{"id":28261,"date":"2025-04-08T08:24:57","date_gmt":"2025-04-08T14:24:57","guid":{"rendered":"https:\/\/www.mexicanguitarplayers.com\/tienda\/sin categor\u00eda\/bocina-eighteen-sound-12-12nmb420-8\/"},"modified":"2026-03-19T19:15:11","modified_gmt":"2026-03-20T01:15:11","slug":"bocina-eighteen-sound-12-12nmb420-8","status":"publish","type":"product","link":"https:\/\/www.mexicanguitarplayers.com\/en\/tienda\/audio\/bafles-y-bocinas\/bocinas-y-componentes\/medios\/bocina-eighteen-sound-12-12nmb420-8\/","title":{"rendered":"BOCINA EIGHTEEN SOUND 12  12NMB420\/8"},"content":{"rendered":"<div style=\"text-align: justify\">\n<div>\n<h3>El perfecto control de tu sonido.<\/h3>\n<\/div>\n<div>El 12NMB420 es un transductor midbass de neodimio de 12\u201d pulgadas dise\u00f1ado para monitoreo profesional y refuerzo de sonido. Este es un sistema de accionamiento cuidadosamente dise\u00f1ado para asegurar una salida lineal de baja distorsi\u00f3n, capacidad de alta potencia y transferencia de calor eficiente. El bajo m\u00e1s extendido, la distorsi\u00f3n m\u00e1s baja y el mejor control se realizan generalmente en cajas ventiladas dise\u00f1adas adecuadamente. En tales dise\u00f1os, la ventilaci\u00f3n o puerto, en realidad proporciona la octava m\u00e1s baja de salida. La excursi\u00f3n de la bocina 12NMB420 a estas frecuencias se reduce mucho en comparaci\u00f3n con las cajas selladas, lo que reduce directamente la distorsi\u00f3n arm\u00f3nica y la posibilidad de que el altavoz toque fondo. Los tama\u00f1os t\u00edpicos de gabinetes con ventilaci\u00f3n var\u00edan desde 40 lt. Hasta con ajustes de 50 a 60 Hz. Se sugiere una ecualizaci\u00f3n de baja frecuencia para mejorar la salida de graves si el sistema funcionar\u00e1 sin subwoofer. La potencia recomendada del amplificador var\u00eda de 250 a 500 W. En la brecha y junto con SDR (Single Demodulating Ring) se obtiene un balance \u00f3ptimo para reproducir picos instant\u00e1neos en frecuencias rojas, reduciendo la distorsi\u00f3n de la intermodulaci\u00f3n. El conjunto del im\u00e1n de neodimio de la tipolog\u00eda del im\u00e1n externo garantiza una alta concentraci\u00f3n de flujo, una compresi\u00f3n de baja potencia y un excelente intercambio de calor. Esto permite altos niveles de fuerza y potencia. El papel de alta calidad es un dise\u00f1o de perfil liso y curvil\u00edneo que elimina las resonancias en modo campana dentro del rango de frecuencia deseado. Linealidad de acci\u00f3n del pist\u00f3n. Esto se realiza mediante una linealidad de acci\u00f3n del pist\u00f3n. 12NMB420 emplea una bobina m\u00f3vil  Interleaved Sandwich (ISV) de 64 mm, en la cual un embobinador de fibra de vidrio de alta resistencia conduce los devanados tanto en la superficie exterior como en la interna para lograr una bobina de masa balanceada, lo que resulta en un ensamble de motor extremadamente lineal con una tendencia reducida al comportamiento exc\u00e9ntrico cuando se conduce con fuerza.<\/div>\n<div>\n<h4>Quick look<\/h4>\n<\/div>\n<ul style=\"margin: 0px 0px 0px 25px\">\n<li style=\"list-style-type: circle;margin: 5px\">Di\u00e1metro nominal.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Nominal impedance.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Power.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Sensitivity.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Rango de frecuencia.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Compresi\u00f3n.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Frecuencia m\u00e1xima recomendada.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Volumen recomendado del gabinete.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Impedancia m\u00ednima.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Excursi\u00f3n m\u00e1xima pico a pico.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Di\u00e1metro de la bobina m\u00f3vil.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Material de la bobina m\u00f3vil.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Suspensi\u00f3n.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Cono.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">FS (Frecuencia de resonancia).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Resistencia DC.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">SD (Superficie efectiva).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">QMS (Factor de calidad mec\u00e1nica).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">QES (Factor de calidad el\u00e9ctrica).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">QTS (Factor de calidad total).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">VAS (Volumen de aire equivalente a CMS).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">MMS (Masa total del cono).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Factor BL <\/li>\n<li style=\"list-style-type: circle;margin: 5px\">XMAX (Desplazamiento m\u00e1ximo).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Inductancia de la bobina m\u00f3vil (Le @ 1kHz).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Referencia de eficiencia 1W\/1m (espacio medio).<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Di\u00e1metro total.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Numero de agujeros de montaje y tornillo.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Di\u00e1metro de los agujeros de montaje.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Di\u00e1metro del c\u00edrculo del perno.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Corte de montaje frontal del bafle.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Corte de montaje posterior del bafle.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Profundidad total.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Espesor de  brida y junta.<\/li>\n<li style=\"list-style-type: circle;margin: 5px\">Weight.<\/li>\n<\/ul>\n<div>\n<div style=\"font-weight: bold\">Di\u00e1metro nominal.<\/div>\n<div>\n<p>12\u201d pulgadas (300 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Nominal impedance.<\/div>\n<div>\n<p>8 ohms.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Power.<\/div>\n<div>\n<p>AES: 300 W. Programa: 450 W. Pico: 900 W.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Sensitivity.<\/div>\n<div>\n<p>100.5 dB.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Rango de frecuencia.<\/div>\n<div>\n<p>55 &#8211; 6,000 Hz.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Compresi\u00f3n.<\/div>\n<div>\n<p>A -10 dB: 0.9 dB. A -3 dB: 2.2 dB. A potencia total: 2. dB.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Frecuencia m\u00e1xima recomendada.<\/div>\n<div>\n<p>2,000 Hz.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Volumen recomendado del gabinete.<\/div>\n<div>\n<p>50 &#8211; 100 lt. (1.77 &#8211; 3.53 pies c\u00fabicos).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Impedancia m\u00ednima.<\/div>\n<div>\n<p>6.9 ohms a 25\u00b0C.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Excursi\u00f3n m\u00e1xima pico a pico.<\/div>\n<div>\n<p>0.87\u201d pulgadas (22 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Di\u00e1metro de la bobina m\u00f3vil.<\/div>\n<div>\n<p>2.5\u201d pulgadas (65 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Material de la bobina m\u00f3vil.<\/div>\n<div>\n<p>Aluminio.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Suspensi\u00f3n.<\/div>\n<div>\n<p>Triple rollo, poli algod\u00f3n.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Cono.<\/div>\n<div>\n<p>Curvil\u00edneo, papel.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">FS (Frecuencia de resonancia).<\/div>\n<div>\n<p>53 Hz.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Resistencia DC.<\/div>\n<div>\n<p>5.2 ohms.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">SD (Superficie efectiva).<\/div>\n<div>\n<p>0.053 sq.mt. (82.15 sq.in.).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">QMS (Factor de calidad mec\u00e1nica).<\/div>\n<div>\n<p>3.6.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">QES (Factor de calidad el\u00e9ctrica).<\/div>\n<div>\n<p>0.3.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">QTS (Factor de calidad total).<\/div>\n<div>\n<p>0.28<\/p>\n<\/div>\n<div style=\"font-weight: bold\">VAS (Volumen de aire equivalente a CMS).<\/div>\n<div>\n<p>105 lt. (3.71 pies c\u00fabicos).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">MMS (Masa total del cono).<\/div>\n<div>\n<p>33.5 gr.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Factor BL <\/div>\n<div>\n<p>13.9 Tm.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">XMAX (Desplazamiento m\u00e1ximo).<\/div>\n<div>\n<p>\u00b1 4 mm (\u00b10.16\u201d pulgadas).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Inductancia de la bobina m\u00f3vil (Le @ 1kHz).<\/div>\n<div>\n<p>0.2 mH.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Referencia de eficiencia 1W\/1m (espacio medio).<\/div>\n<div>\n<p>99 dB.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Di\u00e1metro total.<\/div>\n<div>\n<p>12.4\u201d pulgadas (315 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Numero de agujeros de montaje y tornillo.<\/div>\n<div>\n<p>8.<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Di\u00e1metro de los agujeros de montaje.<\/div>\n<div>\n<p>0.28\u201d pulgadas (7.15 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Di\u00e1metro del c\u00edrculo del perno.<\/div>\n<div>\n<p>11.65\u201d &#8211; 11.8\u201d pulgadas (296 &#8211; 300 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Corte de montaje frontal del bafle.<\/div>\n<div>\n<p>\u00d8 11.1\u201d pulgadas (282 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Corte de montaje posterior del bafle.<\/div>\n<div>\n<p>\u00d8 11.1\u201d pulgadas (282 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Profundidad total.<\/div>\n<div>\n<p>5\u201d pulgadas (127 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Espesor de  brida y junta.<\/div>\n<div>\n<p>0.45\u201d pulgadas (11.5 mm).<\/p>\n<\/div>\n<div style=\"font-weight: bold\">Weight.<\/div>\n<div>\n<p>2.8 kg.<\/p>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Bocina de 12\u201d pulgadas, im\u00e1n de neodimio, anillo demodulador (SDR) para una menor distorsi\u00f3n, anillo de cobre para menor distorsi\u00f3n de intermodulaci\u00f3n, conos y platos protegidos contra la intemperie para uso en exteriores, especialmente dise\u00f1ada para sistemas compactos de dos v\u00edas, impedancia: 8 ohms, potencia AES: 300 W, programa: 450 W, pico: 900 W, sensibilidad: 100.5 dB, rango de frecuencia: 55 &#8211; 6,000 Hz, bobina m\u00f3vil de aluminio de 2.5\u201d pulgadas (65 mm), peso: 2.8 kg.&hellip; <a class=\"kt-excerpt-readmore more-link\" href=\"https:\/\/www.mexicanguitarplayers.com\/en\/tienda\/audio\/bafles-y-bocinas\/bocinas-y-componentes\/medios\/bocina-eighteen-sound-12-12nmb420-8\/\">Read more<\/a><\/p>","protected":false},"featured_media":28255,"comment_status":"open","ping_status":"closed","template":"","meta":{"kt_blocks_editor_width":""},"pwb-brand":[533],"product_brand":[],"product_cat":[213,221,474,534],"product_tag":[],"class_list":{"0":"post-28261","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"pwb-brand-eighteen-sound","7":"product_cat-audio","8":"product_cat-bafles-y-bocinas","9":"product_cat-bocinas-y-componentes","10":"product_cat-medios","11":"product_shipping_class-0-5-kg","13":"first","14":"outofstock","15":"taxable","16":"shipping-taxable","17":"purchasable","18":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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