6 db's is 4 times as loud......

i dont understand why people waste their time with bandpass boxes? someone please tell me.

they are not the best for music and definately far from good for spl, especially in a car where most of the interior is stock.

fox man, you should be doing 150 with all that cone and power you have, your only down fall is the stupid bandpass box.

guys you gotta think. if these things were any good for spl dont you think everyone and their mom would be rocking these types of boxes??

they work well in a car where you can turn your car into a box itself (as in a band pass wall) but other than that it's a waste of time.

fox man, build a proper ported box with everything firing forward and you will gain like 3 db's, i almost guarantee you.

and Tim....., i have no advice for you. could actually use some of your advice.

His current setup Yuli is 2 12's subs and port forward. Box is just too big and not enough port.

deadly I built alot of cavaliers in the past... 150 is fairly easy... a single 3kw amp off a single optima 34/78 series battery

its especially easy if you know what your doing before you start the build:la:

so we topped out at 136.7 rear facing with one 4in round port lol i hope to have all the pics up asap so tomorrow were going to move on to a front facing sub/port setup and see what happens.Yuli if you really do need some thought from me man name it lol you've helped me out many many times in the past

Just for the record... Derek (Fox_racin4) and Dylan have never built one of my designs. They get designs from some American. :eyes: ... and we'll never talk them into tuning anywhere near there. They're all about the lows. :smokin:

ok here's life made simple
if I remember... 32 or 34" wide... ( its been a few years) 24" deep and 14" or 15.5 high" you gotta measure... needs to have a folded port... it should tune 44-49Hz
just build it!
facing forward... box pucshed all the way to the back of the trunk yields best results... dont forget small angles in port and behind subs... to tune this box you play a bit with the size of the angle behind the subs.. the bigger you make it takes more air and tunes box higher... pretty easy ? now get building.. your port should be around 8" or so and the actual length what the subs see is close to 30"

Think it'll work in a hatch?

it should say 8" wide and 30 long


and no dont use that box in a hatch...different car different loading
what car hatchback?

i finally had time to sit and post the pic's of the box we built last night so here ya go its 4.2 cu ft before port and sub
Attachment 19110
Attachment 19111
Attachment 19112
Attachment 19113
Attachment 19114
Attachment 19115
it work killer for street beats but not so well on the term lab it was tunned to 44 hrz sounded great lol.So i ripped out the round port and this is what it looks like now next step is to turn it forward but we thought about tryin this new port first
Attachment 19116
Attachment 19117
Attachment 19118
Attachment 19119
and some numbers from last night to boot
Attachment 19120
Attachment 19121