Long Horn for 15" driver
Printed From: Speakerplans.com
Category: Plans
Forum Name: New Projects Forum
Forum Description: Forum for new speakerplans projects, in memory of Tony Wilkes, 1953 - 2014
URL: https://forum.speakerplans.com/forum_posts.asp?TID=529
Printed Date: 27 March 2026 at 12:38am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: Long Horn for 15" driver
Posted By: Box-designer
Subject: Long Horn for 15" driver
Date Posted: 02 September 2004 at 12:08pm
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Hi everyone I need plan of horn (long horn, not like HD15) for 15" driver. Thanks |
Replies:
Posted By: Timber_MG
Date Posted: 02 September 2004 at 4:28pm
| I am current helping dubsuction with his for a PD156. Post some T/S and I'll tell you whether the plan is suitable. |
Posted By: Box-designer
Date Posted: 02 September 2004 at 6:01pm
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Hi Here are parameters t/s: http://www.eminence.com/eminence/pages/products02/speakers/del15lf.htm - http://www.eminence.com/eminence/pages/products02/speakers/d el15lf.htm But I'm not sure if this driver is suitable for horn :( Could You give some tips, advices about designing horns. Also software if you know and mathematical formulas. Many Thanks |
Posted By: whitehousejamie
Date Posted: 02 September 2004 at 6:14pm
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Hi, The Eminence Delta LF will perform very poorly in a Long Horn, its has an EBP of 65, a BL of only 14.5 and a very high Qts of 0.58. Rog calls this a 'mush motor', as the driver has very little control over its cone. For long horns, you need a driver with a strong motor system, (High BL and low Qts) to move lots of air. The Delta 15LF driver will only work in a Reflex type cabinet. Hope this helps Jamie ------------- Lighting, sound & staging hire www.eventstore.co.uk www.pauljamespromotions.com |
Posted By: Timber_MG
Date Posted: 02 September 2004 at 8:20pm
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Uhm, one could make something work in a way, but this driver doesn't have anywhere near what one would call "ideal" parameters for a horn. (Weak motor... BL/sqrt(Re)...above 10 is starting to become very nice.
For such apps look at ye good ol' bass-reflex boxes and similar designs. |
Posted By: Timber_MG
Date Posted: 02 September 2004 at 8:25pm
| Oh, and for medelling look ar David McBean's hornresp. For some theory have a lok at Rogs Link page elsewhere on this site. Melhuish.org has some good basics, but many others abound. ML-Util is also useful to get a starting alignment and then one shortens the horn and so on (link on Melhuish) |
Posted By: Box-designer
Date Posted: 03 September 2004 at 12:37pm
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Hi That's what I thought that this driver will be weak "air pumper", but people on other forum ,which I'm visiting, think that any driver is suitable for horn :) So maybe you could give me a plan (if you have) for long horn with Kappa 15LF driver or other with stronger "motor" like Fane Crescendo15B :) Many thanks |
Posted By: Timber_MG
Date Posted: 03 September 2004 at 1:12pm
| How 'bout a link to this forum? |
Posted By: Box-designer
Date Posted: 03 September 2004 at 1:53pm
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Hi This is Polish forum because I'm from Poland :) But if you want to see it I'm giving you link http://www.elektroda.pl/rtvforum/forum25.html - http://www.elektroda.pl/rtvforum/forum25.html And here is example that shows that they using any driver for horn, (but you must be registered to see diagrams): http://www.elektroda.pl/rtvforum/topic158629-0-asc-90.html - http://www.elektroda.pl/rtvforum/topic158629-0-asc-90.html
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