Wow, wow, wow. They look super nice.
Printable View
Wow, wow, wow. They look super nice.
That was the point several of us were trying to make when discussing some of the H9800 horn clones made by a few different forum members... a seemingly small change, especially in the throat area, can make quite a difference and the correct geometry of the H9800 is far from simple to create. ;)
What about the tweeter horn you are using? Isn't it optimized for the K2-S9800s higher tweeter position?
Widget
That new throat doesn't look right. Take a look at this older thread,
http://www.audioheritage.org/vbullet...ght=QUICK+4430
Rob:)
I was thinking that too... but it could be due to the rendering. A wireframe might be more instructive. I've posted this before along with the .igs data to create it and I assume that is what Guido is using as a starting point, but here is a view that shows that the transitional fillet looks different than Guido's rendering.
Widget
It will be right in the end :)
You need to see it. It can't be showed in pics or rendered CAD drawings. It's a question of the viewing angle.
Below is original EV2, not mine
Hello Guido
That red line doesn't follow the contour, the white line does. That's an Array horn not a 9800. You need a close up of the transition between the throat and the horn. The white lines are the transition in the Array Horn between the outer horn and it shows the 2 piece construction on the throat.
Rob:)
I know that Rob it was for clarification only as there is no real line in the contour. See the EV2 closeup I posted. Here the line is also not as my red line but looks like my red line (red wine:confused:) . Anyway, thank you for participating and trying to help! I'm proud to get you folks back to the forum at least for a few days :D
The adapter is intended to be a parabolic horn, and I know for a fact that the black block is the one half of a parabolic horn, because I did the mathematical modelling and made the CAD drawing that was used to mill it.
Measurements will show which is the better adapter.
Squaring the circle (http://en.wikipedia.org/wiki/Quadrature_of_the_circle)
while retaining a parabolic expansion is anything but trivial,
and I'm intrigued to know whether my efforts have paid off.
We will know when Guido has made measurements with the green adapter (measurements made with my adapter are already available in various threads).
Jan, thank you for participating.
Nothing wrong with your adapter. I even have a perfect filter for it. I just want to compare it with the original Everest 2 filter and the matching adapter.
If I have made the comparison we will know if your efforts have paid off.
I hope you guys nail it. If it works with the Everest Crossover it's a done deal.
Rob:)
This is about the best in room response I ever measured!
Normal room
No treatment
Very insensitive to room modes
Flat within +/- 3dB down to 10Hz :eek:
101dB SPL :shocking:
Reworked EV2 LF1 and LF2 crossover for usage of 1500AL's as worked out here
http://www.audioheritage.org/vbullet...00-h9900-h4365
I'll post full schematics when finetuned.
Thanks!
I remember all of those doubts about the bass capabilities of the Everest ;)
____________
Peter