Gotcha, I only listed 40hz for simplicity.
Thanks man, I did check out that thread but didn't see a definite answer.
How bout "Everything you wanted to know about box rise but were afraid to ask"
Thanks man! I never quite thought of it that way. And yeah, this is for a daily setup. This whole idea started when a local guy did the math on his amp and found that he was only seeing roughly half of the rated power, far under the rms rating of the woofers. His solution was to get a more powerful amp. The amp would be rated at far more then woofers rating, however after rise the power to the woofers would be closer to the rms rating.
Also, 5db! That's very impressive.
From the man himself. Thanks for the info. I have some more searching/studying to do.
Thanks everyone for the replies.