Xtro flare redevelopement thread |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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Seems logical concerning wavelengths. What I cant understand is why between 700hz and 1,6k horn plays wider vertically. It should be affected as in point 2. Horn is very slowly expanding vertically and fast horizontally. Why its reversed?
Offtop: I am always wondering why line arrays have mids horizontal instead of verticall |
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Teunos
Old Croc Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1799 |
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You should think about your question again and the points i made in my previous post. The answers are there.
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Best regards,
Teun. |
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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Er - they have them vertical, you stack the boxes on top of each other |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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So I made bigger mouth. I kept the width but I increased the height. Here it is:
My guess was that transition between 1>2 was vertically around 1,5kHz(on smaller horns) and is around 1,2kHz on bigger one. Edit:
Is it possible to have such huge difference vertically and horizontally? Its 50cm x 25cm mouth. Where is this from? Sometimes it appears way over usefull bandwidth like 4kHz while after 2kHz there is totally nothing. Edited by gen0me - 26 June 2017 at 4:40pm |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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Update:
https://drive.google.com/folderview?id=0B5y23T8xURtGR1hhRGx5UnUyRG8 Thought there is a standing wave on 800Hz and there is but changing rear chamber dont eliminate that bump. |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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Teunos there is no option of normalized response in Abec. I can only make measurements at points or arcs. Not the whole sphere.
Here is bonus standing wave in rear chamber: Does xtro originally has this mountain around 800Hz? |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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7.10 update. https://drive.google.com/folderview?id=0B5y23T8xURtGN3hvcks1WV9pNWc
And here Ive got a winner: Diffraction slot was a briliant idea. The bold line(top pattern) is always horizontal. Edited by gen0me - 09 July 2017 at 2:59pm |
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Sapro2
Registered User Joined: 31 January 2015 Location: Somerset Status: Offline Points: 354 |
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Sorry to hijack but Teunos that was a brilliant post. Thankyou |
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Splat Soundsystem
Baby Sham pram Soundsystem Sapro - SoundCloud https://soundcloud.com/sapro DJ Sapro. West country free party DJ and Producer. |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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I was wrong. The 800hz mountain is not from rear ch standing waves. It seems to be tendency of horn for higher efficiency. I did similar things to those preventing midband wasting(bigger smoother mouth) and all efficiency of top bandwidth rose to level similar to this 800hz.
Here are the two horns: 7,10,16,2(little phase plug update) fits in xtro. 7,10,24 bigger one(higher) 7,10,16,2: 7,10,24: 7,10,16,2: 7,10,24: 7,10,16,2: 7,10,24: |
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Teunos
Old Croc Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1799 |
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Keep on exploring good sir
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Best regards,
Teun. |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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1) 2) 3) 4) Thats why 7,10,24 plays that high. I guess slot and outside are out of phase. It cant be the slot itself. Wavelength there has ~15cm. Edited by gen0me - 18 August 2017 at 4:16am |
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doller
Young Croc Joined: 19 July 2014 Location: japan Status: Offline Points: 509 |
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fantastic thread, Thanks guys.
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