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A Compression Driver Flat From 10 kHz - 20 kHz |
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snowflake 
Old Croc 
Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3122 |
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 Posted: 12 August 2017 at 10:50am |
looks exponential not conical or event tractrix: http://prvaudio.com/wp-content/uploads/2015/05/WG14-25_Datasheet.pdf |
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doller
Young Croc 
Joined: 19 July 2014 Location: japan Status: Offline Points: 509 |
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Posted: 12 August 2017 at 12:00pm |
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That is the same as the selenium hl 14 25.( as you all know) Really it sounds gash. outside you can get away with it.About. But it has no uhf atall. What does come out is so compressed it's hard work to listen too. Made in mexico.
I just should point out that here we have no real options. No 18 sound or beymer anything good needs importing. |
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snowflake
Old Croc
Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3122 |
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Posted: 12 August 2017 at 5:57pm |
Imagine you will get loads of throat distortion at any sort of volume. table in Olson says a 600Hz 1" horn will produce 10% distortion playing a 1W 12kHz signal. exponential horns are objectively pretty useless for sound reinforcement but a surprising number of people are used to this terrible sound and just interpret it as what things sound like when loud. |
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_djk_
Old Croc
Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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Posted: 12 August 2017 at 10:38pm |
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"looks exponential not conical or event tractrix"
Technically it is an axis-symmetrical exponential horn. (it was easier to call it a conical) |
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djk
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doller
Young Croc
Joined: 19 July 2014 Location: japan Status: Offline Points: 509 |
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Posted: 13 August 2017 at 2:30pm |
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My home made one next to the selrnium. should i be calling it a symetrical axis expo? I just know it sounds far better. Need to work on the mouth in the mk3 version. this is mk2. lots more sanding to do.
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_djk_
Old Croc
Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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Posted: 13 August 2017 at 10:49pm |
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Is the side wall curved, or straight?
Conical would be straight. |
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djk
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doller
Young Croc
Joined: 19 July 2014 Location: japan Status: Offline Points: 509 |
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Posted: 14 August 2017 at 9:06am |
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curved. so i guess expo. My mistake. always learning. thanks djk.
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Elliot Thompson
Old Croc
Joined: 02 April 2004 Location: United States Status: Offline Points: 5175 |
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Posted: 14 August 2017 at 5:49pm |
That horn loses all its UHF once mounted on a baffle. And of course, the Compression Driver plays a factor. Here is the same horn using a low grade compression driver not attached to a baffle.  Best Regards, Edited by Elliot Thompson - 14 August 2017 at 5:52pm |
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Elliot Thompson
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_djk_ wrote: