Hi,
Would it be possible to receive a copy of this spreadsheet please ?
Rioux.hugo@gmail.com
Many thanks,
Would it be possible to receive a copy of this spreadsheet please ?
Rioux.hugo@gmail.com
Many thanks,
The OP said (post 12) that his horn didn't work as expected, so it was bigger than it needed to be:
Hornresp can be used to generate variants of the much-sought spreadsheet. Here's how you'd clone the OP's horn:
(1) enter the values
Flare rate is given in post 1 as 183Hz
Throat size is 20cm^2
- or arbritrary, really, depending on your driver and adapter.
OP used a 2445, so to clone his horn, it ultimately has a 2" diameter or 20cm^2 throat
Total mouth size is roughly 3375cm^2
- One cell is illustrated in post 3** as about 15x15cm per cell (but this is not really critical; 20x20cm would also work). With 3x5 cells, each 15x15cm, mouth is ~45x75cm or 3375cm^2
These three numbers are all Hornresp needs. For me, it spits out:
Horn axial length as 77cm.
(2) Export the horn shape
Calculate the horn, then from the Schematic Diagram window, click
FILE - EXPORT - HORN DATA - RECTANGULAR HORN - EXPORT
(3) Spreadsheet it
Next, copy and paste that data to a spreadsheet. Add a couple more columns to divide the dimensions by however many cells you want in your multicell. Done.
For a JBL 2445 and a 500Hz crossover, I'd suggest a smaller horn; 12x12cm cells and 50cm length models well for me. My simulation is pictured. The values I used for the 2445 are partly guesswork, and the sensitivity seems too low, but the LF response is about right.
*unless your driver is more robust / goes lower than the JBL 2445
**funny: I have seen this post before, but only just realised what the disc is. I saw them live last year. Good cheesy fun.
Therefore, if you're a perfectionist like the OP, you shouldn't simply clone the design.*
Hornresp can be used to generate variants of the much-sought spreadsheet. Here's how you'd clone the OP's horn:
(1) enter the values
Flare rate is given in post 1 as 183Hz
Throat size is 20cm^2
- or arbritrary, really, depending on your driver and adapter.
OP used a 2445, so to clone his horn, it ultimately has a 2" diameter or 20cm^2 throat
Total mouth size is roughly 3375cm^2
- One cell is illustrated in post 3** as about 15x15cm per cell (but this is not really critical; 20x20cm would also work). With 3x5 cells, each 15x15cm, mouth is ~45x75cm or 3375cm^2
These three numbers are all Hornresp needs. For me, it spits out:
Horn axial length as 77cm.
(2) Export the horn shape
Calculate the horn, then from the Schematic Diagram window, click
FILE - EXPORT - HORN DATA - RECTANGULAR HORN - EXPORT
(3) Spreadsheet it
Next, copy and paste that data to a spreadsheet. Add a couple more columns to divide the dimensions by however many cells you want in your multicell. Done.
For a JBL 2445 and a 500Hz crossover, I'd suggest a smaller horn; 12x12cm cells and 50cm length models well for me. My simulation is pictured. The values I used for the 2445 are partly guesswork, and the sensitivity seems too low, but the LF response is about right.
*unless your driver is more robust / goes lower than the JBL 2445
**funny: I have seen this post before, but only just realised what the disc is. I saw them live last year. Good cheesy fun.
Attachments
Horn Spread sheet
Hello TractrixFreak,
I am interested in building a multicell horn based on this thread.
Could you please email me a copy of the spread sheet and any other information important to have a sucessfull build ?
My Email: 3399tdr@gmail.com
Thanks,
Tom in Lafayette
Hello TractrixFreak,
I am interested in building a multicell horn based on this thread.
Could you please email me a copy of the spread sheet and any other information important to have a sucessfull build ?
My Email: 3399tdr@gmail.com
Thanks,
Tom in Lafayette