New Room (from House to Apt) advice wanted on minimizing complaints

new room is ~ 11.5 ft by 22 ft. i was lucky enough to only get a neighbor on one side of me, so for purposes of reducing the "Turn That Down" complaints, i was going to put the speakers firing away from the neighbor's wall (ie using that wall as the front wall, with rear of speakers facing neighbor). this means the long wall gets the speakers. so sidewalls will be no prob. but what else can i do to minimize noise travel through walls? any soundproofing / acoustical drapes that i should put on front wall? 

i will decouple subs from floor by putting 3" maple blocks under ea sub. 

(plenty of 16" tube traps and 6" bass panels avail).

tia
rhyno