I have just peurchaced a velodyne 12 and plate amp off good old ebay, seemed like a great deal , and still does if.......i can find the specs for this sub, the sub is origonaly part of a ct-120 subwoofer,  I have serched high and low and can not find specs to design a box with. I am  leaning towards a house wrecker box but would like to know if this can be done with out specs, or if a death box would be better.  I have located outer dementions of the factory box but this is a guess at best as the mdf thinkness is a guess and who knows what the inside looks like.  any help that any one has or sudjections on getting the best audio performance for this unit.My choises are either DB, HW or build a ported cube! I listen to mostly home theater, and alot of dirty internet music that has so so bit rate, but do perfer alot of base.  i have bookshefl speakers for about 2 more months , then i will be adding some towers made of 6 -7 inch drivers

is the house wrecker not a ported design?  i kinda figured that would be the best box for me as i assume it is ported front and back side.  but the size i would assume should play a factor.   do you build the DB-12 as one said size and then just move the shelf to get the best sound?

ok, so what would you do ......and can you build the Hw with out the specs to its fullest ?  OR are you required to size the chambers?  and is the DB sized as well?

by sizeing i was asking if the chambers are built to a mesurment calculated by the woofer perametors of it the plans just say build it 24 inches by 14 for example.  and lastly is the db-10 plans the same as the 12 , cause the db-12 download looks like it is set up for a clamshell setup. what plans would i order, the db-10 and scale it up, or the db-12?