hey i have one that im looking to sell that has 2 tens in it.....so if you want it let me know...its carpeted in black....fits perfectly under the seat, you cna have the seat up or down with it there....and it doesnt stick out past the seat...pm me if you are interested
If your are any good with some MDF you can make you own custom box. The down fire boxes kind of muffel the woofers. I built my box and made it fit under the seat and fire up. You can do several different designs make it work for you.
actually anyone could make a box...the hardest part is getting the measurements(which im sure u could goto a local store that makes boxes and they will give u the measurements for free[thats what i did])
heres the box i made...
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