In Reply to: one last question re: free air subwoofer install posted by mrone on October 07, 2000 at 15:00:14:
If you do go aperiodic I would recommend putting it on the back of the speaker (trunk side) rather than as lincoln did. Lincolns setup is beautiful. Nevertheless, he is effectively listening to a box in his trunk as the membrane is on the cabin side of the driver. At least in my case I found the sound of a box in the trunk to be poor.
I have been very happy with JL stealthboxes in the rear and MB Quart Qseries in the front. If I was to do it again I might look for a slightly nicer speaker up front and force a 6" in. This would require cutting if you don't want to lose your dead pedal. Also sound deadening the kick is needed as a single driver running down to 100Hz can make stuff rattle.