subwoofer enclosure

hi, i am planning to build a new subwoofer for about 500 rms, can onyone design me a subwoofer enclosure?

Yes I can if your still needing it.

Are you still looking for information regarding this topic? If so, please provide more information regarding your specific requirements. With only a power rating, it's impossible to provide you with an adequate answer to your question.

At the very least, please provide the following details: Do you already have an amplifier you're planning to use? If so, which amplifier? Where will this system be located? Do you wish to achieve a balanced sound, or do you only want the system to play loudly? What are your space requirements? What is your budget?

-Brandin