The goal of this project is line array for PA use. And so cut off the top and bottom of the surrounding frame to merge the mouth of each as close as possible in vertical line array of 4 high.

Has anyone any experience at all with this horn?
Other ideas are also very welcome.
Barry

This is interesting and I would like to know more about arrayed horns like this.

Crystal

Could you tell me where did you cross it over at?
Are you happy with the high frequency extension?

That looks like a good driver opinion for line array!
Thanks in advance,
Barry

Giving the PA option of tilting each box (one on top of the other) to direct the sound as needed toward the front and toward the rear of the audience.

As you may be aware, usually hung with bottom directed to the front and above ones directed toward the more distant in the audience.

As you may be aware, vertical dispersion in line array is dependent on frequency.

As you may be aware. In a large home theater application with 1 box, you might need to be a fair distance away before your standing verses siting would sound similar in the higher frequency range, due to the narrowed vertical dispersion in the upper range.

As you may be aware. It is essential that there is no distance between the horns so the edges if there are any need to be cut off so that the horns will integrate together.
Even then one can expect a little comb filtering to occur.

In direct radiators like dome tweeters it is more the distance from the center to center of the drivers that determines comb filtering interference between drivers as the frequency rises. IMO horns are superior to direct radiators at reducing comb filtering.

This is the reason why side by side positioning of either drivers or speakers is to be avoided if at all possible unless the frequency is limited to bass.

[this may be info you are already familiar with, or perhaps you have some different ideas to share]
Barry

I do not know much about arrays and would like to learn more. I thought arrays were supposed to narrow vertical to straight on basically so I thought maybe a tall pattern would not be what you really wanted. Not sure how the best way to go would be as I know cones are nearly omnidirectional anyway.

Random thoughts, JMHO, YMMV, et cetera.

Crystal

Yes, they narrow vertical dispersion. So much so that standing and sitting too near to them can make a big difference in the sound.
The nice thing is this tends to keep the upper frequencies from hitting the ceiling so readily. In a church or a hall or anything like that it can be a real plus for the acoustics, especially on voice. In a large room at home they can be nice too.

In some PA applications it is difficult to get good sound without using line array. Putting regular speakers on top of each other causes a lot of comb filtering.
My long term goal beyond just having fun, is to create many different designs for home and PA for custom building and perhaps even sales of plans over the Internet. A few years away mind you and dependent on many factors.
If you have questions I would be happy to try and answer. There may be others here who are more knowledgeable and could give additional input.
I'm new to this forum.

Noticed that the Jbl VRX932LAP has 3 tweeters in 13in height.
http://jblpro.com/products/portablesound/vrx/vrx932lap.html
Apparently horns do better than cones (or domes) in this domain.

Good you bought it up. Important to look for this my experiments.
Thanks
Barry

I have not measured the combo, remember this combo is very cheap and when compared to the expensive brother, BE250(if you have the money buy this unit), I strongly suspect it will dip at higher frequencies, probably above 10-12Khz. I use an active x-over I can easily equalise it.

The combo is well worth a try, less than $60 per side.