I am building a speaker/subwoofer system for home/car. How big a box do I need for good bass?
Check out the “Software” section elsewhere in my website to download programs that can help you figure this out. If you are OK with math or a scientific calculator, I have listed some formulas in the “Useful Conversions and Formulas” section that will let you figure the optimum sized enclosure for sealed, ported, and single reflex bandpass.