Mana Acoustics Racks / Bright Star IsoNodes Decoupling >> Allo DigiOne Player >> Pedja Rogic's Audial Model S DAC + Pioneer PL-71 turntable / Vista Audio phono-1 mk II / Denon PCL-5 headshell / Reson Reca >> LFD DLS >> LFD PA2M (SE) >> Royd RR3s.
OK...in layman's terms. Making the port bigger reduces the port noise BUT changes the port tuning. You have to calculate the right diameter and length of port for any given 'speaker design to make them work properly...ie to deliver the bass response that the port is there to help deliver.