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cv wrote:

The acoustic transformation's probably done by the time the wave reaches the throat.

Yes, it is. If we loom how the S2 internal channel done then it would clearly indicate the it should not be a great tweeter but what whatever reasons it is. Go figure…

cv wrote:

I'm currently running *one* S2 barbarically, while tweaking a few things. It's x/o'd 1st order before the amp at 500Hz on a 340Hz JMLC horn. Btw, the JM flare has a "T factor" parameter that can be used to control how open the flare is - larger T, shorter horn - you may be able to produce a horn that loads the S2 correctly down to 500Hz without sacrificing top.

Are you saying that the JMLC curve could be shorter then tractrix to the same flare rate?

cv wrote:

What you really need Romy is to find someone who will build 2 scale models of the S2; one twice the size for midbass and one half the size with electropolished phasing slits for tweeter duty, stick the standard S2 in the middle and you're done...

Here we go! Not we are taking!!! I would not need the S2 tweeter and what it dose now in 400Hz horn is perfectly enough. I would go only for the midbass S2.  Something with 6” cellulose diaphragm, low to medium compression, 3-4” throat, >2T in the gap and with Fs around 80-90hz. Something similar to the Community M4 compression driver only that would sound good

Ok, now I am officially hallucinating..
The caT

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