Mine was done professionally....my 12's are mounted on the front of the enclosure firing right into the cab of the car...there is a big port for each sub that runs in between the 2 subs as well so it can breath...my enclosure takes up the whole hatch of my car....sorry I don't have any pics of the front yet....here's what my system consists of:

2 Earthquake Magma 12 inch subs, 6 1/2 inch Earthquake mids in the doors, 3 1/2 inch tweeters w/crossovers in the dash, Earthquake 6x9's in rear, Pioneer 6600 head unit with screen savers, Earthquake DHC 200 digital amp for subs, Earthquake 4 channel amp for highs, Audio Control line driver in console, American Eagle capacitor, Stinger dry cell battery in trunk, Stinger fans to cool amps, Pro Power 210 amp alternator, Stinger alternator relay under the hood, all Stinger wiring and RCA's, custom vented and ported enclosure made from 3/4 inch MDF covered in black and silver carbon fiber vinyl.

 

what did all that cost you? it looks sweet as hell. i wouldnt ever need that much though. i just have an amp and a 12" and it works for me

 

Altogether, I have almost $5000 into my stereo system but I'm into big sound not just big bass although my system will hit in the 152 db range easily (last time it was metered anyway) with the gains on the sub amp turned only 1/4 of the way up...so when I get a few more adjustments made I can turn the gains up more and get more out of it.

 

damb that is what i payed for my car? i guess if you are into it then its totally worth it.