I cut and pasted this from the AVS forum, where a similiar discussion was talking place.
The following is from the VP of director and market for Sherwood Newcastle, pretty encouraging for me...
"While bipole and dipole speakers can be more difficult to locate, our office system and my home system both utilize dipole surround speakers without issue with the current R-972 firmware. Early editions of the firmware were usually but not always successful. I have also successfully calibrated systems using planar magnetic speakers with the R-972 and Curt has similar success with Accoustat type planar electrostats. If we can get an unambiguous signal at 5 kHz, speaker recognition and accurate localization should not be a problem. Jeff"
