If you can't, you have a very strange amp!
Can you explain bit more on this. How do I connect signal, if input is shorted. Sorry for dumb question. But I don't know how it works.
Regards
Goutham
You can short-circuit the inputs to ground for a "working" class D amplifier board. I often do it through 1K resistors to limit currents just in case.
With "working" I mean fully functional and NOT the inputs on the class D chip directly. The IC inputs need some bias to behave well.
You short-circuit the inputs when you want to examine how the amplifier behaves in idle mode. During such examination you do not connect an input signal.
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