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Khornukopia

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  1. Khornukopia
    AK, AK-2 and AK-3 crossovers on Klipschorns normally have two pairs of speaker wire terminals mounted on the woofer access panel. Speaker wires from your receiver-amplifier plug into the lower binding posts labeled "Audio input" and the wires from the high frequency section of the crossover plug into the upper binding posts. If someone is planning to examine the crossover, they should be aware of the parts mounted on the inside of the woofer access panel.
  2. Khornukopia
    Some bass reflex cabinets have flared port tubes to minimize turbulence. The Klipsch Reference Premiere speakers use Tractrix geometry on the port tube ends for "the most efficient, fastest air transfer from the cabinet". Is it conceivable that flaring, or rounding over the edges of the woofer port holes on a multiple entry horn (or a Klipsch horn-loaded woofer chamber throat) could benefit the speaker's performance?
  3. Khornukopia
    The Tannoy dual concentric coaxial driver loudspeaker is called a point source design and they do sound good, but when I did a casual A--B afternoon listen session a few months back with a pair of passive K-horns in the same room, I still liked the K-horns better. I was actually comparing several amps that day, not speakers. Maybe I'm not keen enough to appreciate the Tannoy, or it could be my personal bias, but now that I know how you guys like your point source multiple entry horns, and that I might need to get one or more myself, I am wondering why is it that more speaker builders don't utilize dual concentric, coaxial drivers on their direct radiator designs? For hypothetical example, a Cornwall cabinet with a single Radian 5215 physically time aligned point source coaxial woofer-tweeter?
  4. Khornukopia
    Thanks for the explanation. I think about this speaker design often and therefore have many questions, but some become slightly off topic, or some questions might appear cynical in writing, so I don't ask because I respect what you are doing. I look forward to more progress reports.
  5. Khornukopia
    It is good to read that you plan to replace all the speakers in your home theater with copies of your New Center design. Will they all be identical, or might the surround speakers use different drivers or port configurations for experimentation? The Jubilee bass bin has 2 twelve inch woofers, why does the New Center need 2 fifteen inch drivers?
  6. Khornukopia
    Are you explaining a modification to the original design of your New Center speaker, or are you describing the development of a production line for a thoroughly tested, state of the art, Multiple-Entry speaker?
  7. Khornukopia
    I have NOT had a problem with any tweeters on my tri-amp set-up, but this does concern me as a potential problem. Is there a chart or guide to select the correct filter cap per application, a recommendation on capacitor type, etc.?
  8. Khornukopia
    There is only one K-402-Based Full-Range Multiple-Entry Horn for us to read about, so the comments about somewhat comparable speakers owned by forum members whose opinions we trust gives me a frame of reference that enhances my interest in the New Center speaker. This design does stir up a lot of questions and I enjoy reading everybody's comments, but I respectfully agree about keeping the thread on topic, and I hope that none of my posts have been too far out of line. The K-402 horn and driver combo available at American Cinema Equipment comes with the K-69. Is this the HF driver used on the New Center? In my e-mail exchange on Monday with Spencer, I asked his permission to post his reply on the forum and he said yes, but to omit the price of the K-402 / K-69 combo, as it is subject to change, but someone else had already posted their copy of his reply, price included on the Tads and 402 thread.
  9. Khornukopia
    During the weekend I decided that the reported price on the K-402 was to good to pass up, so I would order a pair and store them until I could start a build later this year, but on Monday I received an e-reply from Spencer Chao that the K-402 was no longer available for sale as a horn only. Although disappointed that I missed out on the deal, I was also slightly relieved that my Klipschorns were not to be moved yet, because they have been sounding very good since adding the digital electronic crossover and the tri-amps last year. Still, the Full Range design is so logical that is very easy to be distracted with the thought of building a pair someday and then re-arranging the placement of several large speakers in my listening room, so please keep writing about how good they sound.
  10. Khornukopia
    I appreciate all of you smart guys explaining things in ways that are easy for me to understand. I am not an engineer, but I listen to a lot of music in many different environments just for fun, and I find the subject of loudspeakers very fascinating. Most of you are long time forum friends and I'm sort of a freshman around here, so I think a fairly recent picture of me standing next to one of my favorite singers might be a favorable way to present myself to the forum, because it is said that standing next to a pretty girl makes a guy look good.
  11. Khornukopia
    The wires to the tweeter and midrange driver and the AK-2 crossover are all soldered connections from the factory. I would not cut any wires just to hook up an ohmmeter. You can place a piece of cardboard across the grill cloth to block the mouth of the midrange horn, to isolate the tweeter sounds. If the tweeters tweet, and music sounds right, chances are very high that everything in your K-horns is in good condition. Even if the tweeters need repair, chances are still very good that everything else is in great condition.
  12. Khornukopia
    Obviously, the patterns for the K-402 look good, allowing it to operate as a full range, multiple entry horn. Just for clarification, when you write about collapsing polars of the K-400 type horn, does that refer to the narrowing dispersion pattern as the frequencies get higher?
  13. Khornukopia
    I was looking at the picture of the backside of the K-402 horn in post #5 of the Corner-Horn Imaging FAQ thread, and as I re-read the explanation about collapsing polars I wondered if there is a link to an illustration showing the differences of this effect between something like the K-400 and the K-402.
  14. Khornukopia
    Considering the fact that this thread is about the development of the K-402 based Full Range Multiple Entry Horn, which may become THE best sounding loudspeaker for accurate, dynamic music reproduction, I want to expound on the statement I made earlier. The La Scala sounds very good outdoors... for casual listening such as a neighborhood block party or while working in the garden. It also sounds very good outdoors, compared to how it sounds when played at high SPLs in a small reverberant listening room.
  15. Khornukopia
    DrWho, Thanks for providing the above links. The papers were good reading, but I did skip much of chapter 4 with all the equations that I don't plan to use.
  16. Khornukopia
    It will be interesting to read about your listening impressions of your New Center speaker after you get a chance to take them outdoors. In the past, I have noted that the La Scala sounds very good outdoors.
  17. Khornukopia
    I have been reading through a lot of specs lately and noticed the following info. The newest Model KPT-MCM-II Cinema speaker brochure specifies the KPT-305-MB now employs a 12" driver operating at a bandwidth of 340 Hz - 1520 Hz.
  18. Khornukopia
    38" X 9" Klipschorn bass bin horn mouth, each side X 2, for a total of 38" X 18". It helps me understand the K-402's capability now that I realize how comparatively big it is. Thanks for answering my questions.
  19. Khornukopia
    So many good speakers to choose from. Each style has its ideal placement and SPL range, which makes it possible for any good speaker to sound more pleasing than some other "better" speaker in that same room. It is always nice to have something that you really like.
  20. Khornukopia
    Not upset at all, more like impressed. If not for my infatuation with the good looks of my Klipschorns, I might be buying parts for a K-402 full range system already. In the meantime, am wondering why straight axis bass horns of the past needed to be so very much larger? What is it about the Unity/Synergy style and your Klipsch K-402 based full range horn that defies past limitations? Is it the slight flare at the end of a short cone? If one added this flare extension to the exit of a La Scala, K-horn or Jubilee, will it transform into a profoundly superior speaker? Your project now has me thinking about loudspeakers more than I normally do.
  21. Khornukopia
    Are you saying that a 20" deep conical-tractrix horn with two 15 inch woofers is able to perform equal to, or better than a 55" exponential horn path length Jubilee or K-horn bass bin? Some of us sentimental folded horn proponents may need more time to comprehend the simplicity of this.
  22. Khornukopia
    I like it, your K-402-Based Full-Range Multiple-Entry Horn, design.
  23. Khornukopia
    PWK's workbench.
  24. Khornukopia
    70th Anniversary Klipschorn on display at CES.
  25. Khornukopia
    Ok, thanks for the guidance. Wow, these improvements to my overall sound are making me want to stay home even more, but I must exercise moderation in all my favorite activities! Here is a picture of my listening room that I posted on another thread last year, for any viewers who had not seen it there.
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