yeah i c what u mean. I jus wanted to use the Circuit city subs only cuz i get a big discount and i can return em for the next 5 years if they blow. Or i can trade em in and get somethin else within that time period. Well im jus gonna try n figure somethin out myself with this damn ported thing. I jus wanna build a 3 cu/ft box tuned to 30 hz. Ill get back to u when i find somethin out thanks for all the help man