bass more punch

hi everyone

i m using meridian g68 with 621 for pre ,proceed hpa3 n thiel mcs1 n 2.3i for ht setup . is there anyway to improve my bass more punch from 2.3i ?my sub was fine with strong punch,just the way between sub n the front was missing something .i knew the krell power amp may help ,but is there any other way to improve instead of changing gear, because i m satisfied with the mid n high now but not the bass from my front speaker.

thanks a lot