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<blockquote data-quote="galacticmonkey" data-source="post: 6681069" data-attributes="member: 570857">Hes saying the same thing Im saying. That in a bandpass, all the sound comes through the port, so if the port is small, the sound is small. That the airspace that pressurizes the port is important as well. 8 15s wont push x amount of air in the ported chamber. They will excite however much air is in the ported chambed. If the ported chamber were say 40 cubes, they would excite 40 cubes worth of air. Then that 40 cubic feet of air will excite the air in the port, which will create the sound. Small ported chamber and small port = small amount of air moving. Big ported chamber and big port&nbsp; = big amount of air moving.Getting loud is all about exciting air, and when youre choking off the size of the ported chamber and the port you are losing all chance of efficiency.Looking at the vids, the Desiard Pawn van has a hugeeee port like my van did and a pretty big ported chamber. The port in that van is probably around 1,000in^.Im really hoping this does work out in the end though.</blockquote>

[QUOTE="galacticmonkey, post: 6681069, member: 570857"] Hes saying the same thing Im saying. That in a bandpass, all the sound comes through the port, so if the port is small, the sound is small. That the airspace that pressurizes the port is important as well. 8 15s wont push x amount of air in the ported chamber. They will excite however much air is in the ported chambed. If the ported chamber were say 40 cubes, they would excite 40 cubes worth of air. Then that 40 cubic feet of air will excite the air in the port, which will create the sound. Small ported chamber and small port = small amount of air moving. Big ported chamber and big port = big amount of air moving. Getting loud is all about exciting air, and when youre choking off the size of the ported chamber and the port you are losing all chance of efficiency. Looking at the vids, the Desiard Pawn van has a hugeeee port like my van did and a pretty big ported chamber. The port in that van is probably around 1,000in^. Im really hoping this does work out in the end though. [/QUOTE]

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