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View Full Version : Sub up port back in an suv



Forrest Gump
12-29-2008, 04:00 PM
Is this generally louder?
Better SQ?

Also how much port area should I run (18"DR)

RidnClean
12-29-2008, 04:01 PM
from test, yes the sub up/port back is loudest.

Forrest Gump
12-29-2008, 04:45 PM
Sweet

mcsoul
12-29-2008, 04:57 PM
18" DR = IA Death Row?

oops, it's in your sig sorry.

Adnan
12-29-2008, 04:59 PM
works great for me in the windstar!

i since move the port facing inside and the subs up (was short on wires)
and it doesnt sound as great...there is far less rattling from the hatch but
weaker bass

mcsoul
12-29-2008, 05:03 PM
110 square inches or so; or 2 6" areo ports.

Forrest Gump
12-29-2008, 05:06 PM
110 square inches or so; or 2 6" areo ports.

wouldn't 2 6" aeros be like 60 square inches

mcsoul
12-29-2008, 05:08 PM
wouldn't 2 6" aeros be like 60 square inches

areo ports are more efficient at moving air than rectangular ports.
They can use less area and (therefore) less depth to achieve the
same Mach rating (whistle/port noise factor) and tuning.

Forrest Gump
12-29-2008, 05:11 PM
Oh. Ok.

What about corner loading the port(s)?

mcsoul
12-29-2008, 05:17 PM
You could put the areo ports, if you went that way; low, rear firing and equi-centered (not right next to each other in the middle). You would also want to give the port 6-8" of distance between the box and the rear hatch of the SUV. Basically, your loading off the back wall, then up along the roof line primarily, and secondarily into the corners and back along the sides.

roarzorz
12-29-2008, 05:18 PM
In a previous setup I gained 1.5db subs up port back over subs and port back. In my current setup I gained 0.5db sub up ports to the driver's side over sub up ports back. This doesn't work in all circumstances though. Subs up and ports back is a good safe route. I agree that two 6" ports are perfect for that sub.

Forrest Gump
12-29-2008, 05:27 PM
Thanks peeps
:)

mcsoul
12-29-2008, 05:31 PM
Thanks peeps
:)

No problem. :)

6 cubes is not a huge box, so you need to look into whether
it is better to build the box with a gap between the side walls
for the wave to come back forward, or if you want to force most
of it up by building the box exactly wide enough to fit in the back.

I'm actually not sure which is better.

hatemonger
12-29-2008, 05:51 PM
No problem. :)

6 cubes is not a huge box, so you need to look into whether
it is better to build the box with a gap between the side walls
for the wave to come back forward, or if you want to force most
of it up by building the box exactly wide enough to fit in the back.

I'm actually not sure which is better.

huh. that's a new one on me. learn something new everyday.

Forrest Gump
12-29-2008, 05:51 PM
Hmmmm

White Ram
12-29-2008, 05:57 PM
Subscribed for answer................Patiently taps foot. ;-)

J

Lakota
12-29-2008, 06:46 PM
In a previous setup I gained 1.5db subs up port back over subs and port back. In my current setup I gained 0.5db sub up ports to the driver's side over sub up ports back. This doesn't work in all circumstances though. Subs up and ports back is a good safe route. I agree that two 6" ports are perfect for that sub.

You're not the only one;)

Lakota
12-29-2008, 06:49 PM
One thing that's also very important that hasn't been taken into consideration is the type of SUV. My team has 4 suv's on it (2 Explorers, a Blazer, and Jeep Cherokee) and not every one of them wanted the same firing position.

Forrest Gump
12-29-2008, 10:20 PM
Sweet.

I'm thinkin I'mma just build a sub up port back box and turn it until I get the best result.

Thanks!

Oh and how big should I build my box?
It is gettin pretty smelly in 6 cubes, thinkin about shrinkin it to 5 to handle the power better; but won't that hurt my debeez?