I know if the empeg receives any IR signal it will come out of stand-by

I do not have that experience with my players. My Mk1 in my stereo cabinet stays in standby all the time and responds only to the commands from its remote, not from all the other component remotes in my stereo system.

Although if someone uses a Kenwood remote near your window, I suppose that could happen. If you have a rio remote, try turning off the Kenwood remote in your player configuration. That might solve your problem.