you will not achieve any thing by using what you described as the air will leak out between the rubber seals and stop the movement of your sub . i used 2x8inch subs before on a bis sitting in the "boot space" in a custom built box , and a under seat sub which i dont think are made anymore (mondeos had them ).the best thing to do is make yourself a big nasty install to put it all in. i have today put in two twelves sitting in separate boxes (sealed) (sony 1200w)1x 600w 4channel amp (using 2 bridged)kenwood , 1x 200w amp (jbl) to power speakers, 1 pair of infinity 6x9 full range , 1 pair of kenwood 13cm (150w)3way . into the doors.headunit is a sony 2 pre outs:plus sub channel cd mp3 4x50w , i have also wired up a series of blue leds around this build to light up various points . i only did it today because of boredom and i had all this gear sitting in my garage , the problem with installs in this car are you cannot upgrade the alternator (no room) , so you drain the battery too easily as it isnt up to much in the first place .i killed one driving from wales to london with my old stereo on .by london i had no indicators no wipers , nothing !! i shall play with what i have put in today for a while then take it out as to be honest these cars dont need entertainment , they are the entertainment. stay cool , mick bis13 ps i will post some pics tommorow .
