November 2007
Intermediate to advanced
736 pages
46h 32m
English
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SPEAKER MATCHING SYSTEMS
Speaker matching systems permit higher operating efficiency in audio power systems. The 70.7 volt system is preferred for high-power PA networks. Fig. 26.15 illustrates such a network for three speakers. A matching transformer is installed to match a speaker or a group of speakers to the 70.7 volt line. This is called a constant-voltage system because the line voltage is comparatively unaffected by switching speakers on or off. Network calculations are as follows :
- Determine the power rating of each speaker.
- Add the power rating to find the total power demand and use a 70.7 volt amplifier with a rated power output at least equal to this demand.
- Select a 70.7 volt matching transformer for each speaker, or for each group ...
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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.