Horn loading of cones and domes drivers (i.e. not compression)

Jump to Latest
#21
It is actually dead easy. Mids as close to the HF driver as possible and bass as it fits, it does not matter much if further out. 3" drivers can get easily over 1000 Hz crossover even with center placed port. Build a cheap prototype and measure it. I used chipboard. The more difficult part is the crossover - easier to do with DSP, passive is doable, but difficult, at least for myself.
 
  • Thank You
Reactions: ginetto61
#22
Thanks a lot In the meantime i found the graph that shocked me

1729030162009.png

i cannot find the source
I am astonished by the effect of horn loading
i feel like i want to horn load my car engine
 
  • Like
Reactions: noamgeller, grindstone and AllenB
#26
GM said:
Well, with a ~325 Hz Fs/0.3 Qt, then its upper mass corner (Fhm) is ~2*325/0.3 = ~ Hz just as measured; a ln(2167/325)/ln(2) = ~2.737 octave spread.
Click to expand...
Hi ! Thank you very much for the very valuable formula that I don't understand
You mean that is possible to calculate the usable range from TS parameters?
I can measure them with the beautiful Dats v3 one of my most loved toys these days
The horn design will be quite critical I guess
But nobody said the the path to pleasure is easy
 
Last edited:
#28
This was one of the threads I was thinking of..

P

Thread '3 way MEH with a planar tweeter (GRS PT2522 tweeter, FaitalPro 3FE22 mids)'

As the test horn (https://www.diyaudio.com/community/threads/3-way-meh-with-1-4-cd-3d-print-and-cnc.383396/) progresses forward, I am slowly starting to think about the successor of it.

Here is some first Hornresp simulation, using 4x 3FE22 as mids and 2x Fane Sovereign Pro 12-300, sealed with a little EQ and a basic crossover:
1687344964763.png


The Hornresp records are attached. Depending on how the measurements on the first prototype will finish, this one will be built using 12 mm chipboard, since the final one will be most probably from 12 mm birch plywood.

It is meant to be 85 x...
  • Like

pelanj👍
 
  • Thank You
Reactions: ginetto61
#30
Thanks a lot Until now i knew only the rule of low cut a driver at around 2xfs Hz
finally i can measure the fs of a driver Next step will be to study REW well I understand is a very popular SW
I had some issues with my sound card I will ask for a sound card surely supported by the SW
 
  • Like
Reactions: head_unit
#31
Speedysteve7 said:
It is Multiway etc. DSP is your friend.

I just copied what was out there.
Worked brilliantly.

So well my 5 way individual horns (Le Cléach HF / Tractrix MF / Exponential LF) system was replaced by one MEH🙂

There are plans for smaller 2 way versions and build blogs here on DIYaudio of course.

Down to 200Hz with perhaps a 6" MF would be doable.
8" drivers with rear enclosure can see you down to 70 - 80Hz.
Then you just need a sub.

This is from the ATH4 thread.
3d printed!👍
I'm in awe of what they are doing.
I'm old school wood so far.

View attachment 1367878

You could have a cone HF and 1 or 2 8" LFs.

Don't be thinking these are only for PA. They sound amazing nearfield and hifi detail / vol levels. But with the single point sound source and if you go phase coherent on the XOs its another level.
Click to expand...
Is the bottom photo the rear of the horn pictured above it?
 
You must log in or register to reply here.
Top Bottom