MCACC does not EQ your subwoofer. Even "Advanced MCACC," found in Elite receivers, does not EQ your sub. My main AVR used to be an Elite 21TXH with adv. MCACC. Once I switched to an AVR with Audyssey MultEQ XT, my sub integrated with my mains much better, and audyssey did a great job correcting for different seating positions where bass sounded too boomy.
ht Panasonic 60" ZT60, Monitor Audio: Silver RX6, RX Centre, Silver RX1; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D
2ch Sony KDL-32W650A, Sonus faber Toy Monitor, REL T3, Marantz PM8004, Sony BDP-S1000ES, JVC T-X3 tuner, Apple TV, Peachtree Audio DAC•iT, Sennheiser HD598
pc Monitor Audio Radius 90HD, Audioengine D1, FiiO A1