Please don't do a bandpass setup!!!!!!!!!!!!! They are load and that is about that because they sound like @$^#. That is true if you aim them into the trunk lid they will be louder but the trunk lid will rattle 5 times more than aiming them forward. My system aims them into the back seat which works for me cuase i never crank them up a lot. I like my music to sound clean. When you have to much bass it sounds like %$#@.