-> DH> Later on that day, (after I'd left the sound off), they DH>
-> accidentally BLEW OUT the front windshield.  Some spectater DH>
-> probably closed the sliding door on accident, and with all that DH>
-> pressure inside, there goes the windshield.  I worked out the math
-> DH> awhile ago, and if I did it correctly I figure they were running
-> DH> about 80+PSI (during peaks) in the van. That's a hell of a lot of
-> DH> pressure.
-> It's also incorrect.  Normal air pressure is 15psi.  In order to
-> reach 80psi inside the van, they've have to compress the air to less
-> than 1/5th its volume.  In other words, if the interior of the van is
-> 5 x 5 x 12 feet, you'd have to shrink one of the five-foot dimensions
-> to one foot to compress the air to 80psi.
-> Now while those subs may have a lot of excursion, it's surely nowhere
-> near that much :)
-> What more likely caused the windshield to pop out was simply the
-> movement of it from the direct pressure of the wavefronts.
You're probably right.  I'll go back and double check my equations and
the math.  Its been awhile since I've even looked at that stuff.
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