Help interpret graphs?

[hm]

Hello,
forget the JX92 for a Kornett.

 

[serenechaos]

Here's the input screen for Hornresp. I tried to make it roughly the same as what I did in MJK's worksheet.

don't know if you're still playing w/ this but you have listed...
amp output resistance as zero ohms?
flare section one is conical, with flare cutoff frequency of zero?
(section two is exp, w/ cutoff of 54.39)
rear chamber volume is zero,
rear chamber length is zero,

it says your using a vented rear chamber;
and the vent port has an area of zero (that would make it a sealed chamber),
and the port tube length is zero (as above).

And the throat chamber is 900cc, with 350 cm avg cross section area.
don't know exactly what you're building...

i played w/ it a few minutes, changed a few things around but working w/ same mouth size (which will still produce a lot of ripple);
dropped s1 (throat) to 15.25,
s2 to 450 for mouth
con to tractrix, (which calculates out to 279.41 total)
set f12 @ 55.00
no s3

changed:
Vrc 1.52
Lrc 12.46
Fr 1
Tal 3
Vtc 64.39
Atc 78.00

gives 60 - 1000 hz w/ ~ +/- 5 dB ripple.

open the mouth up to 4500 & get near 10 Hz more extension on the bottom, top stays about the same, but ripple goes down to about +/- 1dB...

just playing around...

 

[markusA]

To get the ball rolling.
Here's another simulation that's doable.
To me the graph looks bad.
Tell me what you think of it.

It's simulated with diffraction and room response.
15 degrees toe-in, 2' to back wall and side wall.