We need more info than that. How thick is the wood? Also, width, height, and length of slot, sub displacement (or you can just tell us what kind of sub you have). Ports can have the same volume, but a 4" port with .39 volume will be a lower tune than a 5" port with .39 for example. If you care to do it yourself, try running the enclosure on WinISD. If you don't have it, it's a free program and very useful in box design.
how can you see what your sealed box is tuned to? the demensions of the box are W=58.25 BD=9.25 TD=5.25 H=16 1.14cuFT per sub and the wood is 3/4" thick. the subs are 2 12"cerwin vega VMAXs
Sealed boxes aren't tuned to a certain frequency. They have a rolloff point, but aren't tuned as a ported box is. The best thing to see a subs response in a sealed box is to run WinISD.