Do rectangular front horns have to be horizontal

[Bill poster]

Just wondering why I see so many horizontal front horns when there are line array speakers etc

edited

 

[Bill poster]

In other words, why arent there more vertically shaped shaped front horns? I can only think of one, possibly two

 

[Defo]

Check out the JBL Array home series

 

[croat47]

Perhaps our hearing gear being better tuned to L-R separation relative to up-Down? So, a CD horn is better serving its audience creating a horizontal field. Does it also minimize lobing issues by controlling the vertical to a tighter spread?

 

[Pit Hinder]

Don´t let your eye outvote what your brain knows, it´s exactly the other way round - physics.
Waves bent by a narrow slot - a rectangular horn mounted horizontally squanders a lot of energy by spreading it up and down instead of where it´s needed. PA people accept that as the lesser evil because it makes the boxes less high and thus easier to shlep around.

Pit

 

[GM]

Though primarily to keep acoustic centers as close as practical.........

GM

 

[Pit Hinder]

GM - "practical", "affordable" and "lightweight" are a marriage still not seen. Be honest - have you ever met a happy roadie?

 

[GM]

Haven't known all that many, maybe a hundred?, but as a group they seemed to enjoy their work/lifestyle far more than the majority of the probably several thousand office workers I've known.

GM

 

[Bill poster]

Pit, so a vertically shaped horn is feasable? The reason is very important. To make it female friendly!

If I made a front horn with a mouth of say 180 cm height x 45 cm width would it work in principle
not sure what hz that wd go to but anyways.

 

[Pit Hinder]

Hmmm...could you go back to think about rearloaded? The Sachiko
http://homepage.mac.com/tlinespeakers/FH/images/Sachico.gif
might be what you need and still be the size you can get away with.

 

[Bill poster]

Thanks Pit- what I want to do is marry a front horn/full range aluminium driver to a pro 15" woofer in a bass reflex enclosure- I also want to make the speakers attractive, ie sonus faber. I`m thinking if I made a thin vertical mouthed front horn to fit in a cabinet with slightly curved sides, the `wasted` volume can then be used for the bass driver, firing downwards at the bottom of the cabinet

The x/o wd be around 100-120 hz, but I am worried about the depth of the cabinet, ie how long wd a 100 hz horn have to be?

 

[djn]

Here are my horns

 

[Bill poster]

Hey, I saw these on google images! reminds me a little bit of the tannoy westminsters. nice work!

love to know more, how they sound etc

what dimension and depth is the mouth, and what hz do the horns get down to?

 

[Pano]

Yes DJN, those are super cool. Don't you have a thread about those horns?

 

[CLS]

Here you are:

http://www.diyaudio.com/forums/multi-way/160996-formidable-fostex-front-horn.html

 

[djn]

Thanks CLS for posting the link. It reminded me that I have to post updates.

I did not build these speakers. A friend of mine got them from the origanal guy and I got them from Bill. I designed and built a pair of Open Baffle Line Array EconoWave speakers and traded those for these.

I got a harley for my wife....not a bad trade! hahahahaha