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Old 22nd July 2009, 02:03 PM   #1
fb is offline fb  Australia
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Join Date: Apr 2005
Location: Brisbane, Aus
Default What would you do with an AESpeakers TD18H?

I've ordered an AESpeakers TD18H: http://aespeakers.com/shop/catalog/p...products_id=71


What would you do with it?

My guidelines/rules:
Bandwidth: roughly 30-100hz
High spl for PA usage, though the response still needs to be "hifi"
Box must be portable (I'll let you decide what that means)
No inductors unless you pull of something really special with it.
Xmax 14mm, Xmech 20mm. - Nick McKinney said it's safe to Xmech




I've attached hornresp screenshots of the sort of thing I'm looking at currently. It's a 326L (internal) tapped horn. SPL chart is with 1200 watts, just scraping under Xmech. I haven't looked at folding it yet.




Thanks!
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Old 22nd July 2009, 02:06 PM   #2
fb is offline fb  Australia
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Response graph
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Old 24th July 2009, 03:41 AM   #3
tb46 is offline tb46  United States
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Hi fb,

Looks interesting. If you can live with a larger box, here is the input for a similar tapped horn with a few edited dimensions.

Regards,
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Old 24th July 2009, 11:46 AM   #4
fb is offline fb  Australia
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Thanks tb46

It seems a versatile driver - if it doesn't work for me in a horn I can still get respectable output vented And the cost worked out about the same as getting 2x FaitalPro 15HP1020, which have much smaller Xmax.

Thanks for the sim - I have to work out how big I can go - yours is flatter, with less group delay down low.


I'm also looking at transmission lines / T-TQWT
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Old 24th July 2009, 12:37 PM   #5
fb is offline fb  Australia
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Here's a 300L tapped pipe / transmission line / whatever it's called.

Response looks wonky but excursion is smaller for the same SPL.
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Old 26th July 2009, 12:27 PM   #6
fb is offline fb  Australia
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Further to the last input screenshot.

Uses this inductor: http://www.erseaudio.com/Products/XQ.../EAV79-12-8000
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Old 26th July 2009, 12:28 PM   #7
fb is offline fb  Australia
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And a quick sketchup fold.
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Old 29th September 2009, 03:19 AM   #8
fb is offline fb  Australia
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261L Tapped horn:


Any comments? Net volume is the same as the vented enclosure, gross volume would be a little larger. Cutoff is a little higher, but hopefully I can bring that down as I approach a final design. Grey line in the output is the vented box.

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File Type: jpg output.jpg (52.3 KB, 32 views)
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