A Sub box shouldn't be just placed in the trunk either. It should be securred to the floor pan somehow, by either using existing mounts, or fabricating your own.. it's possible for the box to remain in the trunk, but it's more than possible for it to break through the back seats as well...

Mark

LMAO. I agree with you. Had 2 oldschool jl audios in a sealed box. Crashed my first car in freezing rain. Subs stayed put! Put them in my next car actually... Good times.

Since were on the subject i bet if hes got his seatbelts holding the box in place,i bet hes got his more secured than most hatchback stereo fanatics lol.

Anyways,dont be scared to make that seales box smaller if ya need to, sealed boxes are so much more forgiving than ported.
Chop the top,and make it a little wider and deeper, and fyi the devider in the middle,next box make it fit tight all the way around the inside to actually seal each woofer from eachother,most amps being used for subs these days are mono so i wont go there, but if one of those subs dies,and you wanna use the other by itself,you just doubled the airspace for the single woofer and it will die shortly too while sounding like poo lol
By the way you did a pretty good job on that box for a first try! You will be making them for youre friends soon too lol(seriously)

cheers

Hehe i had a kicker ss12 box in the trunk of my 77 monte carlo back in 1993,was getting off the 427 onto qew when my back left tire blew at 16o kmh,(im pretty sure i hold mississaugas most unintentional 360s haha) ya but the box was unharmed as was i.

Gonna Put sum new pics soon, I modified it into dual ported, and blue cover finished, pretty cool.

32hz tuning
10cm diameter port
30cm port lengh

everything is calculated by WinISD Alpha.

lol im 17 and this is my first woodworking project in my life

I guarantee ya bro, the next one you make will be so much better for the fact that youre looking for advice/help and whatnot,and it looks to me you have skills in the woodworking department! very cool good job bro!

just a question for you dongchen_han, how did you get a 5 cubic feet box in a toyota corola? i have a 91 corola and i cna barelly fit 2 1.6 cf boxs.