[hobgoblin351]

Hey you've got a good memory. Thats right it's a type R 10". Now you sya I need between .5 to .8 cu/ft of space in the box. Is that before or after i put the sub in? I mean do I build say a .5 cu/ft box and put the sub which will take up space thus lowering the amount of free space in left in the box. Or do I build a box bigger than .5 cu/ft say 1 cu/ft. Then install the sub and have .5cu/ft of space left after taking into consideration the size of the subwoofer? All I have to do is find out the volume of the subwoofer and that should be easy. Alpine probably has that listed somewhere.