The Dude Posted September 17, 2014 Share Posted September 17, 2014 I didn't want to crash the threads with Roy's interviews, so I started a new one. But why not a round tractrix horn, I know it could be opinion but I have read that a lot of folks like the sound better then square. Is it the fact its harder to make, maybe 3d printing will change that. Just curious on your thoughts. 1 Quote Link to comment Share on other sites More sharing options...
seti Posted September 17, 2014 Share Posted September 17, 2014 I've heard several round tractrix horns. They sound great. If you can hear a pair go for it. Roy rocks as do his horns.. Quote Link to comment Share on other sites More sharing options...
Arash Posted September 17, 2014 Share Posted September 17, 2014 they got least coloration due to no sharp angel. Quote Link to comment Share on other sites More sharing options...
mustang guy Posted September 17, 2014 Share Posted September 17, 2014 I can understand narrowing the dispersion angle on the vertical axis to reduce reflections and provide more efficiency. Like Arash says, there is a cost. I would think making a non round tractrix horn would be more difficult. A round one could be made on a lathe pretty easily. It would be tedious, and you would have to keep your measurements, but in the end, a perfect tractrix shape. 1 Quote Link to comment Share on other sites More sharing options...
DrWho Posted September 17, 2014 Share Posted September 17, 2014 The problem with perfectly circular is you get bell modes stacking on top of each other. The rectangular cross-section is way more forgiving in that regard. Also, a rectangular mouth doesn't mean the wavefront is rectangular...you get more of an ellipse shape. Quote Link to comment Share on other sites More sharing options...
Arash Posted September 17, 2014 Share Posted September 17, 2014 I would think making a non round tractrix horn would be more difficult. A round one could be made on a lathe pretty easily. It would be tedious, and you would have to keep your measurements, but in the end, a perfect tractrix shape. that's right. making a perfect round horn is much more easier than a for example elliptical one. round horns could be built using turning lathe. Quote Link to comment Share on other sites More sharing options...
djk Posted September 17, 2014 Share Posted September 17, 2014 Make a mold and start cranking out ellipticals. AH! Faital Pro 18 Sound Quote Link to comment Share on other sites More sharing options...
The Dude Posted September 17, 2014 Author Share Posted September 17, 2014 Roy rocks as do his horns The problem with perfectly circular is you get bell modes stacking on top of each other. The rectangular cross-section is way more forgiving in that regard. I guess this may be a reason why Roy chooses rectangular. Good stuff guys, I guess what one gains from one method they give up something. 1 Quote Link to comment Share on other sites More sharing options...
The Dude Posted September 17, 2014 Author Share Posted September 17, 2014 Make a mold and start cranking out ellipticals I noticed some of these ellipticals have what we would be use to as normal dispersion patterns. Is that do to the design, or is it something new that people have been liking the sound of. Quote Link to comment Share on other sites More sharing options...
Fjd Posted September 17, 2014 Share Posted September 17, 2014 The problem with perfectly circular is you get bell modes stacking on top of each other. Are bell modes related to the reason why people add damping and bracing to the horn? In addition, I'm not sure exactly how bell modes work in a 15 inch driver; however, I've heard that when Altec used the curvalinear cone, these types of resonances would essentially be eliminated. Do you have insight into this area that you can provide? Quote Link to comment Share on other sites More sharing options...
Fjd Posted September 17, 2014 Share Posted September 17, 2014 Roy rocks as do his horns The problem with perfectly circular is you get bell modes stacking on top of each other. The rectangular cross-section is way more forgiving in that regard. I guess this may be a reason why Roy chooses rectangular. Good stuff guys, I guess what one gains from one method they give up something. Given the market segment that Roy designs for, isn’t Roy’s focus more on constant directivity (is this the correct term?) where using the rectangular horn aperture would seem to allow for better tailoring of the horizontal coverage angle of the width and tailoring for proper vertical coverage angle of the height? It would seem that this aspect would potentially be a design limitation using a round aperture tractrix horn? From an anecdotal perspective, I tend to hear more people compliment the imaging and sound stage of the round tractrix horn vs. the rectangular tractrix horn. However, they tend to describe the ‘sweet spot’ as being smaller for the round than the rectangular horn, although if a tractrix flare has a true 90 degree exit angle, as shown in the diagram below, I’m not sure why this would be? Quote Link to comment Share on other sites More sharing options...
seti Posted September 17, 2014 Share Posted September 17, 2014 Make a mold and start cranking out ellipticals. AH! Faital Pro 18 Sound I really like those Bill Woods horns. Do you know him? He seems to have dropped off the internet.. Quote Link to comment Share on other sites More sharing options...
The Dude Posted September 17, 2014 Author Share Posted September 17, 2014 What is the difference between the Bill Woods horns and what they call a waveguide. Quote Link to comment Share on other sites More sharing options...
djk Posted September 18, 2014 Share Posted September 18, 2014 A lot of that is just semantics. The AH! and 18 Sound are conical (like the K402 (except for the jast couple of inches), the Faital Pro is tractrix all the way. "I’m not sure why this would be?" The angles near the throat control the HF, and the lower the cut-off of the horn the narrower it will get at HF. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted September 18, 2014 Share Posted September 18, 2014 (edited) The Icon W series and V series did not use a rectangular horn. I thought they produced smoother Hi's. The horn in these speakers are more flower shaped. Edited September 18, 2014 by derrickdj1 Quote Link to comment Share on other sites More sharing options...
Arash Posted September 18, 2014 Share Posted September 18, 2014 interesting 1 Quote Link to comment Share on other sites More sharing options...
wvu80 Posted September 18, 2014 Share Posted September 18, 2014 (edited) The Klipsch compression driver (CD) is marked "63" and has a two-inch throat. The other is a SEOS design with a DNA-360 CD and a one-inch throat. Both are 12" wide. They sound remarkedly alike when played through the Klipsch CF-4 XO. http://www.diysoundgroup.com/plastic-seos-12/plastic-seos.html http://www.avsforum.com/forum/155-diy-speakers-subs/1291022-hey-guys-we-need-little-rallying-here.html Edited September 18, 2014 by wvu80 Quote Link to comment Share on other sites More sharing options...
The Dude Posted September 18, 2014 Author Share Posted September 18, 2014 As I am putting the pieces together. A lot of that is just semantics. The AH! and 18 Sound are conical (like the K402 (except for the jast couple of inches), the Faital Pro is tractrix all the way. "I’m not sure why this would be?" The angles near the throat control the HF, and the lower the cut-off of the horn the narrower it will get at HF. This got me thinking. The jbls 2360s have a constant directivity, which you have mentioned beofre could be heard. I had to re watch the video of why Roy prefers a tractrix and he seems to feel the same as you. To be continued. Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Chief bonehead Posted September 19, 2014 Klipsch Employees Share Posted September 19, 2014 (edited) A lot of that is just semantics. The AH! and 18 Sound are conical (like the K402 (except for the jast couple of inches), the Faital Pro is tractrix all the way.. Really?? And just how would you know that? Or is it just the last 1.8769375". Lol! Edited September 19, 2014 by Chief bonehead Quote Link to comment Share on other sites More sharing options...
NBPK402 Posted September 19, 2014 Share Posted September 19, 2014 interesting I'm confused as to what they mean when they say minimum frequency up to 500Hz... Does that mean it is for use below 500Hz only? 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.