View Full Version : tunning question

02-18-2010, 07:10 PM
hey guys i have a question. i have a box i built in my 97 accord and i am trying to find out what i have it tuned to. the o.d. is 33x15x28 port is 6.25wx13.5hx19d. i have 2 APX 12s in it slot port on drivers side sealed off from trunk. any help would be appreciated. thanks i almost forgot it has a double front baffle which makes the depth 28

02-18-2010, 07:44 PM
6.34ft^3 gross
-.96ft^3 for port
-.4ft^3 for subs
~5ft^3 tuned to ~39hz

Might be a little different if there's bracing taking up some space...I'm also just guessing on the sub displacement, but it should be fairly close. Also, this is assuming the 19" port length is from the back of the port to the face of the double baffle, so only 17.5" of it is taking up space in the box.

02-18-2010, 08:21 PM
thanks man so what would i need to do to make it 41hz. i do have bracing so will that lower tunning

02-18-2010, 09:18 PM
It'll raise the tuning a little. Taking away air space raises tuning given that the port stays the same.