Chapter 11
Moving-Coil Head Amplifiers
Moving-coil cartridges are generally accepted to have a better tracking performance than moving-magnet (MM) cartridges because the moving element is a set of lightweight coils rather than a magnet, which is inevitably made of a relatively dense alloy. Because the coils must be light, they consist of relatively few turns and the output voltage is very low, typically in the range 100–700 uV rms at a velocity of 5 cm/sec, compared with 5 mV rms from the average MM cartridge. Fortunately this low output comes from a very low impedance, which, by various technical means, allows an acceptable signal-to-noise performance to be obtained. Apart from the low output, a further complication is that the output voltage ...
Get Electronics for Vinyl now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
