On May 28, 2009 at 10:38, zzzzdoc said...
Ran into this issue and designed a box to convert the 12V continuous trigger signal from an Anthem D2 to a pulsed on-off signal that the Proceed Amp 2 and Amp 3 require to turn on off.
I've never run into a device that needed pulsed signals (3-18 V for at least 100ms) to turn on and off. It's such an odd way of doing things.
This is a fine example of taking a simple concept and overly complicating it. Why is it engineers feel they need to improve upon an idea by designing a complicated version of a simple concept?
If the amp turns on and off with the same momentarily high signal, I could see how this could potentially become an issue. Should a signal be missed, it could cause the amps get out of sync with the preamp, unless there is some sort of feedback. A feedback loop would certainly resolve any potential issues, but then the circuit ends up being more complex, can be more prone to failure and becomes more costly to implement.
Didn't these guys ever hear of K.I.S.S.? (and no, not the band)
JP
