S3W15 ported box second opinions

[Bassesloaded]

been trying to design a slot ported box for a Cadence S3W15-D2. right now its in a small sealed prefab bout 1.5-19cuft

I tried using BB6 and winisd but no option for slot port. also I don't have all the parameters for this sub.

I have a flier with a lot of info on it u can find it here or here.

they recommend a 2.75cuft ported with a tuning frequency of 45Hz.I think that's proly a lil higher than wut im looking for.

so I called cadence to see wut else they might recommend for me. i said i love the output but i want it to be cleaner sounding. I told em I wanted to get a lil bit lower with the low lows. lol.

I was told a 2.8-3.5cuft sealed box is wut I would want.

info i received from matt at cadence that wasn't listed approx:

"xmax peak to peak=1.7in displacement=.15 approx."

Im not sure that's what i want, cause I like the sound of a ported box.

So i used these calculations to determine a box size that may be suitable.

here is my results

vas=61.772
qts=.440
fs=35.465

vb=20*.440^3.3*61.772
vb=82.2650736474
fb=(61.772/82.2650736474)^0.31*35.465
fb=32.4510368418
f3=(61.772/82.2650736474)^0.44*35.465
f3=31.2646434208

so based on these calutaions i used torres to get approx dimensions for everything.

then used sketchup to model it.

im not one hundred percent this is how it should be constructed.

anyway this is what i have come up with since Monday. do u think this box will work?

did i f it up some where?

what would u recommend?

[Bassesloaded]

I was just talking to a friend about my design. He said i messed it all up. According to him the the port is cutting into the box space. Apparently i should have added the port measurements to origi.al box dimensions. So it sould 26.25" instead of 23". Is this right?