Is anyone interested in a high efficiency subwoofer?

I've written a paper that shows how to make a extremely compact subwoofer with high efficiency. It's not a bandpass, or a horn, but it's similar to both. The paper is based on a comment that I read from Earl Geddes here.

Check out my article and let me know what you think. It's a free download of course.

If you want to discuss any points in the article,
my yahoo messenger id is j v a n o m m (remove the spaces.)

• Download the pdf