The key to the upfiring box is to keep the woofer far enough awy that it doesnt hit the seat . use grilles . firing into the seat will not muffle or distort the bass at all. It actually helps load the woofer a little and sounds really clean if you do it the right way.
i actaully sell some really nice up firing boxes for 2 12 or 10s .Enclosure has 6 inches of mounting depth .. i sell them on ebay and they ar fiberglassed internally . each sub is in its own chamber with 1.15 cubic feet per driver.
My ebay seller id is christyt3838 and my feedback is perfect. or you can email me at tech12volt@yahoo.com. here are some pics. The install pics arent that great but you can see it fits perfect and i can do a titan logo instaed of nissan if wanted. you can email me at tech12volt@yahoo.com.
i actaully sell some really nice up firing boxes for 2 12 or 10s .Enclosure has 6 inches of mounting depth .. i sell them on ebay and they ar fiberglassed internally . each sub is in its own chamber with 1.15 cubic feet per driver.
My ebay seller id is christyt3838 and my feedback is perfect. or you can email me at tech12volt@yahoo.com. here are some pics. The install pics arent that great but you can see it fits perfect and i can do a titan logo instaed of nissan if wanted. you can email me at tech12volt@yahoo.com.