Pa bass horn
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Category: Plans
Forum Name: Other plans
Forum Description: Discussion / Questions about all the other plans
URL: https://forum.speakerplans.com/forum_posts.asp?TID=96808
Printed Date: 28 March 2024 at 11:15pm Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: Pa bass horn
Posted By: Absolud
Subject: Pa bass horn
Date 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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Replies:
Posted By: bob4
Date Posted: 06 October 2016 at 7:34pm
DIgger......
Englischsprachiges Forum
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Posted By: _djk_
Date 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" rel="nofollow - http://speakerplans.com/index.php?id=guide
http://www.google.com/search?q=Community+vb790+horn&biw=1402&bih=936&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi8samCrMfPAhUf3YMKHa9iAGIQ_AUIBygC" rel="nofollow - 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."
------------- djk
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Posted By: smithshorn
Date Posted: 26 October 2016 at 10:48pm
Posted By: smithshorn
Date Posted: 26 October 2016 at 10:50pm
Posted By: _djk_
Date 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.
------------- djk
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Posted By: Absolud
Date Posted: 29 October 2016 at 3:23pm
Thank you very much !!! Is this hornflare compatible with Eminence kappa 15a? (old vision,450RMS) MfG.
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