highend audio shows are not exemplars for equipment placement. having helped in the setup and teardown of rooms at ces and stereophile shows, i can tell you that you must frequently use your space for display as much or more so than for optimum sound quality. when i took the equipment rack from betweem my speakers a few months ago and treated the back wall where it had stood with asc wall panels, i experienced an improvement in soundstage depth and width nearly as great as upgrading the speakers themselves. (i now have only my amp behind and between the speakers--i use 6 ft. cables and 21 ft. ic between amp and pre). it costs some for this setup but its well worth it.