hey again y'all, i have a pair of speakers that are rear ported. they are great the way they are in my system. i was thinking of incorporating them in another system upstairs and was wondering if i could put a plug of some sort in the port. the reason for this being they would be pretty much up against a wall upstairs and i don't know if having a rear ported speaker directly up against a wall would be very good. also, if i could do this, would the speaker now effectively be a sealed speaker?