{"product_id":"fbt-install-keiron-4c-b-black-422570","title":"Keiron 4C B Black","description":"\u003ch3\u003eThe Keiron Series: A Compact and Demanding \"Install\" Approach\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eFBT Install Keiron 4C B\u003c\/strong\u003e is part of the Keiron series, a range focused on \u003cstrong\u003einstallation\u003c\/strong\u003e where priority is given to integration, consistent performance, and ease of implementation. With its cubic format and \u003cstrong\u003eblack finish\u003c\/strong\u003e, it naturally blends into environments such as retail stores, cultural spaces, hotels, meeting rooms, or places of worship, while maintaining a precise sonic signature. Its \u003cstrong\u003eMade in Italy\u003c\/strong\u003e design and plywood enclosure reinforce this concept: a compact speaker designed as a true professional audio tool.\u003c\/p\u003e\u003ch3\u003eIdeal Applications for the Keiron 4C B\u003c\/h3\u003e\u003cp\u003eThis passive speaker is particularly suited for projects requiring \u003cstrong\u003eclose-range sound diffusion\u003c\/strong\u003e and clean output at controlled levels: background music, zone reinforcement, small rooms, corridors, reception areas, or voice diffusion for announcements and conferences. Thanks to its \u003cstrong\u003e91 dB sensitivity (1W\/1m)\u003c\/strong\u003e and calibrated power, it easily fits into distributed systems. Its \u003cstrong\u003e90 degrees H x 90 degrees V dispersion\u003c\/strong\u003e facilitates placement to cover an area evenly without pronounced hot spots.\u003c\/p\u003e\u003ch3\u003eDesign and Performance: The Efficiency of a 2-Way Coaxial\u003c\/h3\u003e\u003ch4\u003eCoaxial Architecture: Coherence and Space Saving\u003c\/h4\u003e\u003cp\u003eThe Keiron 4C B features a \u003cstrong\u003e2-way coaxial configuration\u003c\/strong\u003e, with a \u003cstrong\u003e4-inch (101.6 mm)\u003c\/strong\u003e driver and a \u003cstrong\u003e1-inch (25.4 mm)\u003c\/strong\u003e tweeter. The advantage of coaxial design in installations is twofold: on one hand, a \u003cstrong\u003emore point-source-like origin\u003c\/strong\u003e that helps maintain good coherence between midrange and highs\u0026#59; on the other hand, a very compact overall format, practical when the speaker must remain visually discreet.\u003c\/p\u003e\u003ch4\u003eLow-Frequency Management in Installation: High-Pass Filter Recommended\u003c\/h4\u003e\u003cp\u003eWith a \u003cstrong\u003efrequency response from 100 Hz to 20 kHz\u003c\/strong\u003e, this speaker is optimized for clarity and intelligibility while remaining realistic on bass considering its size. To protect the driver excursion and improve level handling, a \u003cstrong\u003ehigh-pass filter at 90 Hz - 24 dB\/oct\u003c\/strong\u003e is recommended. The manufacturer also suggests using an \u003cstrong\u003eexternal recommended filter: digital management with preset\u003c\/strong\u003e, a typical approach in refined installations where equalization and protection are centralized.\u003c\/p\u003e\u003ch4\u003ePower and Amplification: Simple Sizing\u003c\/h4\u003e\u003cp\u003eThe Keiron 4C B is rated at \u003cstrong\u003e50 W RMS\u003c\/strong\u003e and \u003cstrong\u003e200 W Peak\u003c\/strong\u003e, with a \u003cstrong\u003erecommended amplifier of 100 W RMS\u003c\/strong\u003e. This allows maintaining dynamic headroom while ensuring stable operation, especially in multi-zone distributed systems. Its \u003cstrong\u003emax peak SPL of 114 dB\u003c\/strong\u003e aligns with its purpose: delivering comfortable and clean levels for small to medium-sized spaces or as supplementary diffusion.\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:13;--wb-lb:transparent;--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eFBT\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eDriver\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e4-inch diameter (101.6 mm), voice coil diameter 1.5 inches (38.1 mm)\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:2;--wb-r:14;--wb-lb:var(--wb-neutral-50);--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eInstall Keiron 4C B\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eTweeter\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e1-inch diameter (25.4 mm), voice coil diameter 1 inch (25.4 mm)\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:3;--wb-r:15;--wb-lb:transparent;--wb-rb:transparent\"\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 speaker\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eDispersion\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e90 degrees H x 90 degrees V\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:4;--wb-r:16;--wb-lb:var(--wb-neutral-50);--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eManufacturer Reference\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e45382\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eFrequency response\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e100 Hz to 20 kHz\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:5;--wb-r:17;--wb-lb:transparent;--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)\"\u003eKeiron\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e91 dB (1W\/1m)\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:6;--wb-r:18;--wb-lb:var(--wb-neutral-50);--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\u003eMax peak SPL\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e114 dB\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:7;--wb-r:19;--wb-lb:transparent;--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\u003eCrossover frequency\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e3 kHz\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:8;--wb-r:20;--wb-lb:var(--wb-neutral-50);--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e2-way coaxial\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)\"\u003e90 Hz - 24 dB\/oct\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:9;--wb-r:21;--wb-lb:transparent;--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eRecommended amplifier\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e100 W RMS\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)\"\u003eDigital management with preset\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:10;--wb-r:22;--wb-lb:var(--wb-neutral-50);--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eRMS power\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e50 W\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eInput connectors\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eEuroblock in \u0026amp; through\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:11;--wb-r:23;--wb-lb:transparent;--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003ePeak power\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e200 W\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eplywood\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:12;--wb-r:24;--wb-lb:var(--wb-neutral-50);--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eNominal impedance\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e16 ohms\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eadjustable bracket sold separately (WM-45)\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"FBT Install","offers":[{"title":"Default Title","offer_id":54360537465107,"sku":"422570","price":279.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0872\/6803\/files\/cf7014957165b1821898895000c072d7cfaf92d7_MSC_88978.jpg?v=1789399794","url":"https:\/\/woodbrass.shop\/products\/fbt-install-keiron-4c-b-black-422570","provider":"Woodbrass.com","version":"1.0","type":"link"}