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Everything posted by CANT

  1. I would absolutely agree that the switch to the Heppner driver appears to have happened as a cost cutting measure? The Heresy and Cornwall do not command the same $$$ as the La Scala or Klipschorn so keeping the cost down would definitely help them stay competitive in the market place. The K52 is also a VERY good driver, so I do not consider this change a degradation of quality. It is important to remember that the move to the Heppner driver came with some important changes to the network (E2 & B3). Yes, the K55 has better response below 600hz and you can here that difference which means that the way that driver integrates with the woofer is different. This is not just an SPL issue. A lot of those older networks were deceptively simple but that does not mean that they were just thrown together without careful consideration of their implementation.
  2. Were you a part of the development team for this driver? If you were then I feel like that should be noted as it could present a potential bias. If you weren't then I'm not sure how you can speak with such certainty about the time and/or money that went into the development of the driver? I should clarify that it's not that I believe a product like this doesn't take time and money, I know for a fact that is does but I do feel that the numbers are stated in a way to express or imbue a sense of quality. Ad speak. John Allen also very much owns/runs a company that produces a line of Klipsch Heritage knock offs so producing his own driver could absolutely save him some money in the long run? Especially if he also sells the driver in the aftermarket as a Klipsch upgrade, further offsetting the development cost. And thank you for the information on the data collection.
  3. Please see my response in the aforementioned Forte II thread for applicable issues
  4. Ok, so back to this... the primary issue here is that while the flange at the end of the horn is a mounting flange for the K52 motor assy (diaphragm/magnet) it is NOT the beginning of the horn. The horn actually starts about 1.5-2in up from that flange. This is why the commercial/pro version is shorter. That 1.5-2in is the compression chamber that the phase plug normally resides in. Essentially whats happening here is that at the end of the driver pictured the wave form is being allowed to expand and then is being re-compressed before then travelling through the horn throat normally... it's not a desirable thing and is very likely introducing a fair bit of distortion.
  5. Again, while probably realistic, "10 years and $150k" is very much ad speak... no one really knows how much he spent exactly? and 10yrs could be 10yrs off and on in his free time? Also, while he seems to be charging a pretty penny for these via aftermarket, the primary benefit of producing his own driver would be production cost savings for his speaker line. You can google "HPS4000" if you want to check out his companies page. As for your reply to my question on the displayed measurements... I think you got confused. While I would like to see tests on other Klipsch horns (the posted graphs used a K401), I was actually asking how many drivers were tested in the collection of the displayed data. Was it the avg of 10 or 20 drivers? or just one of each? I ask because if it was just one driver a piece the touted benefits could be negligible as other drivers from either production company could measure slightly better or worse? I mean we aren't talking about an earth shattering difference in the first place? If multiple drivers were used how do I know that the best A55G isn't being compared to worst K55 they could find? The data appears to come from either Al, Dean or Bob... none of whom I believe would purposely try to deceive anyone on this form but I would still like to see more relevant information. I really mean no offense... I just tend to always approach these types of things with a health dose of skepticism. I mean the K55/PD5V is an excellent driver (also a clone of the Western Electric 555) but that doesn't mean I want to use it on every horn or in every application that requires a roughly 400-5kHz response? I may prefer the voicing of driver X for certain projects or just want something different now and then? Actually, if the A55G was just mentioned as an alternative to the K55 rather than the universal upgrade of a life time I'd likely be less skeptical because nothing is universal and the A55G/K55 is very different from the K52.
  6. I don't have time to explain right now but this is a terrible idea! Just because you can throw an adapter on it and it makes sound does not mean you should! This actually reminds me of a quote...
  7. I actually asked this in another post and never got an answer but how many drivers were tests in collection of this data? Is this a one to one comparison or avg of a batch? Which version of the K55 was used and was it new/nos or did it have several hours on it? Though I am not in the market, if I were I would personally be concerned that the 0.58%THD reduction being touted is just ad speak and may not be any better or worse than the manufacturing tolerance either drivers QC might allow? I have definitely owned enough K52/55's to see what I would consider noticeable variances and the aftermarket can definitely be worse! I would add that you might want to also consider testing the drivers on a K700 and/or K600 so that you can include actual data from a series of K52... if the A55G is going to discussed as an adequate replacement for that driver
  8. I’m going to second Nikko components. I currently have or have owned an Alpha II, Alpha III, Alpha 130, Alpha 220, Beta 20, Beta 30, Beta 40, EQ I, EQ 20, CO 23, and a couple integrated amps that I can’t remember the model numbers of... all have been fantastic pieces, well designed and generally easy to work on/recap. I am also currently running a Marantz 1070 upstairs with what I will call a modified pair of Heresy’s and enjoy it. It replaces a Sansui AU317 that I also liked quite a bit but needs work currently. Despite both amps pushing relatively low wattage, I’ve never turned either up past 50% and both have had excellent bass response. I would like to, at some point, check out a few power/pre-amps from both brands... though I am thinking my next acquisition will be either a McIntosh MAC4100 or MC250 or both?
  9. Big thanks to jjptkd for helping me out in acquiring the second K603!
  10. Working iteration 5... or 6? I can’t remember at this point....
  11. If I remember correctly the KG4 has roughly the same internal volume as the Heresy... I know I had at one point considered doing the same thing to a pair of HII using KG4 radiators mostly because I had the parts lying around.... You might just try a different amp though? The HIII doesn't have the low end response of the Cornwall obviously but you shouldn't be missing that much?
  12. Some accompanying notes: 1. While the entire snout assemblies are swappable the diaphragms themselves are not. 2. Even though the K63/64 snout does bolt on I do not think it could support the weight of K60's magnet
  13. And here are the snouts and magnets swapped...
  14. In a post I made a while back, in which I was selling a couple Epic Series drivers, I mentioned that that said driver appeared to be based on the DH1506/DH2 family of drivers... To help explain that comment I thought I would post some pictures K60M/DH1506 Magnet K60M/DH1506 Snout Assembly K63KN/K64KN Magnet K63KN/K64KN Snout Assembly
  15. I've updated the post... only one left now
  16. Yeah, I personally think that the bright/detailed nature of the Ti is one of the reasons they may have raised the crossover points of the HIII and CWIII... bringing in a bit more of the woofer for warmth. I've switched back and forth in my CWI/III's and actually like both diaphragms for the reasons stated reason. This back and forth is actually one of the reasons why I started the topic on the 127120 to try and see what other peoples opinion of it were in relation to its design/material updates. Not that I can ever seem to take any ones word for anything and will likely just end up just trying them out for myself... I will also one day try out the K66E/PSD2002-16 as a K52 replacement. I have tried the PSD2002-8 as a tweeter and didn't much care for it but the idea of using this driver as a mid is interesting?
  17. This actually wouldn't be a bad thing to get an update on... My guess would be that it is somewhere near $400 now though
  18. Yeah... http://www.critesspeakers.com/speaker-cabinets.html http://www.critesspeakers.com/cornscala.html
  19. If you reused the original K74 magnet then no, nothing should need to be done at all. If you switched to the K100 magnet you might want to pad it down with a resistor as it is a bit large and has a slightly higher output, though you could just as easily like the extra output. The K90 is slightly smaller so it has just a hair less output so you would have to want that outcome. I know I tried both back in the day but can't remember which I preferred... I do know my original K74 magnets are sitting in a box in my garage so I preferred one of them. Basically, the K90 is the same magnet as the K76 found in the Heresy II, Quartets and a few other KG's... the K100 is the same magnet as the K79 from the Corwall II, Forte's, Chorus' and KLF's. The K79 magnet is also used in the K107Ti found in the HIII/CWIII and the somewhat confusingly named K100Ti/K79T found in the Forte III. I should also point out that if I remember correctly the suffix for the K90 is KV so it would be Video-shielded.
  20. Links for OEM parts Ti Tweeter Diaphragm $36.95ea Ti Midrange Diaphragm $79.50ea Phenolic Midrange Diaphragm $59.50ea
  21. 1. Ti tweeter diaphragm - #1 most noticeable mod without a doubt, in nearly any classic Klipsch this update is available for 2. Ti midrange diaphragm - Some people think this can make their speakers a bit too bright, other find it brings clarity and detail. I thought my KLF20's were already kind of bright so I'm not sure I would go Ti in those but that's just my opinion. If bright is a concern in either application you could also try new phenolic diaphragms? Some people might also suggest a K55V or A55G swap in the KLF's, I'm not a fan of either idea but again that is my opinion. I do believe, no matter what you might choose to do, that changing the midrange driver or diaphragm is absolutely #2 in the scope of noticeable changes 3. Updating Capacitors - I'm mostly referring to the one on the mid and 2 on the tweet. I believe changes to these can go in all sorts of directions, good and bad. I've swapped all sort of things in for the one cap in the LF network and never noticed a thing? My general rule of thumb is to keep the values at or under the original for the tweeter and at or over for the midrange. I also tend to keep things pretty reasonable in this category... there are lots of great caps that don't cost as much as the speakers themselves... and you can also always just add bypass caps 4. Replacing the Tweeter inductor & resistor - If you can fit it or are going to move the crossover to a new board a better inductor and resistor can be nice but you are starting to get down there in the scope of what you will really notice 5. Replacing the autoformer? - I thought the T2A sounded better than the T7A in the KLF's and the Crites pieces were better than the T2A but the change wasn't huge so...? 6. Replacing the LF network components - As far as I'm concerned you only do this if you are a completest or just for fun. If there was a change I've never noticed it.
  22. I know this is a slightly older thread but I have to say I was really happy to see some Nikko love! I've been collecting their components for some time now and have been very happy with an assortment of their equipment!
  23. Yep, same plug. While the main apertures are basically drilled straight down, those smaller ones are practically drilled straight through the side. A few years back I actually came across a one piece molded phase plug/diaphragm that had that same plug variation, not sure where it went though? If I remember correctly, that plug has slightly higher output above 5kHz but nothing too earth shattering.
  24. I almost forgot about the Magnet... The black one is an original Heppner which was potted in a metal bowl/bell/not sure what to call it? The first Klipsch parts where produced with the same flat pole piece but structurally looked more like the current part. Then at some point they moved to what you see in the second photo.
  25. The K703 (1-3/8"-18) is also used pretty commonly in the larger Pro/Cinema 3-way systems (KPT335, KPT435, KPT445)
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