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Building Valve Amplifiers, 2nd Edition by Morgan Jones

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Chapter 1

Planning

In this first chapter, we will plan the mechanical layout of a valve amplifier and find that it is determined by fundamental physics. At this stage, freedom of choice is unlimited, whereas it will later be restricted, so it is important that the choices and compromises made now are the best ones. Whilst good planning will not save a poor design, poor planning can certainly ruin a good one. Any component that requires holes to be drilled or cut in the chassis should undergo thorough electrical testing before a layout is planned – especially if the part is not current production. It is galling to discover that a component is faulty (and worse, irreplaceable) after custom metalwork has been done and wiring completed – details ...

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