Does anyone know if the Pioneer wired IR jacks (labeled SR jacks, in and out, in the manula) can be wired to a Xantech IR block? They say in the manual for using another Pioneer component's IR receiver, wired in the standard daisy chain config. I have an amplified Xantech block feeding IR blasters and wired IR to other components that have mini-jacks. When I connected the mini-jack cable to the Pioneer, it not only did not respond to my IR commands, but it disabled the front IR receiver as well. Any ideas? Maybe they reverse the cable polarity or something?