New Construction, just wanting to confirm an idea.

Im a little lazy, so IMO, the curve seems a little above my ability, so instead of whinging about doing it, iv come up with an idea to do away with it.

My idea of the HD15 is as a gap filler between my Jbell SS15 subs and a Eminence Delta12a loaded reflex cab (my tops)

so heres a picture of what im intending.

can i just use a flat "curve" and have a horn tweeter in the front of it? 

i dont need low bass at all, just from about 100hz> but also helping the tops with the mids as well, as theyre quite a smooth sounding speaker, but also adding to the overall sound. 

so my setup will be this, 

2x delta tops  on 2x150w passed at about 150-200hz

2x HD15 on 2x350w passed at about 80~hz

2x SS15 on 2x1200w  + an extra SS15 with a 12inch driver and 600w

its going outside, in the bush, playing dance music (mostly Psytrance) to about 100people

was mostly wondering if it will affect the output much.  the sealed part will be slightly bigger, and i plan on putting the woofer on the "front" side of the baffle, with an access panel on the outside of the rear, which will also increase the throat chamber a little. so it will be a fair bit different from the actual HD15 as far as accurate specs go, but overall should be sufficient for what im looking for.

what do you all think?

besides having a near perpendicular front panel, where mine is actually going to be perpendicular, the slope of the 2nd section could certainly be the same as that.

over such a short horn length will it really make that much difference? i genuinely dont know, so if you can help me understand the difference that it will make, i will be much more enlightened.

thanks

it was just an idea, and apparently a bad one. i really didnt think that the sound would be that badly affected by having a straight expansion vs a curved expansion.

especially after reading this.