Randy Bey Posted February 17, 2001 Share Posted February 17, 2001 to go another octave lower? Quote Link to comment Share on other sites More sharing options...
Ray Garrison Posted February 17, 2001 Share Posted February 17, 2001 Randy, "Another octave lower", assuming the KHorns are cutting off somewheres in the area of 35hz, would meam taking the bass down to 17 or 18 cycles per second. I'm no engineer, but I have a feeling that a corner loaded horn flat to 18hz would be, uh, large. Quote Link to comment Share on other sites More sharing options...
Randy Bey Posted February 17, 2001 Author Share Posted February 17, 2001 actually I measure my K's down 10DB at 35Hz, as good as nothing, and of course the response drops precipitously from there. If one doubled the size, would that bring response down into the 20s? Or is this one of those things where it would have to be ten times bigger? Quote Link to comment Share on other sites More sharing options...
Klewless Posted February 17, 2001 Share Posted February 17, 2001 Guys, It seems to me that simply making them longer and bigger (while using the same flare rate) would not be the best solution. If I understand horn design, it appears that changing the flare rate to a lower value would provide the most bang for the buck. Of course that would automatically make them longer and bigger. ------------------ John P St Paul, MN Quote Link to comment Share on other sites More sharing options...
jdm56 Posted February 18, 2001 Share Posted February 18, 2001 quote: Originally posted by Randy Bey: to go another octave lower? Technically speaking;Too Danged Big!s> -Blind Mellon McCall Quote Link to comment Share on other sites More sharing options...
Ray Garrison Posted February 18, 2001 Share Posted February 18, 2001 Hey, Randy... I was looking for this link, took me a while to find it. This might give you some ideas to work with. Try to keep things in perspective while you're taking the tour... http://www.decware.com/tour25.htm Ray ------------------ Music is art Audio is engineering Quote Link to comment Share on other sites More sharing options...
Jeff Robinson Posted February 18, 2001 Share Posted February 18, 2001 Here are two websites that you may like; www.users.bigpond.com/dmcbean/ www.geocities.com/loudspeakerguru/ First link is a good horn designing program, actually horn response analysis, you still need to plug in the numbers, including Thiele/Small parameters. Second one has posted a link to Paul Klipsch's original design. Doubling the mouth area would lower the cutoff frequency by 1/2 octave so you need to both QUADRUPLE the mouth area and HALVE the flare frequency. Paul Klipsch used a "rubber throat" - the initial flare is at a much higher frequency to shorten the throat air column length. You can try trading off between throat length and throat area, remember adjusting the throat area and flare frequency will change the back chamber volume. Every change leads to more changes. I think this will quadruple the cabinet volume. I've posted 2 folded horn designs with flare frequencies of 28 and 34 Hz. Quote Link to comment Share on other sites More sharing options...
Randy Bey Posted February 19, 2001 Author Share Posted February 19, 2001 Thanks Jeff, your sight is excellent. Making the bass bin four times the size does not seem practical, does it. I am looking for a way to horn load a subwoofer, not to get 8HZ or anything, just to get closer to that bottom octave that the Khorns don't reach. Maybe your 28HZ horn would do the trick. The blueprints read like Greek to me though. Quote Link to comment Share on other sites More sharing options...
Jeff Robinson Posted February 20, 2001 Share Posted February 20, 2001 Randy; All the plates used in the design have an assigned letter (except the shell), they have 90 degree edges where they attach to the top and bottom, the other edges' bevels are given after the plates' size (absolutely NO compound angles!). There are 2 woofers arrayed vertically firing through the throat cutouts in panel "A" down the first throat flares (plates B & C are parallel, 4 of D expand the throat to the first U-turn, hopefully the rest is clear). The yellow line is the centerline of the throat. The red outlines are the mathematical profile of the "ideal" initial throat expansion. If you check out the gallery there is more info on how to position this design so that 2 cabinets' response can extend from 24 to 320 Hz @ +/- 0.75 dB (predicted per McBeans' program). A dado is a shallow groove (width = panel thickness) cut in a panel, a rabbet is a shallow groove cut along the edge of a panel. They are used to both locate and strengthen panel connections (generally at right angles). To get everything on 1 page I left out a lot of info. I hope this helps. I will start adding drawings (to the gallery page) of each panel as I find time over the next week or so. Two of these will be very large (25.67 cubic feet for each cabinet). Quote Link to comment Share on other sites More sharing options...
Jeff Robinson Posted February 20, 2001 Share Posted February 20, 2001 I've got most of the panel cutting drawings posted on my webpage, link from the gallery page. Quote Link to comment Share on other sites More sharing options...
khorn58 Posted January 5, 2002 Share Posted January 5, 2002 Electrovoice made a 18" SUPER KHORN in the 50,s I think it was call a particion(sPELLING?). This klipsch licenced horn system is consered my many to be one of the finist speakers aver made. I have seen a few on ebay go for big bucks. Quote Link to comment Share on other sites More sharing options...
khorn58 Posted January 5, 2002 Share Posted January 5, 2002 Forgot to say the Electrovoice horn goes down to 18hz and is about 1/3rd bigger. which in a corn dos'nt really take up that much more room. Id love to find a pair and then i would use my khorns as rears Quote Link to comment Share on other sites More sharing options...
mike stehr Posted January 5, 2002 Share Posted January 5, 2002 Didn't EV make a 30'woofer with a cabinet the size of a refridgerator? The Patrician is some great looking vintage speaker, I bet they sound as well. Those old Bozaks were cool looking furniture wise also, JBL's, etc... Real speakers. THANX! Quote Link to comment Share on other sites More sharing options...
TBrennan Posted January 5, 2002 Share Posted January 5, 2002 Mike---Ah yes, the famous EV 30-W, they comeup on ebay once in awhile and sell for several hundred. I have plans from EV for this driver in which the front baffle is an entire 4X8 sheet of plywood, big driver in a BIG box. I heard them a couple of times, very good woofer. Early Patricians used an 18 in a folded cornerhorn, later ones used the 30W. Go to www.audioheritage.org for pictures of the Patrician sold in Japan long after EV stopped selling them here, a Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted January 7, 2002 Share Posted January 7, 2002 Neat page with pics of The Patrician as well as other offering that look compelling. http://community-2.webtv.net/KerrB/VINTAGETUBEAMPHORN/page4.html kh system one online / alternate components / asylum listing f>s> Quote Link to comment Share on other sites More sharing options...
mike stehr Posted January 7, 2002 Share Posted January 7, 2002 Ah, there's that site. I always lose this one. Bookmarked. Waddya think of Micheal Christ's system with the Edgar Tractix horns? Quote Link to comment Share on other sites More sharing options...
mike stehr Posted January 7, 2002 Share Posted January 7, 2002 I know the Ears replied to Tom's post about Audio Heritage. (He liked the K2's.) And Tom's post seems to be chopped off. ???!!! Are you moderating, Kelly? Quote Link to comment Share on other sites More sharing options...
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