Profile for SEOS horn

[Studio Au]

Hello,

I'm looking to model a 15"-20" SEOS horn, does anyone know of any software that will give me the profile with which I can attach a router and route the curve profile from solid wood.

Many thanks.

 

[Inductor]

I'm confused by your question...
1. First you need to read the profile with a laser or other input hardware. Unless you have it (3D profile) already downloaded to computer data.
2. Then you need the software, as you say, a CAD/CAM tool-like software, that is going to work (interface) in/with your machine/computer/table.
3. Then you need a program of your data that you INPUT from the previous reading (hardware) TOOL or from the spreadsheet you have, or someone gave you, with the data of a a 15"-20" SEOS horn already inserted.
Maybe this helps you better formulate your request. Regards.

 

[jzagaja]

In Solidworks there is equation driven spline where you can quickly define curve in H and V plane then draw input and output cross section and then loft surface.

 

[Studio Au]

I was thinking to construct them like this.

Or perhaps using the CNC.

But I need the software that i can put in horn's mouth and my cutoff frequency for it to print out the profiles shape.

 

[jzagaja]

Or you can 3d print from PLA or ABS and thicken.

 

[Studio Au]

Cost of 3D printing things this big is still prohibitive...

Do you know a way of converting a OSWG to SEOS?

Am I right in thinking the SEOS is a Super Elliptical OSWG.

Love your work with horns.pl by the way, would love to hear some too!

 

[jzagaja]

Draw OS curve in H and V plane with defined angle, add roundover, add throat shape, add mouth shape (superellipse) and loft surface, that's all.

3d print (material) is very cheap now.

 

[Studio Au]

Apologies, I'm not sure what you mean by H and V plane.

So if this is my OSWG waveuide provided through the Geddes spreadsheet.

An externally hosted image should be here but it was not working when we last tested it.

Do I keep the width and squish the height? or does the height change as well?


Looking at yours here, they in fact appear to be straight profile with simply the corners rounded to meet, am I right?

An externally hosted image should be here but it was not working when we last tested it.

 

[jzagaja]

First you define H plane (horizontal) with OS curve, desired width, driver angle and then V plane (vertical) - H plane dictates length. Ladt step is roundover and superellipse. Height always change.

 

[Studio Au]

Ah, ok makes sense.

Think I was getting confused with E-OWSG

An externally hosted image should be here but it was not working when we last tested it.

How do you model yours, they are fibreglass around a mould?

 

[jzagaja]

They are fiberglass or poured composite (casted).