seti Posted December 31, 2007 Share Posted December 31, 2007 Roy, Do any of these tractrix bass horns still exists? Would love to see some pics. Quote Link to comment Share on other sites More sharing options...
ZAKO Posted December 31, 2007 Share Posted December 31, 2007 I understand the TrackTrix bubble going down the horn as being "stickey" at the sides changing its shape at the end of its propagation. Quote Link to comment Share on other sites More sharing options...
bodcaw boy Posted December 31, 2007 Share Posted December 31, 2007 I understand the TrackTrix bubble going down the horn as being "stickey" at the sides changing its shape at the end of its propagation. that happens for any area expansion horn, not just tractrix. in Christ, because of God's grace, roy Quote Link to comment Share on other sites More sharing options...
bodcaw boy Posted December 31, 2007 Share Posted December 31, 2007 Roy, Do any of these tractrix bass horns still exists? Would love to see some pics. sorry setisan. in a wood pile somewhere....... in Christ, because of God's grace, roy Quote Link to comment Share on other sites More sharing options...
bodcaw boy Posted December 31, 2007 Share Posted December 31, 2007 i guess i better throw away all those good measuring, good sounding bass horns i did in the tractrix form....... dr edgar told me that too. he also told me that you couldn't change the equation to get different coverage patterns.......red flag syndrome..... At work just the other day we were discussing the fact that our measured data didn't agree very well with our simulated data. Somebody recommended taking more measurements. I recommended developing better simulations. Greg i like the way you think. even paul had a "modified" exponential equation for his horns. he once told me "equations are nice but dirty curves are better." in Christ, because of God's grace, roy Quote Link to comment Share on other sites More sharing options...
Islander Posted January 1, 2008 Share Posted January 1, 2008 as a tinker, i am mainly interested in getting somewhere; not in the details of how i got there. The difference between an engineer and a scientist... Of course, we need both. Quote Link to comment Share on other sites More sharing options...
bodcaw boy Posted January 1, 2008 Share Posted January 1, 2008 as a tinker, i am mainly interested in getting somewhere; not in the details of how i got there. The difference between an engineer and a scientist... Of course, we need both. i have been both......i prefer to be a tinkerer.... in Christ, because of God's grace, roy Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted January 26, 2008 Share Posted January 26, 2008 Ok, so if one wanted to build a Tractrix horn to use with a K Horn bass bin and a JBL 2470 driver, what should one do? I will be using JBL 2404 tweeters. I have the spreadsheet off of the Volvotreeter website, but need to know if the equation needs to be modified. Next question, what height to width ratio is preferred? I do not need to fit the horns into anything so I can use whatever specs work best. Quote Link to comment Share on other sites More sharing options...
DrWho Posted January 26, 2008 Share Posted January 26, 2008 I don't think the 2470 can dig low enough to be used with the Khorn...it's rated for 500Hz and above and you really need to get down to ~350Hz with the Khorn. Quote Link to comment Share on other sites More sharing options...
djk Posted January 28, 2008 Share Posted January 28, 2008 Here is the 2470 with an aluminum diaphragm on a horn intended for a 500hz crossover. The HF above 10Khz suffers because of the 2327 1:2 adaptor and then the 2328 2:1.375 adaptor to mate with the 2350 horn (the expansion from 1" to about the size of a tennis ball and back down to 1.375" causes a lot of phase cancellations). http://www.jblpro.com/pub/obsolete/2421ab.pdf Quote Link to comment Share on other sites More sharing options...
DrWho Posted January 28, 2008 Share Posted January 28, 2008 So what's the distortion like below 800Hz? Quote Link to comment Share on other sites More sharing options...
moray james Posted October 16, 2010 Share Posted October 16, 2010 Thank you gentlemen: what a wonerful group of audio friends you are as well as being a supreb support system for Klipsch owners and interested fans. so I am a bit confused. Lets say for the moment that I am more inclined to go with a smaller main and augment with stereo subs. Now it has been commented on that the heritage line will out perform the new RB series of two ways. I has also been said the tractrix mid horn is superior to the older exponential horns of the early Heresy. So aside from the slightly lower efficiency of the RB series they do have a tractrix mid/high frequency horn. So why then is the older squakers and tweeter horns better? I confused which is better in you (collective opinions). I visited my local Klipsch dealer today and found a new (demp) set if RB61's with full warranty for only $390.00 the pair which seems like a very good deal. A pair of RB81's for $612.00 the pair. Yes they both need subs and so do Heresy's or even Forte's if you want deep bass. Does the real difference lie in the comp driver? Both the 61 and the 81 were smooth and well extended with good image and stage even sitting on a shelf. Aside from the efficienct difference (stated as abut 2db) between the new designs and the classics are the older three ways with their more complex crossovers really better and if so in what way or rather what accounts for the superiority of one over the other. I must admit that the price and size are right of the RB61's so I am tempted rather than to buy old at as high or higher price and still face diaphragm upgrades etc.. I am open to compelling comments either way.Thanks for such great assistance. Regards Moray James. Quote Link to comment Share on other sites More sharing options...
moray james Posted October 16, 2010 Share Posted October 16, 2010 My appology this is posten in the wrong thread please ignore this post. Regards Moray James. Quote Link to comment Share on other sites More sharing options...
moray james Posted February 14, 2012 Share Posted February 14, 2012 Thanks I just found all this great information. My eyes are tired will finish reading tomorrow. Best regards Moray James. Quote Link to comment Share on other sites More sharing options...
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