I found this really nice video on how to determine the tuning frequency of your port.
//youtu.be/http://www.youtube.com/watch?v=hZFrY77Aqz4
just thought i should share with you all who want to know how a woofer behaves at a port's tuning frequency.
yeah , i have already this video , great thing to know this video describes such a nice details on excursion of subwoofer
Your vid is not opening can u please put it again or the link
a very nice post.
really informative:)