1000W Simple PA Amplifier

This Amplifier is simple class AB design for PA
 

Attachments

  • APEX BA1000 SCH.jpg
    APEX BA1000 SCH.jpg
    579.5 KB · Views: 40,996
  • Like
Reactions: 1 user
.......... but it will be a nightmare to dissipate all those watts wasted as heat...........
With 1r0 emitter resistors on the outputs, the output bias will be approximately 26mA for optimum ClassAB.
This gives an output stage dissipation of ~51W for all 18 devices. Add another 6W for the drivers. Quite manageable, especially for a "big" amplifier that will probably be fan cooled.
 
Last edited:
With 1r0 emitter resistors on the outputs, the output bias will be approximately 26mA for optimum ClassAB.
This gives an output stage dissipation of ~51W for all 18 devices. Add another 6W for the drivers. Quite manageable, especially for a "big" amplifier that will probably be fan cooled.

This amp will be cooled with two 0,14A/220V fans in parallel 120x120mm size.