Westlake style horn drawings?

[EvilFuzz]

Hi people!
I spend 2 evenings in search this drawings, but can't find something concrete, except pictures of Mr. Widget's very beautiful work.
Can anyone help me with my search?
And is Westlake horns have many difference as compared with original 2397?

Thank you in advance and sorry for my English,
best regards,
Kirill aka EvilFuzz
Sun Flower Sound rec. studio, Russia

[yggdrasil]

AFAIK they are close enough to identical except from the obvious differnce in the mouth.

There are several threads with the 2397 and other smith horns:
http://audioheritage.org/vbulletin/s...ead.php?t=5454
http://audioheritage.org/vbulletin/s...highlight=2397
http://audioheritage.org/vbulletin/s...highlight=2397
http://audioheritage.org/vbulletin/s...ght=smith+horn
http://audioheritage.org/vbulletin/s...ght=smith+horn

[EvilFuzz]

AFAIK they are close enough to identical except from the obvious differnce in the mouth.

Yggdrasil, thank you so much!
I read this links and understand about identically of vanes and other, but I can't find Westlake type lips profile nowhere...

Regards,
Kirill

[yggdrasil]

Try a 45 degrees profile.

[Mr. Widget]

Try a 45 degrees profile.

As I recall it was close to 45°, but not exactly. I have seen a number of people wing it and they all seem happy with their results.

Yggdrasil, thank you so much!
I read this links and understand about identically of vanes and other, but I can't find Westlake type lips profile nowhere...

For years I was hesitant to post my CAD drawings of the actual Westlake profile as I thought I might make a few more... but as time goes on, I know I am not. I have kept one pair for my own collection and that is enough.

Give me a day or two and I'll convert my CAD drawings to pdfs and post them here.


Widget

[EvilFuzz]

Thanks, Mr. Widget! It will be invaluable help for me... Many thanks!!

Regards,
Kirill

[Mr. Widget]

Here you go. I hope these jpegs do the job... that older CAD software doesn't export conveniently to pdfs.

This first drawing shows the differences between the JBL 2397 horn and the early Westlake variant. I have never measured the later Westlake horn that has an inner height dimension of a little over 2". Also I do not know if Westlake made their horn different from the JBL for some sonic reasons, a practical manufacturing reason, or that they simply were sloppily hand built and the particular horn I measured was slightly different from the JBL.


Widget

[Mr. Widget]

Top and Section views of the Westlake horn.

[Mr. Widget]

I was able to convert the file using an intermediate translator...


Widget

[KCCT82]

Oh my... I have always wanted these but reluctant to ask... THANK YOU Mr. WIDGET~

[eso]

I was able to convert the file using an intermediate translator...


Widget

Mr. Widget, could you send me the CAD file? I have software that can read .dwg and many other cad formats.

I'd like to have that for my archive.




eso

[EvilFuzz]

Wow, Mr. Widget!! Thanks! THANKS!!
Now I can start my first big studio monitors project

I was able to convert the file using an intermediate translator...

This drawing scaled 1:1 and can be used like profile template, as I understand? Are vanes profile absolutely similar with 2397?

And I have a question about drivers...
I can't find 2440 or 2441 in Russia; delivery from the USA will be too much expensive and take much time (our postal services are collapsed now, unfortunatly), but my friend can give me a pair of Altec 288 or 299, for my choice... What Altec drivers do you recommend for these horns?

Thank you one's again,
Best regards,
Kirill aka EvilFuzz

PS: when I start making horns, I'll post pictures of working progress and results

[Mr. Widget]

This drawing scaled 1:1 and can be used like profile template, as I understand? Are vanes profile absolutely similar with 2397?

Yes, and yes.

There is a thread where someone posted a very clever way of making the vanes. I used a CNC myself.


Widget

[EvilFuzz]

There is a thread where someone posted a very clever way of making the vanes. I used a CNC myself.

Maybe this: http://audioheritage.org/vbulletin/s...9&postcount=13 ?
CNC is absolutely perfect way, but I haven't access to it. Only my hands and Festool equipment)

And what you say about Altec 288 or 299 for Westlake style horns? I'm just newcomer at Altec/JBL bailey

Thanks,
Kirill

[eso]

Maybe this: http://audioheritage.org/vbulletin/s...9&postcount=13 ?
CNC is absolutely perfect way, but I haven't access to it. Only my hands and Festool equipment)

And what you say about Altec 288 or 299 for Westlake style horns? I'm just newcomer at Altec/JBL bailey

Thanks,
Kirill

You could just as easily make them by hand if you know how to work accurately. Make template for reference, and make the vanes as one long piece of baltic birch ply. Using very sharp hand planes and using the laminations in the ply as reference points to keep the cuts true.

Once the full length piece is shaped it can be veneered if desired or finished as is. Then just cut the vanes to length using a table saw with a miter gauge or a miter saw. Remember to wrap the areas where you're cutting in masking tape to eliminate tearout from the saw cut.

This is how I made the forms I use for the little Urei coax horns in my avatar, and also how I made not only the vanes, but all of the parts of the Yuichi horns that are mentioned in the TrueXtent diaphram thread.

For making a pair of horns, I could probably make the pieces this way before I could have the jigs and set-up for the router done.

Now, if I were going into production I'd do the set-up as it would be a good move for higher volume.

my 2¢


eso