1.1:1 6th Order

[Malandrin4o8]

I was wondering if a 1.1:1 6th c pillar wall would sound good in a 2003 Yukon with 2 18s powered by a taramps md8000. I will post a picture of specs.

[Joe X]

What subs are you using and where did you get those box specs?

 

Generally speaking c pillar walls are weaker than their b pillar counterparts.

[Malandrin4o8]

They are 18” Adire Audio KH3001. I found some premade box designs online from ituneboxdesigns. It’s not a spl vehicle. Just my daily driver. Not sure if a regular sub up port back design would work best 

[Joe X]

They do not list t/s parameters for those subs, all they list is box specs:

 

Overall Diameter     18.50″
Cutout Diameter     16.75″
Mounting Depth     12.25″
Driver Displacement     .26 ft^3
Sealed Enclosure     3-6 ft^3 Net
Ported Enclosure     6-8 ft^3 Net

 

Without parameters can't tell you what's best for those subs, all I can tell you that a bandpass would be a really big box.

 

As for ported only a generic design could be produced as parameters are necessary to estimate port area and while generally tuning is a matter of preference sometimes driver behavior is a factor, that is why generic designs can often miss what is best for a driver,

 

Sealed is pretty straightforward, I would just avoid going below 4 cubic feet per driver.

[Malandrin4o8]

I have the parameters that I I saved from when I got them years ago.

[Joe X]

With an Sd (effective radiating area) of 481.69 square centimeters, those parameters belong to a 12" sub not your 18s

[Malandrin4o8]

I might have posted the wrong one. I had other subs from them and deleted the specs. I will try to email them hopefully they can give me them. Box I had on them before was 9.49ft3, tuned to 27.31hz with 135in2 port area. It sounded ok but I definitely feel like it was tuned too low and too small volume.

[Joe X]

If you can't get them you can always measure the parameters if you can put money and time on it. Probably not worth it to everyone since they give box specs, you can just experiment a bit to get what you want.