Please demystify the 12v trigger for me...

Discussion in 'Home Theater Projects' started by Drew_W, Jan 25, 2004.

  1. Drew_W

    Drew_W Screenwriter

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    It is my understanding that when connected (i.e. from pre/pro to amp), the pre/pro sends a signal to the amp and tells it to turn on (on cue, of course).

    Is the reverse also possible? i.e. when the pre/pro is turned off, the amp shuts off as well?

    Thanks.
     
  2. Wayne A. Pflughaupt

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    Yes. It would pretty silly for the 12v trigger to be a "one way" function, wouldn't it?
     
  3. Drew_W

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    An amp I was looking at said "12 volt DC automatic turn-on circuitry".

    I just wanted to make sure it was automatic turn-OFF too. Thanks Wayne.
     
  4. Wayne A. Pflughaupt

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    Yes, it works just like the amps in car stereos: The trigger acts like a remote switch and turns the amp both on and off. Buy with confidence! [​IMG]
     
  5. LewB

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    Think of it as a 12v outlet, when pre/pro is on then there is 12 volts on the line. When pre/pro is off, then there is 0 volts on the line. When you say 'sends a signal' I get the feeling that you are looking at this as a 'blip' when the pre/pro turns on/off. The amp has an electronic switch (or relay) in it. 0 V from pre/pro means that the switch in the amp is off, so the amp is off. 12V from the pre/pro means the switch is on and so is the amp.
     

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