I enjoy the challenge of speaker building and design though I honestly don't have nearly enough disposable income available to properly fund such a hobby. I have calculated my current subwoofer cabinet's volume and compared it to the spec's of the Titanic sub in the past, not sure WHERE I put that data now! But I figure by the time I've got enough money for my driver and amp I'll recalculate and then decide which driver best suits my needs. Thanks for refreshing my memory buddy!