I posted a while back that i was in the market for some speakers, well i moved, car insurance doubled and taxes suck, so now that that is all past, ive decided to save the $ and get the better set of speakers. I am still in the long process of designing them [and saving for them so plz bear with me] I have just a few ?s. a) cant they be in a sealed enclosure? if yes, how big does it have to be? if yes, should I stuff with polyfill? b)if not [must be ported] could the port be up front instead of in the rear? and what phasing issues would arise from that? c) required tweeter height? d) i am looking at an enclosure that is ROUGHLY 12"wx15"dx30"tall would the av-3's be the better choice? and if so repeat above ?'s [im still in the designing phase so ill post exact interior volume when i can and when y'all answer these] thanks in advance for your help geno PS i will post plans when I get them done to aquire the HTF stamp o' approval first.