L5/L7 ported or sealed question
 

I have a 10" L7 in a ported kicker box made for L5's i believe
Person i got it from told me to block the port to get more punch out of this (which is what i am looking for listening to lots of trance) also suggested to fill box with more of that fluffy stuff (right now there is just a bit in there used for lining - this is how kicker did it) or put dynamat in there

Any suggestions if i'm looking for tight and punchy powerful bass ?