Why's that? I have always been told/read that any large ported box should be braced...40^2"s should be alright..round over the edges of the port and opening to reduce the chance of port noise if youre worried about it..
When it comes to ported boxes, id stay away from bracing...use some 3/4" all-thread if you are dead-set on it.
Ive always heard that too..then everytime i braced a box i lost teh db's...double baffle is a waste of time imo aswell.Why's that? I have always been told/read that any large ported box should be braced...
idk?..depends how large the box is..we ran 4 mt 15"s on a .5" baffle at finals...Now as to the double baffe Matt281, wouldnt that help for a 70 pound 18" driver?