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Everything posted by boom3

  1. Ummm...why the tape on the level controls?
  2. If we go back to PWK's original paper on the Klipschorn (which is in my storage unit right now) , it looks to me like he set the taper rate not for the physical length of the horn as it is, but as it would be if it was a straight horn. In other words, for the horn "magnified" (my term) by the corner .
  3. One of my favorite authors, William Manchester, wrote an excellent and very balanced biography of MacArthur, "American Caesar". Also, he wrote the best book on the individual experiences of a man at war, "Goodbye Darkness" in which he interweaves his story of being a Marine in the Pacific theatre with his dealing with PTSD after the war.
  4. Interesting that Paul never tried (that I know) to one-up the Patrician. I did read a Dope from Hope where Paul wrote that if he went to more powerful drivers, deep nulls would show up in the response not to mention even bigger cabinets. PWK never understood (nor do I) why a home listener would not be content with a maximum output of 121 dB.
  5. One nuance of the design video deserves some comment. The Klipschorns, when tucked into corners, look smaller than they appear straight out of the box. Emphasizing the "stance" by the riser (which protects that nice veneer from vacuum cleaners and feet) and pulling out from the corner (not my notion of proper operation, enclosed back not withstanding) makes them look bigger, more in-you-face.
  6. Could this extra "mystery length" be the width of the front panel where the two paths join?
  7. I wonder if horns are subject to the "end correction" practice (?) (theory?) that is used to fine-tune vents and T/Ls. The end correction for vents is usually assumed to be the length that is equivalent to the circumference of the vent. In other words, the mass of air existing the vent is, for some distance, still about as compact as it is inside the vent, and therefore the effective vent is longer than the calculated vent, meaning the vent tube must be shortened. I would think this would not apply to the Klipschorn, unless we count the distance across the front of the bass bin where the two horn paths converge.
  8. Yes. I donated my fathers South Dakota National Guard 1938 yearbook to the SD Historical Society.
  9. Do you have link to official announcement for a Cornwall IV? Can't respond to the poll without knowing what it is, a quick search of the forum turns up only speculation...
  10. We wound up getting the Sennheiser PXC-550, which is as I understand it is at lighter version of the Momentum, configured for travel. I've worn them for several hours with very little fatigue. The sound quality is very good but I am reluctant to offer opinions based on 63 year old ears that don't respond over 13 KHz any more. I did download the CapTunes app that lets you EQ and add effects. The major downside is that to use the EQ and effects you have to play your locally stored music through the app. Just using iTunes on your phone you get the headphones' intrinsic response, which is fine. My custom EQ via CapTunes has a gentle rise above 8 KHz to compensate for my hearing. The noise-cancelling feature has not really been tested yet. Hopefully this weekend we will try it with the mower and the next week in air travel. The telephone function works well, but the first time I used it I started to scratch the back of one ear and disconnected my call. The controls are tiny and not all that intuitive. The swipe up/down for volume is convenient as is the talk-through feature and music pause when headphones are removed. These are not only Bluetooth but Near Field Communications (NFC). Just remember that these have microphones that can go hot at any moment, so they can pose a privacy risk like any connected device. The voice that announcements sound like the voice of Marina Sirtis ("Counselor Troy").
  11. "Class! Class!" (sound of ruler smacking desk) I kicked over a hornet's nest, but I did not intend for it to spin off into politics or riffs about socialism. I was and am angry and disheartened about my part of America being passed by in its hour of need. I am pretty conservative, as I suspect are most of the members of this forum. Some of you know I am a New Orleans historian. Let me make one more point and then I will rest my case about this tragedy. Pre-Katrina: New Orleans had a large population of people who lived in inherited housing with little or no insurance. Besides tourism, medical services, and crime, New Orleans had a small economy relative to its pre-K population. Post-K: A large number of people left never to return. The cachet of New Orleans-"America's most exotic city"- induced outside investors to bring big money in, and encouraged natives with money to invest in gambits they would never had tried pre-Katrina. In the Panhandle: Most people lived in houses they owned or were buying. Very little "legacy" housing. Bay county had a robust industrial base (and still does) and a port that seems to be holding its own. It also has 2 military bases, one of which was severely damaged, with no appropriation yet to fix it. My point is: If not for outside investors swooping in to get a piece of New Orleans, that city would have been reduced to a medium-sized town with a lot of rot around the edges. Bay county has no such cachet. True, the same developers who want to pave everything from Destin to Tampa with strip malls and condos are looking hungrily at the situation. but there is no lure like N'awlins can offer. The Government did not rescue New Orleans. It was outside money. With no government will at the state or federal level, Bay county and parts of Gulf Co. are just going to just rot. The "jack o' lantern effect" of a few restored houses on otherwise empty blocks that we see in parts of the "Nint Wahd" of New Orleans will become the norm here soon.
  12. Thanks for the recommendation. Will let you know what we buy.
  13. St. George island is OK from what I hear.
  14. Our G-17 will not connect via WiFi to our network. It did at one time. Our other Wifi devices work OK. TIA!
  15. I didn't need the WaPo to tell me this, but it is a good view of what's happened (and not) here: https://www.washingtonpost.com/national/survivors-of-hurricane-michael-in-the-florida-panhandle-fear-they-have-been-forgotten/2019/04/05/793ab5ce-563b-11e9-8ef3-fbd41a2ce4d5_story.html?noredirect=on&utm_term=.a4034c6bb8be Please excuse the point by point style here. I am too angry to do my usual elegant paragraph construction: 1. FEMA did not do enough for citizens 2. The local governments did not cooperate well about siting FEMA trailers. 3. At the same time FEMA trailers were needed here, FEMA was selling unused ones in Texas. 4. Working-class people can't find affordable housing here.Just like New Orleans after Katrina/Rita, rents have doubled or tripled. 5. Many of the small businesses in the strip malls found out their landlords' insurance is not going to help them, so they are history. 6. Despite some big speeches from the politicians, the Air Force is pondering whether it can afford to rebuild Tyndall AFB (in the eastern part of the county) as well as Offut in Nebraska which was damaged by recent floods. 7. Some insurance companies have not been very helpful. However, some people with claims are getting suckered in by contingency fee lawyers (who now are all "disaster experts") and suing. Then they realize that the insurance company is not going to give them any money while the case is in litigation. 8. Some wealthy (?) people near me with waterfront property now understand the costs of elevating their houses and bringing everything up to code. So, some are walking away from their homes. 9. In my very middle-class neighborhood, many houses still have blue tarps on roofs, some with serious damage have not been touched, only now (6 months and counting) are the destroyed houses getting demolished. My friends outside the area agree the news cycle has moved on and since the area does not have the unique identify of New Orleans (my adopted hometown) the media is unlikely to re-engage unless it is starved for other things to report. Pax...
  16. also depends on the media. Many record companies cut off the low end to fit tracks on LPs, and the last track is notorious for poor bass. A clean rehost on CD, even from just the original 2 track mix down, usually solves that unless the mastering person decides to monkey with the original tonal balance.
  17. Hi, We need new BT phones. We had the Klipsch noise-cancelling phones (which were not BT) and we can live without noise cancellation. We are looking for fidelity but also comfort, no tight clamping and ear cushions that don't make us sweat. Most of the time we will be stationary while wearing. Price point? Probably 300 is tops. Thanks in advance
  18. one of the best new topics on this forum in some time. In the 1970s, B&O addressed this with their Uni Phase system, that used a "filler' driver between the woofer and tweeter. I never heard these, but I venture to guess that the audible improvement was only perceptible on certain music. http://www.tonmeister.ca/wordpress/2015/10/29/bo-tech-uni-phase-loudspeakers/ Some of you know that I owned DQ-10s for many years until Hurricane Michael got them. The time aligned advantages of the design were most perceptible to me on material that had a lot of reverb, whether natural or added. The front to back "imaging" was pretty amazing. The lateral imaging was good, but not markedly better than my Corns. The DQ-10s had other design compromises that are not germane here, but they were the first consumer design to address "time alignment", if only for a narrow sweet spot.
  19. I have to replace my disc player for my study system. My trusty Oppo got whacked by Micheal and I have a mix of CDs, DVD-As (sigh) and blu-rays.
  20. Do you mean the grill panels or the cloth? The grill panels are plastic similar to Sintra, and the fabric is by Duracrest. Think Bob Crites can supply the fabric these days, if not he knows where to find it. Sintra is a rigid PVC foam with smooth skins on each side. https://sintrapvc.com available from many sources, including local sign companies. It is a pain to cut with a hand knives and I recommend a variable speed scroll saw with fine blade, low speeed to avoid melting the plastic.
  21. The outer foil connected to lowest potential is a RF practice. Makes no difference at audio frequencies.
  22. Really depends on the storage conditions. If kept in a climate controlled environment, I'd say petroleum based lubricants can last indefinitely. If they are stored in sheds or garages that get hot in the summer and freeze in the winter, the lube will probably be less than optimum after a few years. I just used some Radio Shack tuner cleaner on the battery contacts of one of our maneki-neko (waiving cat figures) and despite being at least 15 years old it was still good.
  23. I replaced the 1.5 uF and 3 uF caps with WIMA units. https://www.wima.de/en/ there are several US dealers. These are well-regarded in the guitar amp and tube community I used a Solen for the 68 uF. I did not touch the mids. There is not much you do without major cabinet surgery since the driver of the mid almost touches the inside of the back wall. but I rotated the woofers. I just replaced the caps. I did not rebuild the entire crossovers which were rather crudely put together in the first place.
  24. The CW II uses the K601/K52H mid crossed over at 600 Hz. The CW III uses the K701, crossed over at 800 Hz. The CW III woofer is higher on the baffle board to reduce "floor bounce" anomalies. When the CW III was announced, our forum went through a lot of hand-wringing about the midrange change, but I have yet to see any measurements that quantify the difference. If you can see these in person and take them home yourself it sounds like deal (Crites is big plus). If they have to be shipped, insist on using Craters & Freighters so the cabs don't get crushed (voice of experience).
  25. I hope the new L100s have real crossovers and not just two electrolytic caps. The original L100 was the epitome of the boom-shriek school. I hope these have been reengineered.
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