Subwoofer enclosure

I have two Gauss 4880A
What is the best enclosure for the lowest bass and punch using (1) speaker for each enclosures. Please help!
Thank you.

Fs/Qes 96

VAS in liters 566.4 or 20.0 cu ft

Qts 0.2173 or .21

Fs (Hz) 23

Sen@1 meter 97

RMS 400W

Xmax 5.3
8 Ohm
18”

only a few parameter drv can't calculate with horn speaker. i don't sure that can work with the k bin likes the pics which my friend did.

Thanks.
With an equivalent volum of 566.4m or 20.0 cu ft will the back of the speaker need 20.0 cu ft before the 1st bend or shelf?

u meant that ull try to use 20.0 cu ft volume.? it may be less of energy. i just try to sim with the k bin. it can work in this cab. u can adjust to change the back volume to 110-120 litre. the size will not too big. hope this help.