I have an original JL 12W6 subwoofer. It is presently in a bandpass enclosure that I built a couple years ago with specs from JL audio. Question is would the sub work better in a ported enclosure? Would it be louder and sound better? If so how big should I make the box and to what frequency should I tune the ported box to? Available power is not an issue as I have a 500watt mono amp. thanks.