I have done that ... and the sound out of each channel is the same (vs. doing the same test with FM where the difference in the two channels is obvious). I also did a resrt of the AV on the AVIC unit without noticeable change. Someone suggested there was a reset button on the GEX tuner, but that is difficult to get to. Anyone know what resetting the GEX box actually does?
I have an AVIC-Z110BT with a GEX-P920XM tuner. The GEX antenna is mounted on the roof. While I have adjusted the volume level for the XM so it matches the levels for FM/CD/iPod, the XM sound is always monaural never stereo. Anyone else with this issue? Any ideas?