what works with an X1

i am slowly building an X1 for use in a dj setup, and i am looking ahead into plans for what midbass cabinets will work well when used with this subwoofer.  The consensus seems to be "hd15!" but i really dont want a horn, and i REAlly dont liek the way the hd15 looks.  I designed a cabinet that pulls an spl of 103db/w/m flat from 70 hz to 440 hz.  though id need a ratio of 3 of my design to 1 X1, id still be getting way better frequency response for midbass. Going that high has a ripple effect.  midtops crossed over at 440 hz dont have troubles with bass messing up the midrange drivers, so in theory i could use 6 inch drivers and some horns to build tiny midtops, all around for a really small but really loud system.  does anyone know of a reflex design i could construct to pair with the x1 and get the same overall system spl response using fewer or smaller cabinets?  perhaps i need some enlightenment on the difference between horn and reflex enclosures.

Or a compact ported dual 15(v shaped front behind grill to reduce size) with a highish tuning frequency for powerhandling and sensitivity-easily capable of x1 output.

Or like above, put a grille on a hd15!

A 6" mid will struggle to keep up, maybe dual 8" with the horn mounted in between? Although this will still really only have the same output as a good 12/15?

Why not just build a dual 12/15 cab and horn? If you want to keep it small it'll be better that a bunch of different cabs and amps to run them!

ahh yes... the dual 15" with v-shaped front is exactly the cabinet i envisioned.   i have a question about this design though, because this is something i have no clue how to calculate---  my current design has a V shaped front, but the two ports are going to be situated at the back of the V toward the rear of the box.  im assuming my V will have a slight horn effect, which brings me to my question... will putting ports at the back of the two horn regions effect phase and and stuff liek that?  I suppose a better visual is that it is an M when viewed with the top of the box removed, with the bottom of teh M facing out and the top being the inside of the cabinet.  if i put two ports in the rear crevices, will that be better than one port in the very middle up front?  if this makes no sense then i will make a drawing and scan it tonight, but if someone has advice then id love to hear it, im totaly stumped.

now im thinking... has anyone ever tried porting a speaker like the 1850 horn on the inside at the beggining of the horn?  what exactly would that do?