diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Multi-Way (http://www.diyaudio.com/forums/multi-way/)
-   -   tweeter horn directivity (http://www.diyaudio.com/forums/multi-way/226851-tweeter-horn-directivity.html)

cT equals piD 2nd January 2013 12:16 AM

tweeter horn directivity
 
How would you characterize directivity of a tweeter horn? Some other threads here at diyaudio refer to a constant directivity horn- is that the case with all tweeter horns, or does it depend on the particular design?

One post in a thread here at diyaudio claims that a tweeter horn has greater directivity than a dome tweeter. An article at wikipedia claims that a tweeter horn has less directivity than a tweeter that is not horn-loaded.

The reason I ask is that I have several Pioneer AHE60-53F horn tweeters that I think might be suitable for what I want to do. If this horn tweeter has constant directivity and not too narrow, say 45 deg. to one side of the radiation axis, that would be acceptable.

Also, if anyone has used this Pioneer horn tweeter, would a crossover frequency of 2 kHz be acceptable with this tweeter?

Regards,
Pete

sippy 2nd January 2013 03:12 AM

I cant answer this question directly, but if you head over to Pi Speakers - unmatched quality and state-of-the-art performance, click on forum, register then click on Sticky FAQ this is lots of interesting information.
No doubt one of the 'esteemed' will answer shortly here - a picture of the horn tweeter might help generate interest as well.........

GM 2nd January 2013 06:22 AM

It's an expo, so will have a collapsing directivity with increasing frequency [rising on axis] similar to a cone tweeter. You need a relatively large waveguide for constant directivity.

Based on the limited info, it's probably fine down to 2 kHz.

GM

cT equals piD 2nd January 2013 02:30 PM

Thanks to sippy and GM for your responses.

Connecting the tweeter and a 470 Ohm resistor in series across the output terminals of my sine wave generator, I measured a slight rise in voltage drop across the input terminals of the tweeter at about 1.4 kHz. I didn't hear a noticeable drop of sound level until around 1 kHz. So thanks for the comment, GM, it does seem that I can use it at 2 kHz.

Photo of the tweeter to follow, shortly, hopefully.

Regards,
Pete

cT equals piD 2nd January 2013 04:04 PM

Here is a photo of the tweeter-

http://www5.snapfish.com/snapfish/sl...NAME=snapfish/

cT equals piD 3rd January 2013 01:10 AM

Well, here is a link to the photo,

http://share.shutterfly.com/action/w...=0Rbs2bhm0bOPg

cT equals piD 4th January 2013 01:23 AM

1 Attachment(s)
Maybe this will work,

Attachment 321379

Hey, there we go! I figured this out by reading the mostly clear article, "How do I upload images or files" the link to which can be found on the diyaudio support page.

cT equals piD 4th January 2013 01:48 AM

By the way, so far on the web I have only seen references to the AHE60-51F, not -53F.
Do you think that I have a collector's item, possibly worth millions?

But seriously, if anybody knows in what way -53F differs from -51F, I'd like to hear from you.

Regards,
Pete

GM 4th January 2013 04:52 AM

Practice makes perfect! ;)

The 53 doesn't show up in any of my old catalogs, so can only assume that the mounting holes and decorative ring are the only differences.

GM

cT equals piD 4th January 2013 05:11 AM

Quote:

Originally Posted by GM (Post 3310346)
The 53 doesn't show up in any of my old catalogs, so can only assume that the mounting holes and decorative ring are the only differences.
GM

Thanks, your feedback is much appreciated! I don't have the specs for the 53, but I do for the 51.

Regards,
Pete


All times are GMT. The time now is 01:06 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2