Hablamos hoy de una leyenda entre los amplificadores: El Dual Rectifier, llamado Recto, aquí en una nueva versión, el Solo Head. Comparado con la versión clásica, el nuevo Dual Rectifier se equipa de algunas nuevas funciones: El Multi-Watt, un nuevo lazo de efectos, 8 modos para los tres canales y una nueva pedalera. Este nuevo Dual Rectifier es un paraíso para quién ama las válvulas: 4x6L6 (o 4xEL-34), 5x12AX7 y 2x5U4. Como he dicho, el Dual Rectifier se equipa de tres canales. Además hay ocho diversos modos. Dos modos en el canal 1, y tres modos en los canales 2 y 3. Veamos características de este nuevo Recto, el Dual Rectifier Solo Head.
Canal 1
El canal 1 permite dos modos: Clean y Pushed.
Clean
El modo con el ajuste más bajo del gain. Obviamente, este modo es perfecto para los sonidos limpios, pero no sólo. Si está utilizado con los valores de preset, este modo proporciona un sonido limpio excelente, equilibrado y cristalino. Mucho abierto y con una atmósfera caliente mucho hermosa. Si aumenta el gain, la cabezal producirá un sonido perfecto para los solos, con un sustain notable y un gran ataque. Un sonido algo Vintage, especialmente con la pastilla mástil.
Pushed
En este modo el Recto agrega una cantidad increíble de gain, en las primeras etapas del previo, al canal 1. El resultado es un gran crunch, mucho duro y con un ataque rápido, pero con una salida muy limpia. Este sonido, un Overdrive, es perfecto para los solos.
Canales 2 y 3
Cada uno de los otros dos canales Lead del Dual Rectifier Solo Head proporciona tres modos: Raw, Vintage High Gain y Modern High Gain.
Raw
Este modo, entre los tres modos de los dos canales Lead, es el modo con el valor más bajo del gain. Este ajuste proporciona un sonido versátil. Puede ser utilizado como una alternativa al sonido limpio del canal 1 o, si quiere, para un sonido Blues con un valor bajo del gain. Pero este modo puede ser extremadamente flexible. Por ejemplo, si aumenta los agudos puede producir un timbre válido para un sonido rítmico con un crunch muy agradable.
Vintage High Gain
Este modo produce un sonido gordo, cremoso que sea distintivo del Rectifier. Este sonido se puede considerar, en los valores más bajos, una alternativa del Raw, cuando el Raw se regula en el máximo. El Vintage High Gain crea una compresión natural típica de un amplificador totalmene a válvulas. Un sonido muy saturado.
Modern High Gain
Si el Hard Core o el Heavy Metal es su música, éste es el modo para usted. El Modern High Gain produce un sonido muy agresivo, con una respuesta rápida y un ataque duro. Con este modo, si sus oídos pueden tolerar un volumen monstruoso, puede exagerar con el gain.
El Multi-Watt
El Multi-Watt es una función que permite la opción entre una potencia de salida de 50 o 100 vatios. Pero esta función de Mesa/Boogie no es simplemente un interruptor para la potencia de salida. Modifica el funcionamiento de las válvulas y crea un diverso sonido, no sólo un sonido con un valor más alto de la salida.
Controles
El panel frontal del Dual Rectifier Solo Head se equipa de una gran cantidad de controles. Puede elegir el modo más conveniente para su gusto. Sucesivamente puede regular y personalizar el sonido con una gran flexibilidad.
Ejemplos para las ecualizaciones
El manual del Dual Rectifier Solo Head presenta muchos ejemplos para los ajustes y muchas informaciones detalladas de todos los controles de esta cabezal de Mesa/Boogie. Si compra este amplificador, la lectura del manual puede ser muy instructiva.
Dual Rectifier (de wikipedia)
The Solo, with its visceral aesthetic and aggressive gain structure, soon became the most popular model of the Dual Rectifier series. The cascading gain preamp circuit is largely borrowed from high-gain amplifier designer Mike Soldano and his Super Lead Overdrive 100 amplifier(SLO 100). Equipped with five 12AX7 preamp tubes and a quartet of 6L6 power tubes, the Solo produces 70-100 watts, depending on power options chosen. A bias select switch is standard, allowing the user to switch between EL34 and 6L6 power tubes without re-biasing. Originally designed with two channels (though not true parallel channel circuits) the amp later evolved to three channels.The earliest Dual Rectifier was a heavily modified Mark IV, or at least, was fitted in a Mark IV chassis during the prototype stage. This was one of what became known as the elusive Revision A/B amplifiers. These would only see limited production as prototypes, and were never sold to the public.
Revision C was the first to be sold. It featured two independent channels: Orange, or "Vintage," and Red, or "Modern." If the player so desired, the Orange channel could be switched via rear panel rocker to a clean channel, and the Red channel could be switched in much the same manner to "Vintage." Later revisions were produced up to Rev F, which is considered the last of the coveted "Pre-500" Dual Rectifiers, referring to their serial number being in or below the 500's. After that, many players argue that Revision G lost a certain character that the others had. Some believe it was because Mesa had switched transformer suppliers, but that theory has been debunked since some Rev G amplifiers were still equipped with the older transformers, made by Schumacher Electric.
After Revision G went out of production, the Dual Rectifier received a third dedicated clean channel, in addition to the Orange and Red channels. Later revisions added voicing switches, and minor circuit tweaks until the 3-channel went out of production in 2010.
In 2010, after the 3-channel was phased out, production began on the "Reborn" Dual Rectifier. This new revision attempted to capture the tone of the legendary Pre-500 amplifiers, while making the Orange and Red channels duplicates of each other for improved flexibility. The clean channel was re-worked to be more responsive and have a wider range of gain saturation in both voicings. Multi-Watt capabilities were added per channel, which offered switching between 100 or 50 watts and 4 or 2 power tubes respectively. Recto-Tracking per channel was also introduced, much like the implementation on the Road King, or Roadster. An improved footswitch was also implemented, along with an integrated mute function.
Tipos de Valvlulas
Kit de Retube completo
http://www.mesaboogie.com/Product_Info/TubeReference/TubeSalesReferenceGuide-11-10-08.pdf
Foro discusion acerca de cuales valvulas son mejores para potencia
http://www.harmonycentral.com/t5/Amps/Mesa-Boogie-Dual-Rectifier-6L6-s-or-EL34-s/td-p/1878336
The MESA EL-34 STR-447 is Mesa's very best overall EL-34 - It is a premium grade, NOS (New Old Stock) equivalent and their tube of choice in the production of all new Mesa EL-34 powered models - It has a traditional EL-34 tone & feel that is very urgent and aggressive and is an excellent choice for all styles of gain, especially classic rock, alternative rock & metal - This tube is true to the crown with focused low end, crushing mid range crunch and crystal-like highs - This is one of their favorites for authentic British tone - Excellent structural quality provides exceptional consistency and reliability.
rectificadoras
*Short Version - 3 3/4" from bottom of base to top of glass.*
The MESA 5U4GB rectifier tube is Mesa's very best overall 5U4 and their tube of choice in the production of all new Mesa amps featuring this tube - Based upon classic 1950's technology, the 5U4GB is a vastly improved 5U4 design that is extremely reliable and consistent, as well as much more compact - It is basically the size of a 6L6 power tube, so please take special care to install them in the correct tube position(s), especially when replacing 6L6's at the same time - This tube produces a "traditional vintage sag" with the most elastic and compressed feel of the two 5U4's that we offer - Amazing feel and exceptional overall quality make this our factory favorite
Tipos de fusible
fusible 250V 4 A - lento entorchado. primero de la izquierda
Manuales
- http://www.mesaboogie.com/manuals/3chRecto.pdf
- http://www.mesaboogie.com/manuals/3chRecto_multiWatt.pdf
