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jessie.dazzle wrote:

Once I am done with more of this project, I will make a 330Hz Tractrix to try in place of the upper mid 400Hz.

Hm, I wonder what would be the purpose to make 330Hz horn for you if you have 400Hz and a dedicated lower MF channel? The only reason to do it would be the fact that you experience specific problems with lower knee of your MF channel, do you?  If you are persuaded by the fact the Vitavox did 330Hz horn to use with S2 then be advised that the same Vitavox systems that uses S2 sometimes were equipped with 220Hz “harrow” horns.

Still, I think it absolutely unnecessary for YOU to look at what Vitavox did. All their design with S2 driver were two ways systems and you are, dividing the S2 ranghe to HF and LF, are in way more advanced situation.

I think the 400Hz was a good chose. Let see what changed will be if you go for 330Hz instead of 400Hz? You will be able to driver your MF little harder at it’s bottom - do you need it if you have own Lower MF channel? You also will loose very slightly top end of your MF driver and will have more narrow MF radiation patter. Also, you will have ~60mm larger horn that will make the entire height of your frame’s horns taller. Sure, nothing wrong to make another horn and to experiment if it is easy for you but I would persuade you to use only your tangible sonic motivations to navigate yourself instead juts blindly looking at what Vitavox did.

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