Have you ever read anything by Phillip Newell "Loudspeakers for Monitoring and Sound Reproduction" is a great book without much math written for non engineering types. Peter Qvortrup of Audio Note fame said listen don't measure because 2 things can measure exactly the same but sound completely different. Newell explains why this is so. Modelling is an approximation not what you really hear do you stillhave to listen. Vented will give more bass but not mote accurate bass. LISTEN.