OK guys, I got a reply from the Klipsch folks themselves, it looks like leaving them on & not worrying about them is just what they had planned all along.
Maybe this information will help others in the future when more people get the newest Klipsch Promedia 2.1 speaker systems (without On / Off Power Switch).
I'll let you know if any problems occur by having them on all the time...
"Hello
I am sorry to hear about the problem you are having with your system, however it is safe to leave those on, when they are not being used they take up less then 1 watt of power. The new technology and amp system it will not damage that.
When replying to this email, please include the original message and all replies.
Derek Schultz -Product Support
Phone: 1-800-554-7724 Fax: 1-317-860-9195
Klipsch Group, Inc. Klipsch | Jamo | Mirage | Energy
3502 Woodview Trace, Indianapolis, IN 46268"