I haven't got the foggiest. I went to the HK web site, but they don't seem to have a manual for the 740 available. Did a quick search and the best I could come up with was "EzSet/EQ II extends the system’s functionality by enabling the user to connect two subwoofers to the receiver in a stereo configuration, and then automatically applying equalization and time-delay compensation to both subwoofers individually to achieve unprecedented in-room frequency response accuracy.." I'm not sure if that answers your question satisfactorily, but that's the best I could come up with. Sorry I can't be more help.
