HD 15 horn - similar design, possible simulations?

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similar design, possible simulations?

Printed From: Speakerplans.com
Category: Plans
Forum Name: HD 15 horn
Forum Description: Discussion / Questions about the HD 15 horn
URL: https://forum.speakerplans.com/forum_posts.asp?TID=2564
Printed Date: 27 March 2026 at 8:37am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com

Topic: similar design, possible simulations?

Posted By: moray james
Subject: similar design, possible simulations?
Date Posted: 07 September 2005 at 3:49am

Hi: my first post here. Onur Ilkorur has a nice web site at this address http://www.yildiz.edu.tr/~ilkorur/ - http://www.yildiz.edu.tr/~ilkorur/ There are two cabinet designs there which are very similar to the HD15, one in particular is very similar. I was wondering if anybody here could do simulations of Onur's cabinet and compare it to the HD15? Thanks moray james.

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moray james

Replies:

Posted By: stereokiller
Date Posted: 07 September 2005 at 9:25am

hi,
couldnt find any design which looks like a hd15.
am i stupid or blind, or maybe just tired???

greetings

Posted By: angus
Date Posted: 07 September 2005 at 9:43am

This http://www.yildiz.edu.tr/%7Eilkorur/speaker/beyma.htm - one I think.

Posted By: moray james
Date Posted: 07 September 2005 at 3:25pm

That's the one. Thanks for posting the link. As you can see the one cabinet is just a little bit larger than the HD15. Tuned to approx. 50 Hz. I would be interested in hearing comments on this design. Construction is more or less the same as for an HD15. Horn (Onur's)looks to be a little longer. Air load in front of the driver is more symetrical and larger than the HD, also would seem that there will be less direct reflection back into the driver from the cabinet walls. The other cabinet design can be configured to form a "W" bin with a second cabinet. Both are very interesting designs. Thanks for your help and time. Regards Moray James.

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moray james

Posted By: Timber_MG
Date Posted: 07 September 2005 at 3:47pm

Simulate it with a larger front chamber than the HD15 (measure it out using geometry) and take the transition from front chamber to horn throat as 1/2 the shortest diameter of the smallest opening added onto the length of the horn (simulated as two conical segments)