Hi! My design is finished... though I was wondering about stuffing a vented sub and its influence on overall system design. I have the material for a 60x60x60 cms. box. Braced, I calculated an approximate volume of 170 liters. But I forgot to consider the bracing, port and driver volume. So I end up with approximately 155 liters - I'd say at least 10 liters' short of an adequate design. If I decide to stuff my vented sub, can I gain a bit of perceived space? For example, if I use 4 pounds (2 kg.) of stuffing, would I gain back some 20% interior space - say, 30 liters? Then I would get a 180 liter enclosure, which would be ideal for my project. Can I get away with using even more stuffing than that? What's the limit? Any specific recommendations? Then, there's the issue of Adire's plans for the Adire Alignment box. I copied their design into WinISD for study, and the port size the software comes out with is completely different to the one Adire suggests (the program says 14" of a pair of 3" ports are needed, while Adire says a pair of 12" will do fine. All I can think of is that the stuffing is changing the port length. Any specific ideas about this? Thanks for your help! Javier.