pzannucci Posted September 12, 2019 Share Posted September 12, 2019 9 hours ago, 314carpenter said: I agree with this statement so much it is worth repeating a third time. This is why I am a proponent for developing a Chorus III. Now I would like to hear thoughts on baffle diffraction and edge diffraction in a large box. My 30 year old JBL 250Ti solve those cabinet diffraction issues, are internaly braced and filled, and look good all at the same time. The only thing getting in the way of utilizing these well known solutions to well know issues, that I can come up with, is cost and profit margin. Actually it is the box not the diffraction. Box needs to be massively braced due to the large panel sizes. In actuality, width of the board the woofer is on needs to be as big as possible to reduce baffle step issues. One thing that is somewhat compensated for by putting the woofer closer to the floor. Quote Link to comment Share on other sites More sharing options...
Khornukopia Posted September 12, 2019 Share Posted September 12, 2019 Just looking at pictures of the new Cornwall IV makes me happy. 2 Quote Link to comment Share on other sites More sharing options...
jjptkd Posted September 14, 2019 Share Posted September 14, 2019 On 9/12/2019 at 12:32 PM, Khornukopia said: Just looking at pictures of the new Cornwall IV makes me happy. Yes, me too that mid horn was long overdue maybe patience will have paid off with all the other advancements that seem fairly new? Quote Link to comment Share on other sites More sharing options...
BeFuddledinMn Posted September 14, 2019 Share Posted September 14, 2019 It looks and sounds as if the new Cornwall IV is a major improvement. A couple of thoughts come to mind: First, given the relatively high distortion generated by tuned port vs. horn loaded bass in the lower end, it’s curious that the cross to midrange is still kept relatively high in the new Cornwall IV. As an owner of Cornwall I’s with solder lug K-55’s and B2 crossover design, it would be interesting first and foremost to see a distortion comparison between the two from say 30hz to 800hz. Second, does the introduction of the new mumps tractrix midrange on the Cornwall IV in addition to the Forte III, implicitly confirm the obsolescence of the k-400 to k-700 series of exponential horns? Lastly, given the new bass porting and midrange horn, is the new Cornwall IV now getting close to, or better than, the Lascala and Klipschorn in midrange clarity, and significantly closer to their bass distortion performance? Paul Klipsch used to market the smaller Heritage speakers as 2/3 Klipschorn. Are we now being offered, say, 8/10th’s at half the price? Looks like another great job by Roy and the Klipsch organization. Quote Link to comment Share on other sites More sharing options...
boom3 Posted September 14, 2019 Share Posted September 14, 2019 BeFuddledinMn said: "Second, does the introduction of the new mumps tractrix midrange on the Cornwall IV in addition to the Forte III, implicitly confirm the obsolescence of the k-400 to k-700 series of exponential horns?" The K400/401 was sized to fit in the existing top hat of K-horn (sized to fit the original K-5 series). Everyone agrees that the K401 is too small. To change it to a larger horn would require making the top hat significantly bigger, which would change the proportions of the Klipschorn. It seems that Klipsch was not willing to do that. As far as "obsolescence" goes, Klipsch has been moving to tractrix for a while in other products. So, yeah the rest of the exponential horns are being slowly obsoleted, but the proportions of the Klipschorn seem to restrict that system to the K-401 for the foreseeable future. I don't know what kind of crossover design Roy used to tame the K55/401, but from Stereophile's review, which of course was botched, it looks less jagged than the response Heyser measured in 1982. Of course, it is risky to compare measurements between two different set-ups seperated by 37 years of time. Quote Link to comment Share on other sites More sharing options...
Seadog Posted September 15, 2019 Share Posted September 15, 2019 On 9/10/2019 at 3:28 PM, HDBRbuilder said: ABSOLUTELY NOBODY IN HISTORY can beat the Brit cal .303 Lee-Enfield rifles model designations in confusing anybody...I think they INVENTED confusing designations, even to the point of RE-DESIGNATING specific models more than once!! The Brits even have Harley-Davidson's "alphabet soup" model designations beat hands-down!! My favorite is the Lee Enfield No. 4 MK1 which I shoot in the CMP matches. But back to the CW4, I would love to hear an A-B with the CW1 (and with the Forte III). I was never too keen on the CW3 mid horn. I suspect the CW4 will be considerably smoother than the predicate models as you crank 'em up loud. 1 Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted September 15, 2019 Share Posted September 15, 2019 On 9/12/2019 at 3:32 PM, Khornukopia said: Just looking at pictures of the new Cornwall IV makes me happy. Me too. It's nice to see Klipsch finally going to an Axpona-type show. Relative to the myriad of "outrageously overpriced little boxes with little woofers" Klipsch Cornwall and Heresy stomps them on a "quality sound per dollar" basis. I've seen people charge $15,000 for a pair of bookshelf speakers that are bested by a $600 pair of Klipsch RP-600M's you can get on Amazon with free delivery to your door. Also please note that NO ONE in any audio company I know of ever talks about Intermodulation Distortion, for which, among other things, PWK received an AES Silver Medal of Honor. 1 Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Chief bonehead Posted September 16, 2019 Klipsch Employees Share Posted September 16, 2019 On 9/15/2019 at 11:10 AM, Arkytype said: boom3 wrote: So, yeah the rest of the exponential horns are being slowly obsoleted, but the proportions of the Klipschorn seem to restrict that system to the K-401 for the foreseeable future. Dave Harris' Eliptrac 400 horns fit nicely in my Klipschorns. K400 upgrade? Check. Tractrix expansion. Check. 2" driver throat. Check. Lee Constant coverage...chhhhh....oops. Not a klipsch designed horn so not the same. 2 2 Quote Link to comment Share on other sites More sharing options...
mustang_flht Posted September 17, 2019 Share Posted September 17, 2019 A bit off topic, but I have a question for @Chief bonehead; are there any Klipsch changes you like? (He may not be able to answer me, or with a mysterious sentence of which he has the secret 😆) It must be nice to be the Chief of speakers who have fans around the world (I'm in France) and tweak them, a bit like a Mustang or a Harley, lucky! 😎 1 Quote Link to comment Share on other sites More sharing options...
pzannucci Posted September 17, 2019 Share Posted September 17, 2019 1 hour ago, mustang_flht said: A bit off topic, but I have a question for @Chief bonehead; are there any Klipsch changes you like? (He may not be able to answer me, or with a mysterious sentence of which he has the secret 😆) It must be nice to be the Chief of speakers who have fans around the world (I'm in France) and tweak them, a bit like a Mustang or a Harley, lucky! 😎 I would think he likes the changes since he designed it :-) 1 Quote Link to comment Share on other sites More sharing options...
capo72 Posted September 17, 2019 Share Posted September 17, 2019 45 minutes ago, pzannucci said: I would think he likes the changes since he designed it :-) Since @mustang_flht is French and his English is approximate, I interpreted the question as: Are there any DIY mods or tweaks to Klipsch speakers that @Chief bonehead likes. Not as: Does Roy like the changes Roy made. 1 1 Quote Link to comment Share on other sites More sharing options...
pzannucci Posted September 17, 2019 Share Posted September 17, 2019 5 minutes ago, capo72 said: Since @mustang_flht is French and his English is approximate, I interpreted the question as: Are there any DIY mods or tweaks to Klipsch speakers that @Chief bonehead likes. Not as: Does Roy like the changes Roy made. If that was the question, then the answer may be interesting. 1 Quote Link to comment Share on other sites More sharing options...
mustang_flht Posted September 17, 2019 Share Posted September 17, 2019 53 minutes ago, capo72 said: Since @mustang_flht is French and his English is approximate, I interpreted the question as: Are there any DIY mods or tweaks to Klipsch speakers that @Chief bonehead likes. Not as: Does Roy like the changes Roy made. Yesss 😁 I thank @capo72 (Argggg !!! I can not highlight in blue) for his help, and yes my English is approximate: Are there any DIY mods or tweaks to Klipsch speakers that @Chief bonehead likes. that's what I wanted to write 👍 1 Quote Link to comment Share on other sites More sharing options...
jjptkd Posted September 17, 2019 Share Posted September 17, 2019 9 hours ago, capo72 said: Since @mustang_flht is French and his English is approximate, I interpreted the question as: Are there any DIY mods or tweaks to Klipsch speakers that @Chief bonehead likes. Not as: Does Roy like the changes Roy made. He obviously liked the rear ported Heresy idea that has been floating around the forum for a few years now... 1 Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted September 18, 2019 Moderators Share Posted September 18, 2019 3 hours ago, jjptkd said: He obviously liked the rear ported Heresy idea that has been floating around the forum for a few years now... Are you drawing a line from ideas on the forum to ending up in a Chief Bonehead design? PWK worked on rear porting since at least the late 1950s. The Museum has PWK's Port-O-Matic he designed and built for the testing of rear porting. Roy was mentored by PWK. Roy has over a half-dozen patents in acoustics including @Chief bonehead, none of which came from an idea floated on a forum. Not sure what's obvious . . . Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted September 18, 2019 Moderators Share Posted September 18, 2019 4 hours ago, Arkytype said: Chief bonehead wrote: Constant coverage...chhhhh....oops. Not a klipsch designed horn so not the same. So, you've measured an Eliptrac 400? If so, please share your data. Lee I think he can pretty much look at it and tell what the DI and the polars are going to be. Who knows, he and Dave may have talked about it over a beer. 1 Quote Link to comment Share on other sites More sharing options...
moray james Posted September 18, 2019 Share Posted September 18, 2019 On 9/11/2019 at 5:07 PM, ClaudeJ1 said: I thought the Khorn was the Corvette, and the Cornwall was the Camaro! Then the Cornwall 4 must surly be the Firebird given its all new (s)porty flash! Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted September 18, 2019 Moderators Share Posted September 18, 2019 28 minutes ago, moray james said: Then the Cornwall 4 must surly be the Firebird given its all new (s)porty flash! So 1946 it would have easily have been the Chrysler Continental Coupe, A speaker introduced in "59 would probably be a Corvette. Quote Link to comment Share on other sites More sharing options...
billybob Posted September 18, 2019 Share Posted September 18, 2019 Or and a Lincoln... thanks Quote Link to comment Share on other sites More sharing options...
glens Posted September 18, 2019 Share Posted September 18, 2019 What's wrong with a T-bird? Quote Link to comment Share on other sites More sharing options...
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