anyone ever build a "stepped" box?

k_schutte
10+ year member

CarAudio.com Veteran
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?



 
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...

 
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

 
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?

 
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...

 
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.

 
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...

 
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

 
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k_schutte

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