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, RX1; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D, Panamax M-5100PM
2ch Sony 32" W650A, Sonus faber Toy Monitor, REL T3, Marantz PM8004, Sony BDP-S1000ES, JVC T-X3 tuner, Apple TV, Peachtree Audio DAC•iT, Panamax MR4300
pc Monitor Audio Radius 90HD, Audioengine D1, FiiO A1
+ Sony 65" XBRX850B, Sony BDP-S5100