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Pa bass horn

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Absolud View Drop Down
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    Posted: 05 October 2016 at 6:36am
Halli Hallo,ich habe 2 15"hornflares von Community (vb790).
Ich suche dringend den Plan für das Gehäuse..und eventuelle tip's für den Bau.
MfG.Danny.
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bob4 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 06 October 2016 at 7:34pm
DIgger......

 Englischsprachiges Forum Wink

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_djk_ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 07 October 2016 at 12:33am
" Hello, I have 2 15 "horn flares from Community (vb790).
I am urgently looking for the plan for the housing..and possible tip's for the construction."

The box size needs to be adjusted for the parameters of the woofer used.

It is not a bass horn, midbass at best, and reflex for the lowest octaves.

http://speakerplans.com/index.php?id=guide

https://www.google.com/search?q=Community+vb790+horn&biw=1402&bih=936&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi8samCrMfPAhUf3YMKHa9iAGIQ_AUIBygC


"That horn flare is a VB790. You could use a 15" or 18". With the 18 you can get down to 40Hz, and 45Hz with a 15. Part of the technique was to block off part of the port for different tunings and drivers.  Flare rate 70Hz. Suggest you use a reasonably steep high pass. This is not a sub woofer design, but works really well for BASS. With a 400 watt JBL of the time, we easily got 130+ out of the box, which was not bad for either the time or the size of the box. The factory box outside dimensions were 32.75"high, 25.5"wide, 24" deep. Before you make the box, check that the driver does not foul the back panel. The older ferrite drivers from JBL, TAD etc had a compact frame. Newer drivers are somewhat deeper."

Edited by _djk_ - 07 October 2016 at 12:40am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smithshorn Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2016 at 10:48pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smithshorn Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2016 at 10:50pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2016 at 11:28pm
14-1/2" deep is only good for an Fc of 233hz!!!!!!!!!!!!!

(based on the 1/4W depth of the horn)

Note the gain above 233hz with the EV woofer, the gain going away above the mass corner of the driver.


Edited by _djk_ - 26 October 2016 at 11:32pm
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Absolud View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Absolud Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2016 at 3:23pm
Thank you very much !!!
Is this hornflare compatible with Eminence kappa 15a? (old vision,450RMS)   
MfG.

Edited by Absolud - 29 October 2016 at 3:24pm
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