February 2016
Intermediate to advanced
216 pages
14h 38m
English
Content preview from Newnes Audio and Hi-Fi Engineer's Pocket Book, 3rd Edition
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248
Unconventional speakers
Orthodynamic drive This has a diaphragm driver similar to
an electrostatic, but impelled by a magnetic field instead of
electrostatic force. It thus has the advantage of an electrostatic
without the need for high polarising voltage and risk of flash-
overs.
The plastic diaphragm has a pattern of copper or
aluminium conductors etched by printed circuit techniques.
The magnetic field is produced either by short individual bar
magnets, or ceramic magnetic material plates with holes, and
zones magnetised between them. The magnets or plates are
mounted either side of the diaphragm with the poles facing it,
alternate pole ...
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I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.