So, no in room measurements of the Marantz AV10 4 subwoofer implementation, or, as Gene has emphasized, implementation of front and left speaker bass into the LFE channel? After all, the in room results are what really matters. The AV10 implementation in room of 4 subwoofers seems to be great subjectively, based on one correspondent here, but still that testimony may not be enough to justify spending $7000, if one is upgrading from an 8802A, which does two, and not perfectly.