I recently built an endtable Tempest. (see here) I used the PE 250w plate amp (like everyone else), but I've been left wondering. How would it sound with out the 30hz rumble filter? Some people say not having a filter for sub-sonic sound helps you 'feel' a movie. Some say I miss out because I have a filter. I've never heard a sub like this without the filter (I don't peronally know anyone else into HT like us here at HTF). So, I don't know what I'm missing. I've been toying with the idea of swapping amps to one without the filter. What are people thoughts and opinions on the matter of filtered subwoofers?