in an attempt to try another Kickbin over X1s to maybe replace our HD15s, i simulated and modelled a small FLH. The Plan was to build a speaker that is half the size of an X1 Letterbox (56,9x50,8x69cm (WxHxD) ), so four Horns will stack neatly onto one to give a nice height for our Tops. Another criteria was a decent frequency response down to 60Hz, so we can use a but24 HPF at roughly 80Hz to meet the X1. 
After some time with Hornresp i came up with the following simulation for the existing Oberton 15B450 Speaker. (I simulated in eightspace, because the Horn will mainly be used in a stack of four on the ground or on just one X1 (so roughly on the ground))

   
This looked promising, so i spend some more time in Autodesk Inventor and put this simulated Horn in a wooden box :P My first design was this slotloaded one:
The problem with this is that there is no way to put the driver in, not enough place for the magnet in the backchamber, a lot of wasted space, and to much crazy angles on small pieces of wood.....so i came up with another idea in the following drawing:
Its more simple and doesnt look to bad. The driver can be mounted from the right side, has probably enough room (maybe after some minor changes) and is easily accessible. The only problem is now that i dont know how to put this correctly into Hornresp. I dont think this will change to much of the frequency response because the significant areas are nearly the same and the small loss in lenght should be well compensated by the virtual hornextension in front of the hornmouth.

My questions to you are now:
- how can i simulate this kind of hornthroat more accurate?
- is there another way of folding this horn better in the given space?
- can i get an extended frequency response on the high end in comparison to the HD15 even though there are two bends in the horn (we run the HD15 currently to 151Hz and i would like to get to 180Hz without the typical "honkyness"

Thanks in advance,
Julian

Use the Offset Driver option in the number of drivers field. You then set S1 to near enough zero (I think 0.1 is the lowest value it accepts), representing the very thinnest end of the "wedge" in front of the driver, with S2 being the sectional area in front of the middle of the driver.

Not sure about your other questions, sorry.

HTH,

David.

Looking at your measurement at first I thought the "ripple" at 133hz would be caused my the microphone, but the manufacturers measurements say it's near perfectly flat. From my understanding peaks in the response will be greatly smoothed out when the horn is used in multiples. The  last hornresp sim you posted does show a very small bump around 100hz. Maybe you could manipulate this to match your measurement and work back?

  

Does it sound muddy, resonative, hard to eq?

Try taking the speaker out, than knocking into enclosure. Any similarities?

I also worked a little bit on our new midtop design containing an 18S 15nmb420, and an 18S nsd1480n on the xt1464 Horn. But this also needs a good measuring Session, so there was not to much progress.

In the next two weeks i am busy studying and writing my bachelors degree, so all the projects will have to be paused.  After that the work can continue ans i will give you an update of anything interesting that happens :)

(The cables are fixed now, so don´t worry)

But since we liked the sound of the first one so much, we decided to replace our HD15 with two of the new ones, so we started building a second one  While building we listened to music with two X1, the first kickhorn (not finished) and a quick and dirty prototype of our new Midtop.

And today we finally painted a first complete layer of paint on one of them (the other one follows tomorrow). There is still another layer to come and then we will do a splatter coat when we finished the rest of our new cabs -> two more X1 and the new midtops.

wanted to ask if there is any chance for getting the plans for the cabs ? 

would love to build them myself for my kick section. 

greetings from germany 

Greets:)