Horn length in Horn Response

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   I have recently downloaded Hornresp, a very good program to simulate Horn Design,(this compliment goes to David J McBean).
Can some Kind Hearted Horn Guru help me how to calculate the length of the horn, for a particular design (i.e. say punisher horn). I want to know how to calculate the different conical sections to enter for the folded horn segments.
Thanks,
Criss.

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criss Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 05 October 2005 Status: Offline Points: 20	Post Options Post Reply Quote criss Report Post Thanks(0) Quote Reply Topic: Horn length in Horn Response Posted: 30 December 2005 at 4:21am
	I have recently downloaded Hornresp, a very good program to simulate Horn Design,(this compliment goes to David J McBean). Can some Kind Hearted Horn Guru help me how to calculate the length of the horn, for a particular design (i.e. say punisher horn). I want to know how to calculate the different conical sections to enter for the folded horn segments. Thanks, Criss.

minaximal Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 26 September 2004 Location: United Kingdom Status: Offline Points: 1784	Post Options Post Reply Quote minaximal Report Post Thanks(0) Quote Reply Posted: 30 December 2005 at 9:45am
	simple, measure down the middle of the flares on the designs (roughly middle anyway) and maybe add on a bit up to 10% i dunno how walt dealt with end correction, where the horn flare theoretically carries on beyond the limitation of the cabinet/horn mouth, until the soundwaves realise there are no boundaries any more. Edited by minaximal - 30 December 2005 at 9:46am

tb_mike Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 01 October 2004 Location: New Zealand Status: Offline Points: 2744	Post Options Post Reply Quote tb_mike Report Post Thanks(0) Quote Reply Posted: 08 January 2006 at 11:43pm
	The end correction amounts to half the mouth circumference apparently.

_djk_ Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 23 November 2004 Location: United States Status: Offline Points: 5992	Post Options Post Reply Quote _djk_ Report Post Thanks(0) Quote Reply Posted: 09 January 2006 at 2:53am
	"The end correction amounts to half the mouth circumference apparently." Doesn't make any sense. The mouth of an array of modular bass horns needs to have a circumference of 1W, about 35' in 4Pi for 32hz. In 2Pi this would be about 8-3/4' wide by 4-3/8' tall, close to a four stack of Lab 12 cabinets (a six pack would be 115%). They will really start going to town above the 1/2W length (mouth to throat). I might spot you 1/2 of the width of the horn mouth for end correction (very generous). So with the above example we would need an overall length of 17' less 4-3/8', or 12-5/8' total length inside the box. Hmm, how long is a Lab 12 from the throat to the mouth?
	djk