November 2007
Intermediate to advanced
736 pages
46h 32m
English
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PERMANENT MAGNET
The strength of the permanent magnet largely determines both speaker efficiency and quality of reproduction. The magnet must furnish the most powerful magnetic field in order to maximise the voice coil movement for any given signal. In general, the stronger the magnet, the better the power handling capacity of the speaker, and the better the reproduction.
Woofers are speakers designed to reproduce the bass, or low frequency, portion of the audio-frequency spectrum. For woofers, the designer does not choose the strongest available magnet as adding more magnetic flux will reduce the bass performance of a woofer because the moving system becomes overdamped. The designer, therefore, chooses the magnetic flux level that provides the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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.