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<blockquote data-quote="Moble Enclosurs" data-source="post: 7837507" data-attributes="member: 634917"><p>You can utilize the flooring of the vehicle to act as part of the port for loading purposes if you need to. So, if you have a down-fire design that has a port facing the rear, you may not be able to use that for extended low end, even with the placement.&nbsp; Better to face the port down and do a tapered port with equal cross-section (averaged) to that of a constant port area for a similar response, and have it open up TO the rear of the vehicle.&nbsp; So, driver AND port facing down will work well as long as there are no major obstructions in the way and you allow enough room for driver excursion. Also, the front of the &quot;down fire&quot; are should be sealed off by 3 bounding walls for controlling any unnecessary cancellation issues. Let the vehicle control the low end by loading and the sub to be controlled by a moderate tuning, considering it is an 87 jeep. Hope that helps</p></blockquote><p></p>

[QUOTE="Moble Enclosurs, post: 7837507, member: 634917"] You can utilize the flooring of the vehicle to act as part of the port for loading purposes if you need to. So, if you have a down-fire design that has a port facing the rear, you may not be able to use that for extended low end, even with the placement. Better to face the port down and do a tapered port with equal cross-section (averaged) to that of a constant port area for a similar response, and have it open up TO the rear of the vehicle. So, driver AND port facing down will work well as long as there are no major obstructions in the way and you allow enough room for driver excursion. Also, the front of the "down fire" are should be sealed off by 3 bounding walls for controlling any unnecessary cancellation issues. Let the vehicle control the low end by loading and the sub to be controlled by a moderate tuning, considering it is an 87 jeep. Hope that helps [/QUOTE]

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