommended external filter\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eFBT DSP Processor\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:7;--wb-r:18;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e89 dB\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eEuroblock\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:8;--wb-r:19;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eMax continuous SPL\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e114 dB\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eLink output\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eEuroblock\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:9;--wb-r:20;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eMax peak SPL\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e117 dB\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eEnclosure material\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eBaltic birch plywood\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:10;--wb-r:21;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eDriver size\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e8 inches (203 mm)\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e326 x 275 mm\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:11;--wb-r:22;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eVoice coil\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e1.5 inches (38 mm)\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e6.1 kg\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"FBT Install","offers":[{"title":"Default Title","offer_id":54358188622099,"sku":"422496","price":579.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0872\/6803\/files\/2753028cc17c879bc285a33bc80d0eb1607b4116_MSC_89022.jpg?v=1792552117","url":"https:\/\/woodbrass.shop\/products\/fbt-install-libra-8s-b-422496","provider":"Woodbrass.com","version":"1.0","type":"link"}