{"product_id":"fbt-install-keiron-4c-b-black-422570","title":"Keiron 4C B Preto","description":"\u003ch3\u003eA série Keiron: uma abordagem \"install\" compacta e exigente\u003c\/h3\u003e\u003cp\u003eA \u003cstrong\u003eFBT Install Keiron 4C B\u003c\/strong\u003e integra a série Keiron, uma gama orientada para \u003cstrong\u003einstalação\u003c\/strong\u003e onde a prioridade é dada à integração, à constância de desempenho e à simplicidade de implementação. Com seu formato cúbico e seu \u003cstrong\u003ecolor preto\u003c\/strong\u003e, ela se integra naturalmente em ambientes como comércios, espaços culturais, hotéis, salas de reunião ou locais de culto, mantendo uma assinatura sonora precisa. Sua concepção \u003cstrong\u003eFabricada na Itália\u003c\/strong\u003e e sua caixa em contraplacado reforçam essa lógica: uma caixa compacta, mas pensada como uma verdadeira ferramenta de áudio profissional.\u003c\/p\u003e\u003ch3\u003ePara quais utilizações a Keiron 4C B é ideal?\u003c\/h3\u003e\u003cp\u003eEsta caixa passiva é particularmente adequada para projetos que exigem uma \u003cstrong\u003edifusão de proximidade\u003c\/strong\u003e e um som limpo em níveis controlados: ambientação sonora, reforço de zonas, salas pequenas, corredores, recepção, ou ainda difusão de voz para anúncios e conferências. Graças à sua \u003cstrong\u003esensibilidade de 91 dB (1W\/1m)\u003c\/strong\u003e e sua potência calibrada, ela se encaixa facilmente em sistemas distribuídos. Sua \u003cstrong\u003edispersão de 90 graus H x 90 graus V\u003c\/strong\u003e facilita o posicionamento para cobrir uma área de forma regular, sem pontos quentes marcados.\u003c\/p\u003e\u003ch3\u003eConcepção e desempenho: a eficiência de uma coaxial de 2 vias\u003c\/h3\u003e\u003ch4\u003eArquitetura coaxial: coerência e ganho de espaço\u003c\/h4\u003e\u003cp\u003eA Keiron 4C B adota uma \u003cstrong\u003econfiguração coaxial de 2 vias\u003c\/strong\u003e, com um alto-falante de \u003cstrong\u003e4 polegadas (101,6 mm)\u003c\/strong\u003e e um tweeter de \u003cstrong\u003e1 polegada (25,4 mm)\u003c\/strong\u003e. O interesse do coaxial, em instalação, é duplo: de um lado uma \u003cstrong\u003efonte mais pontual\u003c\/strong\u003e que ajuda a manter uma boa coerência entre médios e agudos, do outro um formato global muito compacto, prático quando a caixa deve permanecer visualmente discreta.\u003c\/p\u003e\u003ch4\u003eGestão dos graves em instalação: filtro passa-alto recomendado\u003c\/h4\u003e\u003cp\u003eCom uma \u003cstrong\u003eresposta em frequência de 100 Hz a 20 kHz\u003c\/strong\u003e, esta caixa é otimizada para clareza e inteligibilidade, permanecendo realista nos graves considerando seu tamanho. Para proteger a excursão do alto-falante e melhorar a estabilidade do nível, um \u003cstrong\u003efiltro passa-alto é recomendado a 90 Hz - 24 dB\/oitava\u003c\/strong\u003e. O fabricante também indica o uso de um \u003cstrong\u003efiltro externo recomendado: digital management with preset\u003c\/strong\u003e, uma abordagem típica de instalações cuidadas onde a equalização e a proteção são centralizadas.\u003c\/p\u003e\u003ch4\u003ePotência e amplificação: dimensionar simplesmente\u003c\/h4\u003e\u003cp\u003eA Keiron 4C B anuncia \u003cstrong\u003e50 W RMS\u003c\/strong\u003e e \u003cstrong\u003e200 W Peak\u003c\/strong\u003e, com um \u003cstrong\u003eamplificador recomendado de 100 W RMS\u003c\/strong\u003e. Isso permite manter uma reserva dinâmica ao mesmo tempo que garante um funcionamento estável, especialmente em sistemas distribuídos por várias zonas. Seu \u003cstrong\u003eSPL máximo de pico de 114 dB\u003c\/strong\u003e permanece coerente com sua vocação: fornecer um nível confortável e limpo para espaços de pequeno a médio porte, ou como complemento de difusão.\u003c\/p\u003e\n\n\u003ch2\u003eEspecificações técnicas\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)\"\u003eNão\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\u003eMarca\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\u003eAlto-falante\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003ediâmetro 4 polegadas (101,6 mm), bobina de voz diâmetro 1,5 polegadas (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\u003eModelo\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)\"\u003ediâmetro 1 polegada (25,4 mm), bobina de voz diâmetro 1 polegada (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\u003eTipo\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eCaixa passiva\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eDispersão\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e90 graus H x 90 graus 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\u003eRef. Fabricante\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\u003eResposta em frequência\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e100 Hz a 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\u003eSérie\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\u003eSensibilidade\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\u003eFabricação\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eItália\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eSPL máximo de pico\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\u003eCor\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003ePreto\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eFrequência de corte\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\u003eConfiguração\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e2 vias coaxial\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eFiltro passa-alto recomendado\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e90 Hz - 24 dB\/oitava\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\u003eAmplificador recomendado\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\u003eFiltro externo recomendado\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\u003ePotência RMS\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\u003eConector de entrada\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\u003ePotência Peak\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\u003eCaixa\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003econtraplacado\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\u003eImpedância nominal\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\u003eInstalação\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003esuporte ajustável vendido separadamente (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=1792619891","url":"https:\/\/woodbrass.pt\/products\/fbt-install-keiron-4c-b-preto-422570","provider":"Woodbrass.com","version":"1.0","type":"link"}