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View Full Version : anyone ever build a "stepped" box?



k_schutte
02-22-2010, 05:16 PM
if I don't find a pair of 12"s I think I might get an HDC318A. Only problem is that I can only fit about 16.5" under my rear deck. however I can go up to almost 18" after that rear deck. so my box would have a "step" to it more or less, like the "drawing" shows. Anything "harmful" in doing this?

http://www.imagechicken.com/uploads/1266880729081634200.jpg (http://www.imagechicken.com)

PurposeSoap
02-22-2010, 05:40 PM
...

k_schutte
02-22-2010, 05:53 PM
...

thanks for the help... LOL

TMali
02-22-2010, 05:57 PM
i have, i ended up not liking it at all, so then i just made my subs upfire

k_schutte
02-22-2010, 05:58 PM
what didn't you like about it?

I can't "up fire" because my port is going to come up through the rear deck... plus the sub would hit the rear deck unless I made the box really short but that wouldn't work because I can't go much wider/longer...

PurposeSoap
02-22-2010, 06:05 PM
well I was going to suggest that you need to account for the 3/4" wood clearance on top and bottom of the sub. So really you would need 19.5 " ? I dunno, looks like you sorta accounted for that..... awesome drawing tho

TMali
02-22-2010, 06:09 PM
what didn't you like about it?

I can't "up fire" because my port is going to come up through the rear deck... plus the sub would hit the rear deck unless I made the box really short but that wouldn't work because I can't go much wider/longer...

i had alot of box vibrations, maybe if you can re-enforce it?

k_schutte
02-22-2010, 06:10 PM
LOL... drawing is sweet right!
the cutout is 16.75" so I would need the box to be a little bit taller (probably do 18.5") but other than that...


FTR: I am thinking about an 18" BTL now since TirpleB45 is selling all of his...

groundpound4200
02-22-2010, 06:13 PM
I did once for 4 12" Type Rs in the trunk of an Intrepid
http://i47.photobucket.com/albums/f159/hooperm/025.jpg
http://i47.photobucket.com/albums/f159/hooperm/026.jpg
http://i47.photobucket.com/albums/f159/hooperm/027-1.jpg
http://i47.photobucket.com/albums/f159/hooperm/028-1.jpg
http://i47.photobucket.com/albums/f159/hooperm/029-1.jpg

O.G. D-Wet
02-22-2010, 11:38 PM
that intrepid box is lookin clean

groundpound4200
02-22-2010, 11:41 PM
thanks man... fastest box I've ever built. Still needs a good sanding and a finish but the guy who I built it for is happy. It was kind of a puzzle putting it together so I could screw and glue everything I needed to. I wouldnt do the "stepped" thing for ported boxes as it would probably cause loading issues, this one was about 3.6 cubes sealed.

k_schutte
02-23-2010, 12:03 AM
thanks man... fastest box I've ever built. Still needs a good sanding and a finish but the guy who I built it for is happy. It was kind of a puzzle putting it together so I could screw and glue everything I needed to. I wouldnt do the "stepped" thing for ported boxes as it would probably cause loading issues, this one was about 3.6 cubes sealed.

this would have been ported... I decided to go with a pair of 12"s like I originally wanted to so. This might interest some other people though so...

groundpound4200
02-23-2010, 12:12 AM
Its probably not a big deal in a low powered setup where cosmetics are key but if you're chasing tenths on the meter then thats another story

9515ROB
02-23-2010, 12:16 AM
yeah i had a box like that in my mustang with 1 DD 9515 and my buddy has 1 with 2 aq hdc3 15s i dont know if it was the box or my amp clipping but i unloaded my subs sometimes....im selling mine depending on what u plan on running in it

psych0ticnemes1
02-23-2010, 10:03 AM
Slanted front baffle???

mlstrass
02-23-2010, 10:28 AM
my wall is actually 3 boxes connected together and has numerous stepdowns for height and width. I'ts like a labyrinth, but seems to work fine.

mlstrass
02-23-2010, 10:29 AM
yeah i had a box like that in my mustang with 1 DD 9515 and my buddy has 1 with 2 aq hdc3 15s i dont know if it was the box or my amp clipping but i unloaded my subs sometimes....im selling mine depending on what u plan on running in it

playing way below tuning? My wall unloads one sub even though it's symmetrical inside....

michaellane
02-23-2010, 10:53 AM
my stepped box sounded horrible! just to let you know....slanted front baffle is the best idea

46panel
02-23-2010, 09:53 PM
This is what I am going to be building soon, kind of a stepped but only 3 inches on each side so not much,just to get over the wheel wells. Its not perfect and dont mind all the numbers just for my reference and to get a visual. Also will be braced with threaded rod just didn't put that in there.
http://i286.photobucket.com/albums/ll98/Kris1946_2008/TheGOODdesign.jpg

mazdakid
02-23-2010, 10:12 PM
I had one like that with an 18 in my 4 door civic. i had about the same height as you and used the spare tire well to get the other 2.5 or 3" i needed. I really liked it and was probably the loudest ive ever had.
http://img51.imageshack.us/img51/6281/picture067gv8.jpg (http://img51.imageshack.us/i/picture067gv8.jpg/)