The Hawks struggled offensively, shooting 32 per cent. Their 59 points is the lowest scoring in the NBL this season.
Point guard William Stinnett, in his first start, scored a joint team high of 12 points with US import Kareem Johnson.
The Rams also become strong Final Four contenders with the 95-82 result over the Hawks their ninth win.
McKenzie Moore was one rebound short of a triple double with 16 points, 13 assists and nine rebounds for the Rams. Marcel Jones scored a game-high 30.
Trailing 58-34 after halftime, the Hawks came close to within eight, winning the third 24-15 but the hosts kept their composure to boost their lead by 22.
Johnson had a double-double 21 points, 13 rebounds. Luke Aston added 17 points and seven rebounds as well as four steals. Matt Te Huna scored 15 and made five assists off the bench.