Bruce Edgar Midrange Horn for 2445

[ivica]

Thanks Morten for searching the article.
I´ve listened to a JBL 2397 the last days and I really liked it.
I´m going to build these in spring.
But actually I´m willing to rebuild the westlake audio-version,
also in walnut

HI Dr.db,

Some words that has been shown at the end of the Smith's paper are interesting form me, and I think that would be the differences between Yuichi A290 and JBL 2397

reagrds
ivica

[Dr.db]

Thanks again everyone for your big help, I really appreciate that!!


I believe a 2397 is not the ultimate horn, but still "better" than many other designs (like the 2380, bruce edgar, round tractrix, etc....).
A Yuichi would be better in the vertical-behaviour, but I think this wouldn´t be a major difference.


Regards,
Olaf

[more10]

I´ve listened to a JBL 2397 the last days and I really liked it. I´m going to build these in spring.

Good decision! You can build these with hand tools.

But if you have access to a CNC machine you can build much more difficult stuff. Matsj built these a few years back: Jbl Diy K2/Array .



They are now for sale: Jbl k2-9500

[Dr.db]

I´m a carpenter and I know a few guys with cnc´s.... Building difficult horns wouldn´t be the problem.

But I also like the flat appearance of the 2397 rather than the bulky look of a yuichi horn. They appear a bit threatening in a living room in my opinion...

[ivica]

I´m a carpenter and I know a few guys with cnc´s.... Building difficult horns wouldn´t be the problem.

But I also like the flat appearance of the 2397 rather than the bulky look of a yuichi horn. They appear a bit threatening in a living room in my opinion...

Hi Dr.db,

Unfortunately, for acoustic horn, visual outlook and acoustical behaviors are not usually "going in the same direction".
If You want to suppress the reflections from the mouth, mouth surface curvature has to be "Yuichi horn" look.
If you want to use the horn to lower frequency, the horn size would rise.
If you want higher frequency wide coverage then a kind of horn diffraction (in the throat, or in the mouth region) has to be applied, or multicell construction has to be applied,
on my opinion, the diffraction in the throat is better concerning the "imaging" of the sound.

regards
ivica

[more10]

or multicell construction has to be applied,

The construction of a multicell horn. This guy is not even a carpenter :-).