Tweeter Suggestions for Three-Way Horn Speaker

[oltos]

This can make them sound bright depending on the room. The bottom line is you have more HF energy in the room and more even coverage.

I know it's a lousy sketch but from what you can tell from the dimensions and my notes how well might my room work with Docali's NicoB's, the TH-4001 or other CD horns for a two-way?

 

[Robh3606]

I know it's a lousy sketch but from what you can tell from the dimensions and my notes how well might my room work with Docali's NicoB's, the TH-4001 or other CD horns for a two-way?

You are asking questions no one can answer for you. You have to make a decision and make the best out of what you get. Even if you could audition them before your decision, in your room they might be different. Always a crap shoot. Building your own DIY you won't know until you power them up and listen.

Rob 🙂

 

[weltersys]

But if a consensus were based on the commentary on that page it would seem to support your statement. That said, would I still prefer a horn with a wider coverage pattern; that is, one with this kind of directivity?

A "consensus" (a general agreement) of comments by other individuals, if there was one, gives me no idea of what your preferences are.

Docali said his horns won't be available until next year, so clearly not an option. But how much would my room pose problems with utilizing horns with these patterns?

Your room "problems" are independent of horn patterns.

As an opportunity to hear a system with the # 1689 horns is quite improbable, please try to provide a general subjective listening comparison of the ES450/B&C DCM50/Fostex T96A and the 1689 horn either with the RCF ND350 used in your review or the whichever driver you think would best compete with Glen’s Midrange/HF combo.
To that, Troy instead first asked for that sketch of my room. Then he proposed:

Hi Gregory, I've recently received an order to custom design a 2-way using the Altec 416-8B with the ES-600 Biradial and newly developed SB Audience 75CDN-T.
My thinking is that the Altec will do well with a first order crossover at 1.2kHz since it is so well behaved in the midrange. First order will result in great soundstage depth as well as keeping the overall subjective sound have zero harshness. I am particularly sensitive in the 1-2kHz region and I cannot tolerate any harshness.
I wanted to reach out to you and see if this would be of interest to you for your project.
Here's info on that horn: https://josephcrowe.com/products/es-600-bi-radial-wood-horn-no-1978

Not like Docali's horn and no specified driver, but how would you evaluate it?

The ES-600 has ~160degrees dispersion at 2kHz, dropping to ~ half that at 10kHz.
Your Altec is ~90degree dispersion ~1.2kHz, so a first order crossover will result in a narrower pattern in that range expanding to 2kHz, then contracting above.
Not a pattern I would prefer in any room, and I don't find low order crossovers to increase soundstage depth compared to higher orders.

In any case, when I reply to Troy I would have to include this quote from Pierre as follows
…. But I would lean towards the TH4001 for your application, and towards the ES600 for a more compact three way that has a smaller midwoofer.

I agree that the HF dispersion pattern of the TH4001 is wider than the ES600, and the wider pattern of the ES600 below ~4kHz would better match the wider pattern of a smaller mid woofer.

Assuming you agree with Pierre's assessment, it looks like the ES450, ES290 one of NicoB's https://audiohorn.net/next-gen-bi-radial-horn/
https://audiohorn.net/x-shape-horn/ or which other (CD?) horn?

I don't understand your question.

The audiohorn "X-shape" horns and their "Next Gen" finned bi-radial horns use two different approaches to maintaining a consistent horizontal dispersion over a wide bandwidth.

Art