Speaker Asylum General speaker questions for audio and home theater.

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Re: Limited vertical dispersion speakers

Posted by Duke (D) on March 12, 2007 at 01:06:04

In Reply to: Limited vertical dispersion speakers posted by Bill the K on March 12, 2007 at 00:23:19:

Hi Bill,

The rules permit me to answer specific questions, and that sounds pretty specific to me. If the moderators feel otherwise I'm sure they'll let me know. Here are the lines I carry, with comments on their vertical dispersion characteristics.

Listing them roughly from most-to-least expensive:

1. SoundLab electrostats, which are tall line-source-approximating dipoles. Their geometry pretty much precludes floor and ceiling reflections. These are by far my most directional speakers in the vertical plane.

2. Gradient, which uses a coaxial mid/tweet unit wherein the midrange driver's cone acts as a waveguide to control the radiation pattern in the lower end of the tweeter's range.

3. GedLee Summa, a large high-efficiency speaker that uses a 90 degree constant-directivity round waveguide to control the radiation pattern above the 1 kHz crossover point.

4. AudioKinesis (my house brand), similar in configuration to the Summa but on a smaller scale. I'm also working on a coaxial model or two, which would resemble the Gradients in dispersion characteristics.

5. Gallo Acoustics. The MTM format of the Reference series has limited vertical dispersion. I don't know the frequency at which the piezo tweeter takes over but it's probably pretty high; that would make a difference because the piezo will have considerably greater vertical dispersion than the two cones will.

Hope this helps!

Duke

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