As a designer, I have certain "signature" elements to the way that I construct a design, and that's part of what makes me different to every other person on the planet - any
system is going to have some hallmarks of the way the designer thinks embedded into it...
So yes I can do things like signal
level detection, but frankly I don't want to.
I want something that's simple, mechanical and most importantly reliable.
One of the design options looking likely is that I'll be using Apart Audio SDQ-5PIR speakers which have 2 inputs, one of which will connect to the AV
system and the other will connect directly to the
line input XLRs.
I need to tell
Crestron when something is plugged in so it can issue the relevant RS232 for the SDQs to change inputs.
There is no
Crestron gear in the audio chain at that
point nor do I want any extra gear to be in that chain. A mechanical
switch that when it goes connected sends a signal high in Cres which then triggers an RS232 command and triggers another command upon removal is trivially simple to implement.
KISS Principle applies here...