June 2006
Beginner
488 pages
13h 2m
English
This was my first preamplifier design, conceived in the first year that I worked in the audio industry. The two gain-control solution to the dynamic-range problem was inspired by industry practice at the time – notably Radford and Cambridge Audio. I thought the rumble-gate concept was rather clever, but I seem to have been in a minority of one, as it was never even mentioned in the correspondence that followed. The level monitoring circuitry was perhaps a bit over the top, and I have to admit that I never once saw the ‘CLIP’ LEDs come on in real use. The clip-detect circuit proved extremely useful in other applications however, and I have been using it ever since. There is ...
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