View Full Version : Box depth/ Port width help

05-07-2013, 06:30 AM
Dimensions =

13h x 16w x 17d

Two questions:

1. Is there a rule to the depth? Like a depth to width ratio limit?
2. If I change the port width to 1.25, will port noise be introduced?

The only room I have to play with a little is the depth, unless I change port width from 1.5 to 1.25.
I am befuddled...

05-07-2013, 06:47 AM
depth of box and port width are not relavent to one another. usaully about 15sqin/cuft of port area is good but what sub do you have? are you using any kind of port calculator to get the port length?

05-07-2013, 06:59 AM
Im just using Torres. The box is for an SA-10 d2, powered by an mbq onx1.1000d. The dimensions are tight because its going in a baby shoe sized Chevy Sonic hatch. Im trying to get tuning down to 34hz. The only way I can do that is if I come up to 18" on the depth or close the port width to 1.25 instead of 1.5, then shorten the length. I would much rather shorten the port width if possible.

Thanks for the quick response too btw.

05-07-2013, 07:15 AM
If your about 1.5cuft i would think you would want around 1.75" width. are you trying to avoid making an L port? i would think that 1.25" is not enough- the port is 11.5" high, correct?

05-07-2013, 07:44 AM
I just went back out and re-measured my hatch. I think I will be ok with what I came up with now. I dont know why I was confused lol. Its been a long day I guess.

This should work right?


05-07-2013, 08:24 AM
I could be wrong but since you have sub up port up checked, i think the depth (-1.5) would be the height limit on the port. Otherwise for 11.5 it would be a front, rear, or side facing port.

Atleast thats what i did when I designed my box

05-07-2013, 09:16 AM
I have no clue why those were checked. For some reason unchecking them made no difference.

05-07-2013, 06:37 PM
I think it's because volume and port length and area stayed the same. It all looks good to me. Remember to use lots of good quality wood glue