Pa bass horn |
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Absolud
New Member Joined: 05 October 2016 Status: Offline Points: 3 |
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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
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1842 |
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DIgger......
Englischsprachiges Forum |
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_djk_
Old Croc Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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"
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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djk
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smithshorn
Registered User Joined: 08 February 2007 Status: Offline Points: 253 |
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smithshorn
Registered User Joined: 08 February 2007 Status: Offline Points: 253 |
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_djk_
Old Croc Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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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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djk
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Absolud
New Member Joined: 05 October 2016 Status: Offline Points: 3 |
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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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