The former Preston and Manchester City forward fired his third goal of the season to sink struggling Ipswich as Barnsley secured a third win in their last four matches under new manager Mark Robins, who replaced Simon Davey last month.
Macken said: "It was quite dramatic wasn't it. I think if you win the game then you have done enough throughout the 90 minutes. It was very pleasing for us.
"The wind played a big part in it, but we kept pushing on and creating chances. It was another win at home which was even more pleasing."