What is the tweeter with the best dispersion at 90°?

[fjhuerta]

Let's say.. if you wanted to build a speaker with a tweeter firing straight up, with no diffusors on top, which one would you use?

I'd use the Seas DXT, but I'm wondering if a smaller unit (3/4", 1/2") would do a better job.

[michiganpat]

Re: What is the tweeter with the best dispersion at 90°?

Let's say.. if you wanted to build a speaker with a tweeter firing straight up, with no diffusors on top, which one would you use?

I'd use the Seas DXT, but I'm wondering if a smaller unit (3/4", 1/2") would do a better job.

honestly, if you can find some in good condition, the 3/4" AR2ax or AR3a tweet...or the tweeter Roy Allison designed for the Allison speakers of the late 70's

[GranteedEV]

Re: What is the tweeter with the best dispersion at 90°?

Let's say.. if you wanted to build a speaker with a tweeter firing straight up, with no diffusors on top, which one would you use?

I'd use the Seas DXT, but I'm wondering if a smaller unit (3/4", 1/2") would do a better job.

As far as omni goes, what I would do is do bipole HiVi RT1.3 rather than an upfiring tweeter.

[fjhuerta]

Re: What is the tweeter with the best dispersion at 90°?

As far as omni goes, what I would do is do bipole HiVi RT1.3 rather than an upfiring tweeter.

I don't know. Wouldn't an omni to dipole transition at 1.x KHz cause havoc on power and frequency response? That's my main worry.

[critofur]

Re: What is the tweeter with the best dispersion at 90°?

1: Plasma sphere tweeter
2: CDT by Anthony Gallo
3: mbl Radialstrahler HF unit
4: To be continued...

[ligs]

Re: What is the tweeter with the best dispersion at 90°?

How about the inverted dome tweeter used in EPI/Genesis/Human.

Recently I refoamed a pair of Genesis 22s and a pair of Genesis 210s. The 1-inch inverted dome is used in both models. The highs sound very transparent, lively and musical(to me at least).
Mark K tested a later version of the tweeter made by Human Speakers. It looks at 10 k Hz the change in spl for this tweeter is just a couple of db from zero to 45 degrees.

http://www.audioheuristics.org/measurements/Testing/Human%20002%20tweeter/human_speakers_pro_002_tweeter.htm

[Wolf]

Re: What is the tweeter with the best dispersion at 90°?

As far as omni goes, what I would do is do bipole HiVi RT1.3 rather than an upfiring tweeter.

Can that even be run as a dipole? or do you mean a pair in bipolar operation back to back? They are very thin!

Later,
Wolf

[scottsehlin]

Re: What is the tweeter with the best dispersion at 90°?

The Hiquphon OW1 has very good dispersion out wide. When I had a pair, they were by far the most touchy speakers I had with respect to placement too close to side walls.

[GranteedEV]

Re: What is the tweeter with the best dispersion at 90°?

Can that even be run as a dipole? or do you mean a pair in bipolar operation back to back? They are very thin!

Later,
Wolf

A pair in bipole.

[neildavis]

Re: What is the tweeter with the best dispersion at 90°?

The one on the right is an interesting tweeter. It is made with Sony headphone elements that are 8mm in diameter, so the response is non-directional. We quickly measured it and saw useable response down to 5K, so it actually works. The one on the left is the magnet structure for a cylindrical Heil. Maybe someday I'll finish it off.