While doing my research on subwoofer placement, harmonic frequencies and the science behind modes, nodes, resonance frequencies, etc. I came across this article and wanted to share.
If you read it from top to bottom, your audio IQ will surely increase! Hope this helps as much as it helped me:
A Guide to Subwoofers (Part II)
If you need a refresher course, you can check out Part I
here.
Mike