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 :

  1. Determine the power rating of each speaker.
  2. 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.
  3. Select a 70.7 volt matching transformer for each speaker, or for each group ...

Get Consumer Electronics 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.

Start your free trial