Found this site

[ebijma]

Found this site on full range drivers.
Much information on a sort of spiral horn speaker design.

Like the idea of this speaker builder.
Don't know if this design is any good.
Maybe some of you members know.

http://www3.ocn.ne.jp/~hanbei/eng-intro.html

Erwin

 

[Ropie]

I almost made one of his designs once, though I was eventually put off by the thought of trying to make a 3-D spiral horn. However, I think for someone wanting to try a horn on a small scale, some of his designs would be excellent.

The links page is very interesting too.

 

[jdybnis]

It looks like he could use some stuffing in the horn. From looking at FR graphs, the horn mouth has a lot of spiky output at HF. But I don't have any experience with horns. Maybe that would create other problems.

 

[rho]

I came across his site when looking for interesting horn designs for some TB W3-871S drivers.

I'm planning on bluilding the Helix H-88.

Now I got realy interested when reading about the results he got with the 6" HiVi speaker, used as a subwoofer.

Has anyone got an idea how I could design my own spiral horn subwoofer for a driver of my choice?
What about box-volume? Do I follow the formula for calculating an Helmholz resonator like he started out?

Anyone got Mr. Masaaki Takenaka's e-mail address?

 

[Nelson Pass]

It looks like he could use some stuffing in the horn. From looking at FR graphs, the horn mouth has a lot of spiky output at HF.

They all do that. Those curves are quite good.

 

[jdybnis]

Nelson,

I just read Pt. 2 of your audioXpress article on the Kleinhorn. It was a great read. Thanks!

rho.

There is a mailto link at the bottom of the front page of the site.

 

[rho]

Well, have you ever.... Seems I missed it.
Thanks for pointing me in the right direction, jdybnis.