need ideas for sub enclosure design

That is a nice setup, the only thing I would have done different is put the connectors on the back or bottom of the enclosure to completely hide the wires.

i bought some 3/4 mdf and put this together in a few hours one weekend..... 2 HiPhonics 6x9s.... hiphonics 6.5 mids with crossovers..... 4 hiphonics highs.... 2 kicker 12" L7s.... HiPhonics brutus mono block 2000watt amp..... 2.5 power acustic farad cap. ...... 0 guage monster cable

is that on the stock electrical 90-b22?? -bf

for now.... yes..... but soon to upgrade to a gm 1 wire 180amp alternator