Klewless Posted March 31, 2005 Share Posted March 31, 2005 I could be mistaken, but I believe Klipsch (partly) designed the vertical Cornwalls so that they could also be used in a "low-boy" configuration. This was pretty common in speakers yesteryear. Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted March 31, 2005 Author Share Posted March 31, 2005 Guys, A defraction horn has to be mounted in the vertical direction. You can tell them by their flat sides and a big curve in the other plane. One illustration I saw in a book one time (it was a T35, I think) showed the sound bouncing off the flat sides around the room. The fact is that any horn seases to act as a horn above some frequency. I think the t35 is at that point above 6000 Hz. At that point it's just a direct radiator. The K700 Horn in the Heresy also should have been mounted vertically. Many people have turned their Heresys on their side and noticed an improvement in the dispersion. I have some old Klipsch literature that shows the vertial horn Cornwall and the optional horizontal kick base. It shows and describes it as "shown in it's preferred vertial postion", or words like that. BTW: I definitly would believe a manufacturer will make a change to keep customers from objecting to an unimportant factor rather then having to continuously explain why they do it a particular way. Besides, consider the "pain in the butt" factor of making mirror images sets for stereo! Al K. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted March 31, 2005 Share Posted March 31, 2005 now I'm really confused. If the K77 HAS to be vertically oriented, as it was properly in the vertical Cornwall, then the horizontal base was available, that would put the tweeter (possibly squawker also) in the WRONG orientation again... I've started a new thread with this question in tech forum to avoid clutering Al's Tractrix thread.. Sorry.. Michael Quote Link to comment Share on other sites More sharing options...
Deang Posted March 31, 2005 Share Posted March 31, 2005 "Here's a segment form an ElectroVoice flyer. Note the T35 is shown vertically. I have never seen it shown any other way by ElectroVoice. Note to it is intended for 3500 Hz and up. At 6000 Hz it doesn't matter how you mount it!" Cool. Thanks Al. Quote Link to comment Share on other sites More sharing options...
BEC Posted March 31, 2005 Share Posted March 31, 2005 Here is a test data sheet from some of the last T-35As built by EV. Just looking at figure 2 below, looks like we could generalize this subject a bit as to which way to mount the tweeter. If I read this correctly, it seems if you want to hear the frequencies up to 15 khz, you have to be inside a beam width of 50 degrees regardless of how the tweeter is mounted. If that fits your desire for listening (to be able to hear the highest frequencies) then it does not matter which way you orient the tweeter. Bob Crites Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted March 31, 2005 Share Posted March 31, 2005 Thanks Bob, would love to see data sheet like that for the K-series horns. If the Cornwall horn was intended for vertical use, then I don't understand how the similarly (?) shaped Khorn and LaScala horns are correct horizontally. Got another thread going under Technical for the hornspeak Thanks, Michael Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted March 31, 2005 Author Share Posted March 31, 2005 Guys, NEWS FLASH! Here's the first pictures of the Trachorn prototype. This is before paint. I expect it to be painted black or brown. Al K. Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted March 31, 2005 Author Share Posted March 31, 2005 Here's another view. Al K. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted March 31, 2005 Share Posted March 31, 2005 Very nice indeed! Quote Link to comment Share on other sites More sharing options...
3dzapper Posted April 1, 2005 Share Posted April 1, 2005 Sweet! Quote Link to comment Share on other sites More sharing options...
J.4knee Posted April 1, 2005 Share Posted April 1, 2005 That is looking very nice indeed. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted April 1, 2005 Share Posted April 1, 2005 awww shucks, 3d stole my word- SWEET just came to mind! How dey bend wood like dat? Michael Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted April 1, 2005 Author Share Posted April 1, 2005 Mike, You use a big crowbar! Nah.... It's two layers of thiner stuff. The first layer is 1/8 inch thick. The outer one is 3/8 thick bendable plywood. Al K. Quote Link to comment Share on other sites More sharing options...
dubai2000 Posted April 1, 2005 Share Posted April 1, 2005 Al, just a thought....how about some other colours as well?, I mean I really like....Altec green or dark red (like you could find on some British sports cars)? Wolfram Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted April 1, 2005 Author Share Posted April 1, 2005 Wolfram, The paint job is a real question mark now. Just think about painting that thing. It would be all kinds of fun getting down inside the throat and into all those little corners! Al k. Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted April 1, 2005 Share Posted April 1, 2005 I like the natural look. Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted April 1, 2005 Author Share Posted April 1, 2005 Dee, I like the natural look too, but there's glue sticking out here and there plus there's the humidity issue. Something needs to put on it to seal the wood. Since it is NOT made to be pretty wood grain, it might as well be black or brown. Fancy wood would cost two or three times the price and wouldn't sound any better! Al k Quote Link to comment Share on other sites More sharing options...
J.4knee Posted April 1, 2005 Share Posted April 1, 2005 If black or brown are the obvious choices, I would say why buck tradition ... go with black. Just my opinion. Quote Link to comment Share on other sites More sharing options...
dubai2000 Posted April 1, 2005 Share Posted April 1, 2005 Al, I see your point. I guess if I had to choose between brown and black I'd also choose black.....but Altec green is SO much nicer . Wolfram Quote Link to comment Share on other sites More sharing options...
D-MAN Posted April 1, 2005 Share Posted April 1, 2005 I think spraying is in order. Clear poly would look nice! Al, those look great! DM Quote Link to comment Share on other sites More sharing options...
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