I have 2 800 watt 6x9's in 6x9 boxes and Im gonna power them with a 115 watt amp. My question is it seem the bass is a lil flat in the boxes and I noticed that subs have air holes in them to release pressure. Whould the sound be improved by drilling a 1/2 or 1' hole in the boxes? I tested them om a 120 watt home stereo. What should I do?