Ok, actually followed my toes into the water and now up & running.
My starting point is to use this as a way of controlling all my AV equipment remotely. Single room only at the moment.
OS far, so good
Trying to use the audio out from the HC-250 to supply a powered sub; if I'm upstairs and it's too much: turn it down, etc. etc.
Delay, really nasty delay
3 - 4 seconds
Literally (I've measured it)
What is that all about?