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In the Forum: Horn-Loaded Speakers
In the Thread: Musique Concrete horns
Post Subject: A wild and racey mustang...Posted by Romy the Cat on: 6/12/2007

 RonyWeissman wrote:
Got my new Le Cleach tractrix horns (320hz) for the Vitavox S2's.  I'm x-ing over at 600hz with 2nd order 12db/Octave which I know is barbaric for you but it is all I have for the moment.

Why is it necessary barbaric? I do not follow the logic…. Your 600hz with 12db/Octave looks like a rational point for 320hz horn. You will eventually play it a little up and down it all depends of how Cleach’s will handle it  and what type of crossover you will select but I feel that you are not far from where you should be.

 RonyWeissman wrote:
With the new horns the S2s are putting out much more HF than with my old tin can rectangular models, though the HF is not as clear as I would like.

Can you define what do you mean “HF is not as clear as I would like”? Do your S2 gaps are sterile and cleaned? What kind diaphragm you use, most likely with metal sustention if you cross it at 600Hz? Does diaphragm is aligned properly? Do not forget that improperly aligned S2 cone will have sharp tone with no bloom at lower MF – do not over-tight those 6 alignment bolts – never a good idea in vintage compression drivers. Generally if you have with 320hz horn have too much HF then it is a good sign. Also, I do feel that Le Cleach might be very slightly brighter then Tractrix as they, it look like are very slightly shorter. One more thing: do not point the horns to own fate but point them at 10-15 degree to your outer shoulder… The metal sustention cone is VERY “atrocious” and the new metal suspended S2 might sound like a unridden horse….

 RonyWeissman wrote:
I will have to rework my midbass, plans are already under way there.

Make sue that whatever driver and the topology of the bass enclosure you will select it should be able to sound more or less confidently to ~800 if you go with the second order.

 RonyWeissman wrote:
I don't plan on using tweeter for time being…

I would not worry about it for now. Stay with the naked S2 unit YOU FEEL that you grew up from that sound and until YOU IDENTIFY TO YOURSELF that there is a room for something else above S2. Then, only then experiment with tweeter.

Rgs, The Cat

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