{"id":46995,"date":"2026-10-19T18:13:38","date_gmt":"2026-10-19T21:13:38","guid":{"rendered":"https:\/\/hificlub.com.br\/loja\/?post_type=product&#038;p=46995"},"modified":"2026-10-19T18:13:38","modified_gmt":"2026-10-19T21:13:38","slug":"rotel-rb-1090-amplificador-de-potencia-estereo-380-watts-rms","status":"publish","type":"product","link":"https:\/\/hificlub.com.br\/loja\/produto\/rotel-rb-1090-amplificador-de-potencia-estereo-380-watts-rms\/","title":{"rendered":"ROTEL RB-1090 Amplificador de Pot\u00eancia Est\u00e9reo, 380 Watts RMS"},"content":{"rendered":"<div id=\"model-response-message-contentr_0c26bb661ce1eefd\" class=\"markdown markdown-main-panel md-content enable-luminous-fast-follows enable-updated-hr-color\" dir=\"ltr\" aria-live=\"off\">\n<p><span class=\"citation-224\">O <\/span><b data-path-to-node=\"0\" data-index-in-node=\"2\"><span class=\"citation-224\">Rotel RB-1090<\/span><\/b><span class=\"citation-224 citation-end-224\"> \u00e9 um amplificador de pot\u00eancia est\u00e9reo de refer\u00eancia audi\u00f3fila, considerado o \u00e1pice da engenharia anal\u00f3gica da Rotel e o modelo de topo absoluto da linha 10 Series.<\/span> Projetado sob a filosofia <i data-path-to-node=\"0\" data-index-in-node=\"206\">Balanced Design Concept<\/i> para atuar como par perfeito do pr\u00e9-amplificador Rotel RC-1090, este bloco de pot\u00eancia \u00e9 amplamente reconhecido por sua colossal capacidade de fornecimento de corrente cont\u00ednua, fator de amortecimento de n\u00edvel de controle absoluto e imunidade total a quedas severas de imped\u00e2ncia.<\/p>\n<p><b data-path-to-node=\"1\" data-index-in-node=\"0\">Topologia Dual Mono Real e Transformadores Toroidais G\u00eameos<\/b><\/p>\n<p>Internamente, o RB-1090 \u00e9 constru\u00eddo a partir de uma arquitetura estritamente <b data-path-to-node=\"2\" data-index-in-node=\"78\">dual mono<\/b>, operando como se fossem dois monoblocos independentes instalados dentro do mesmo gabinete. O est\u00e1gio de alimenta\u00e7\u00e3o \u00e9 ancorado por <b data-path-to-node=\"2\" data-index-in-node=\"220\">dois massivos transformadores toroidais customizados de 1,25 kVA cada<\/b> (totalizando uma capacidade instalada de 2,5 kVA), projetados e enrolados pela pr\u00f3pria Rotel. <span class=\"citation-223\">O banco capacitivo de filtragem emprega quatro capacitores de grau audi\u00f3filo de folha dividida (<\/span><i data-path-to-node=\"2\" data-index-in-node=\"480\"><span class=\"citation-223\">Slit-Foil<\/span><\/i><span class=\"citation-223 citation-end-223\">) com baix\u00edssima resist\u00eancia em s\u00e9rie equivalente (Low-ESR), somando uma reserva energ\u00e9tica superior a 130.000 uF.<\/span> Essa reserva massiva permite que o amplificador responda instantaneamente a transientes din\u00e2micos orquestrais e graves s\u00edsmicos sem qualquer compress\u00e3o de sinal ou afundamento de tens\u00e3o (<i data-path-to-node=\"2\" data-index-in-node=\"791\">voltage sag<\/i>).<\/p>\n<p><b data-path-to-node=\"3\" data-index-in-node=\"0\">Est\u00e1gio de Sa\u00edda com M\u00faltiplos Transistores Bipolares Casados<\/b><\/p>\n<p>O est\u00e1gio de amplifica\u00e7\u00e3o conta com uma configura\u00e7\u00e3o diferencial com m\u00faltiplos pares de transistores de pot\u00eancia bipolares de alta velocidade e alta corrente conectados em paralelo por canal. Esse arranjo distribui a dissipa\u00e7\u00e3o t\u00e9rmica uniformemente ao longo dos dissipadores de calor usinados em alum\u00ednio maci\u00e7o, mantendo os dispositivos na sua faixa ideal de linearidade el\u00e9trica. <span class=\"citation-222\">O amplificador entrega impressionantes <\/span><b data-path-to-node=\"4\" data-index-in-node=\"422\"><span class=\"citation-222\">380 Watts cont\u00ednuos por canal em 8 Ohms<\/span><\/b><span class=\"citation-222\"> e salta para <\/span><b data-path-to-node=\"4\" data-index-in-node=\"475\"><span class=\"citation-222\">700 Watts cont\u00ednuos por canal em 4 Ohms<\/span><\/b><span class=\"citation-222 citation-end-222\"> com ambas as vias acionadas simultaneamente de 20 Hz a 20 kHz, demonstrando uma linearidade pr\u00f3xima da fonte de tens\u00e3o ideal.<\/span><\/p>\n<p><b data-path-to-node=\"5\" data-index-in-node=\"0\"><span class=\"citation-221 citation-end-221\">Fator de Amortecimento Extremo e Controle de Graves<\/span><\/b><\/p>\n<p><span class=\"citation-220\">Um dos destaques de engenharia do RB-1090 \u00e9 o seu extraordin\u00e1rio <\/span><b data-path-to-node=\"6\" data-index-in-node=\"65\"><span class=\"citation-220\">fator de amortecimento de 1.000<\/span><\/b><span class=\"citation-220 citation-end-220\"> (medido de 20 Hz a 20 kHz em 8 Ohms).<\/span> Essa imped\u00e2ncia interna de sa\u00edda extremamente baixa confere ao amplificador uma capacidade cir\u00fargica de controlar o movimento dos cones de woofers de grande porte, eliminando resson\u00e2ncias parasitas e parando o transdutor exatamente no t\u00e9rmino do sinal musical. <span class=\"citation-219 citation-end-219\">O resultado auditivo traduz-se em graves r\u00e1pidos, profundos, articulados e isentos de emborrachamento ac\u00fastico, sendo capaz de conduzir com autoridade caixas ac\u00fasticas reconhecidamente complexas e de baix\u00edssima imped\u00e2ncia (como modelos eletrost\u00e1ticos, magnetost\u00e1ticos ou caixas din\u00e2micas de carga dif\u00edcil).<\/span><\/p>\n<p><b data-path-to-node=\"7\" data-index-in-node=\"0\"><span class=\"citation-218 citation-end-218\">Conectividade Balanceada, Bi-cablagem e Constru\u00e7\u00e3o Mec\u00e2nica Massiva<\/span><\/b><\/p>\n<p><span class=\"citation-217 citation-end-217\">Com uma massa f\u00edsica que atinge os 38 kg, o chassi do RB-1090 \u00e9 constru\u00eddo em a\u00e7o de bitola pesada com um painel frontal espesso em alum\u00ednio escovado, provido de al\u00e7as frontais de apoio estrutural integradas.<\/span> <span class=\"citation-216 citation-end-216\">O painel traseiro disponibiliza entradas est\u00e9reo balanceadas XLR e n\u00e3o balanceadas RCA com conectores usinados banhados a ouro.<\/span> <span class=\"citation-215\">Para os falantes, o amplificador oferece <\/span><b data-path-to-node=\"8\" data-index-in-node=\"378\"><span class=\"citation-215\">dois pares de terminais de alta press\u00e3o por canal<\/span><\/b><span class=\"citation-215\">, permitindo configura\u00e7\u00f5es puras de bicablagem (<\/span><i data-path-to-node=\"8\" data-index-in-node=\"475\"><span class=\"citation-215\">bi-wiring<\/span><\/i><span class=\"citation-215 citation-end-215\">) sem a necessidade de adaptadores.<\/span> <span class=\"citation-214\">O controle operacional conta com circuito de religamento remoto via gatilho de 12V (<\/span><i data-path-to-node=\"8\" data-index-in-node=\"604\"><span class=\"citation-214\">12V Trigger<\/span><\/i><span class=\"citation-214 citation-end-214\">) e prote\u00e7\u00f5es eletr\u00f4nicas independentes contra sobrecorrente, curto-circuito e eleva\u00e7\u00e3o t\u00e9rmica, operando fora do caminho de \u00e1udio para preservar a integridade s\u00f4nica.<\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>O Rotel RB-1090 \u00e9 um amplificador de pot\u00eancia est\u00e9reo de refer\u00eancia audi\u00f3fila, considerado o \u00e1pice da engenharia anal\u00f3gica da Rotel e o modelo de topo absoluto da linha 10 Series. Projetado sob a filosofia Balanced Design Concept para atuar como par perfeito do pr\u00e9-amplificador Rotel RC-1090, este bloco de pot\u00eancia \u00e9 amplamente reconhecido por sua [&hellip;]<\/p>\n","protected":false},"featured_media":46996,"template":"","meta":{"_acf_changed":false,"_members_access_role":[],"_members_access_error":""},"product_brand":[],"product_cat":[27,28,24],"product_tag":[],"class_list":["post-46995","product","type-product","status-publish","has-post-thumbnail","product_cat-amplificador","product_cat-estereo","product_cat-rotel","first","instock","sold-individually","shipping-taxable","purchasable","product-type-simple"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Automa\u00e7\u00e3o . \u00c1udio . 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