Because if you look on this website http://www.teamtoxicbass.com/~pete/car_audio/index.html he doesnt seem to give his enclosures much air volume for the sub only...As you can see in his pictures the sub chamber looks like it has way less than needed space and the rest of the box is port area, but when you go a mathmatical guess it comes out to how much internal air volume a sub needs...
if your talking about his rear loading horn boxes it's suposed to be that way. he build some insane boxes. I'm so jelous of his ava and XXX setups. He designed my box for my Mags.... i cant wait to hear it 8)
i havent looked into TCAB nearly as much, but i think pete is a VERY good box builder not only in quality but he calculates EVERYTHING. he makes a box that finds the perfect meet were your sub and car sound best. he calculates the best option for the sub, the best option for your car, and puts them together. he's always testing new designs and stuff. like his box for a 6.5 inch woofer on 75 watts a guy thought was a 12 on 400 watts. or his 3 inch woofer that actually made the trunk vibrate. pretty cool stuff lol.
haha tight...ya the box designs he has on the website look perty badazz and complicated...i have just heard more about TCAB stuff and just heard about TTB today on this forum lol...and they look awsome