I have an idea, see if the klipsch interface has a sensitivity setting for the sleep function. If the one comment about low level noise is true, maybe you can reduce
the sensitivity to it and get proper operation back. If it truly looks only at audio, there must be some sound still there, have you listened close to the speakers to see
if you can hear anything coming out when the TV is off?[/quote]
Thank you for this info and your ideas. There is no sensitivity adjustments for the sleep function. I do hear a very faint hiss when TV is off and I put my ear up to speaker. Interestingly I tried turning on the soundbar with the TV off, it took about 3 minutes before the soundbar woke up, seems that the TV may be sending out an intermittent signal when it is off. Unfortunately this appears to be one of those unintended incompatibility issues between two different manufacturers. Still a royal pain in the a**.