Nick. Yes, what some reviewers write is scary.
jball. Port noise is a potential downside to a ported design if it is not well executed, or the sub is pushed beyond its capabilities, but it is not an inevitable outcome of the design.
I hear absolutely no port noise in my EP350 and it is absolutely faithful in its music reproduction.
FWIW, a passive radiator design gives you some of the advantages of sealed (smaller size, absolutely no risk of port noise) and some of the advantages of ported (efficiency/extension gains from better air mass coupling). The downside here is the cost of the radiator, which is a sub driver without the motor.
