What the best size box for a 12 sony explode subwoofer?

Although enclosure building is not as simple as it may seem, it is by no means impossible. Sealed enclosures are the easiest to build, as the only thing affecting the box tuning is the internal air space. On a ported enclosure, the port diameter, length, and enclosure internal air space all affect box tuning. The best way to determine the best box size for YOUR subwoofers is to consult the data sheets / instructions which came with the sub, look up your subwoofer online, or contact the manufacture directly if unable to find the answer elsewhere.

Another VERY good resource is "The Car Stereo Cookbook", available at many book stores as well as online. Almost everyone in the audio industry has read and will recommend this book.

MOST 12" enclosures will range anywhere from 0.5 cu. ft. to 2.0 cu. ft. Research WILL provide an answer. Look for info on your subs MODEL number, not just the name.

Good luck, and happy box-building!!!