you have an expedition right, you wanna slam 3 WOs with 15 in there, without the back seats I bet you can do it.

What I would do first is to measure how wide the back is at the narrowest points, so between the wheel-wells.  Whatever that measurement is, make the WOs that measurement, Y, YxY x 19 or so.  then take the 3 WOs and lay them at angles pointed towards the front or back, whichever is louder.

Otherwise, set the WOs up in a triangle, one on bottom and the other two tilted on top.  I don't know if you will have the heighth though.

I drew some crappy pictures, although my mastery of Paint is Increaseing ten-fold daily.



If you go the route of angleing them towards the fron or back, try to angle them as much as possible, or as close to flat.  This will give you more air path above them, although you might wanna try different angles cause that could effect performance.

thanks  J_Rock
I never saw the pictures of the ported version. It was not what I thought it would be.

GEX...you know what me and my wife were thinkin about how to port it. we came up with very close to what the pics show...but...im like naw that couldnt work because of the phase difference...but now you show pics and i guess it does work...

from what I ahve read so far on the porting of the WO is it is good for SPL only.
And I agree on the phasing and 60's view of the whole thing.
but........ I think its possible to make it close to the SQ with enough trial and error ( mostly error )

Sometimes the science of it is not the whole story.
also lack of funds makes a person try the silliest things....

I just bought an plate Amp today for really cheap out of the box.  it even came complete with a sub and box. Cheap box, cheap DVC sub. decent 100 watt plate amp. cheaper buying the whole thing than just the plate amp.


strange how things work out sometimes

if you measure the distance from the drive to the port opening in the horn mouth you get 1/4 the wavelength of the highest freuency total wave addition occours at.

So you measure, then tune the box to that frequency.  Not only making the front and back waves add, but also oncreasing efficiency at the frequency at and around which they add.  If you were gonna go real big you could aim to tune the entire thing at your vehicles transfer fucntion frequency to get even more bass.

I would suggest just 3 WOs though for sure.  port them if you can figure out the math and what not otherwise just let them sealed.

My WO has increased my 2 drivers rated sensitivity by 19db at least.  (Drivers max power = 2^[X]; X x 3 = Driver's proposed SPL at max Wattage.  My wo puts out 19 db more than that SPL at half volume on the dial. No way to test further...)

i have a tightly squeezed 50" (max width)

ok but doesnt the port need to be tune approx 5-10hz highter so that they dont cancel...or would you have to have the ported camber 1/16 wavelength if you have 1/4 coming from the mouth? im just thinking of distance and the timing...i havnt done the math yet.