That is not the case. Around the tuning frequency (about 1 octave above and 1/2 octave below) the sub will see a acoustical impedance which will create a pressure build up inside the enclosure. The pressure will be released around these frequencies through motion of the port air mass. When you play frequencies about 1/2 an octave below the tuning frequency, there isn't an acoustical loading on the sub and the sub will have to rely on it's own braking for cone control. So no, the ported box will not magically stop all sounds below the tuning frequency but cone control becomes degraded which makes LFE more difficult.say my box is tuned at 33 Hz.. does this mean it wont hit the lows in rap songs like 30-32 Hz or what?
It's the frequency at which the air mass in the port resonates naturally. It will also be the frequency that has the least amount of cone movement.sorry for thye noob question, but what does the hz tuned to really mean?