User manual MARSHALL AMPLIFIER 2061X

[. . . ] From the handwired tag-board circuit, to the custom-manufactured Dagnall output and mains transformers, I am extremely proud of the incredible accuracy and authenticity of this re-issue. I sincerely hope that this handwired piece of Marshall history will provide you with countless hours of playing pleasure. Yours Sincerely, As Jim has already pointed out, we went to incredible lengths to achieve maximum authenticity in terms of components, circuitry, constructional methods, materials, specifications, aesthetics, signal path, performance, tonal characteristics and feel. We are delighted to report that our suppliers were equally as exacting in their tasks ­ none more so than our long term partners Dagnall Transformers. [. . . ] Components: With the obvious exception of the valves, all components used were sourced from European and American manufacturers. Tag Board: This is exactly the same as the original in terms of surface dimension, thickness and custom-drilled component holes loaded with avlugs. The reason we didn't use a board with the exact same chemical composition as in the original units is because that material doesn't pass current safety legislation regarding flammability. 1 MAINS TRANSFORMER OUTPUT TRANSFORMER EL84 POWER VALVES ECC83 VALVES Front Panel: Gold, brushed anodised aluminium ­ exactly as the originals we used as references. Specific details pertaining to the front panel features of the 2061X can be found on page 4 of this manual. Note: While a few early 2061s boasted Plexiglas front panels, gold, brushed anodised aluminium panels were more commonplace on this model as we stopped using Plexiglas for front panels in mid 1969. Rear Panel: Again gold, brushed anodised aluminium ­ exactly as the originals we used as references. Specific details pertaining to the rear panel features of the 2061X can be found on page 5 of this manual. ENGLISH ENGLISH Cabinet Construction: High-grade, flawless (knot-free) Baltic birch ply with fingerlocked (a. k. a. The main cabinet frame (both sides, top and bottom) and the front baffle are constructed from 12mm ply while the back of the cabinet is 9mm ply. Cabinet Cosmetics: The black Levant, beading, piping and small 6" gold logo are exactly as the original. Rear Panel Improvements The features listed below are all `deviations' from the original that have been added for user-friendliness, practicality, added flexibility, and/or improved serviceability. Please note that none of these have any sonic impact (positive or negative) on the head what-so-ever! Impedance Switch: A feature that wasn't present on the original but, in conjunction with the two Speaker Output Jacks, obviously adds to the unit's flexibility when it comes to pairing it up with extension speaker cabinet options. H. T. and Mains Fuses: In the original these two fuses were located within the chassis itself, making it extremely time consuming and cumbersome to access should one blow. Making both fuses easily accessible via the rear panel is another obvious improvement we're sure you'll agree. For serviceability and sheer practicality, the mains chord on the re-issue is detachable. Transformers: By the time the 2061 was designed and manufactured, Jim had struck up his now wellknown relationship with transformer manufacturers, Dagnall and Drake. As a result, both the power and mains transformers used in the original 2061 were supplied by Dagnall. As you probably know, the output and mains transformers are vital components in an amplifier as they influence performance, sound and feel. Consequently, we worked extremely closely with our associates in Dagnall's R&D department in order to duplicate the original transformers in all areas in the re-issue units. To do this, we spent a great deal of time and attention studying and analysing the constructional methods and materials (e. g. : lamination grade, insulation, coil spacing, etc. ) used in both transformers so we could match everything as closely as possible, and also ensure that the all-important electrical characteristics and performance were identical. With Dagnall's expert help and dedication, we've done exactly that. Output Transformer: The original 2061 didn't have an impedance selector of any shape or form, instead the two speaker output jacks were hardwired directly to the 8 Ohm tap on the transformer ­ thus making it possible to use a single 8 Ohm cabinet or two 16 Ohm cabinets in parallel. To make the re-issue more user-friendly in terms of cabinet compatibility, we have added an impedance selector* to the rear panel, with three options ­ 4, 8 or 16 Ohms. [. . . ] BASS CHANNEL INPUTS These are the guitar inputs for the Bass Channel. The top input is `high sensitivity' and the bottom input is `low sensitivity', the latter being 6dB lower in volume than the former with a darker sound. MAINS INPUT Your amp is provided with a detachable mains (power) lead, which is connected here. The specific mains input voltage rating of your amplifier is shown on the back panel. [. . . ]