I've got my whole stereo ordered off ebay and it all should be arriving within the next week. All I need now is the box. I'm getting 1 12 Alpine Type R DVC. Alright, the recommended sealed box volume is .75. The smallest I have found is .85. Would this work? Also, where could I find a box with a volume of .75. Thanks

 

Without having done any enclosure modeling (software programs) on this particular sub, I would guess that you'd have excellent results with the .85 box. In general, the larger the box gets for a given sub, the lower it plays and the boomier it gets (which is a good thing, to a certain extent). The sub would also require a little bit less power to play as loudly as in a smaller box. A smaller box would make the sub play tighter and handle more power. So there is a range to work with for the enclosure size for any speaker, with trade-offs in either direction, but don't go too big or too small.

 

Micah is mostly right. Larger box will be go lower, but will not be boomier. Larger will actually have smoother, slower roll-off. Power handling will be slightly less, but the sub basket, magnet, etc will most likely take up 0.10 to 0.15 cubic ft making the box near the ideal volume for that sub. Smaller box will play louder as their is a rise in response near resonance in a box with Qtc greater than 0.707. That's what causes the boom in a boomy speaker.