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Deang

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Everything posted by Deang

  1. This would be for those on a tight budget, or for a small second system. For $200, I think it would surprise a lot of folks. 60 wpc, 80 wpc at 4 ohms. Smart design, good parts. Two inputs and a nice attenuator. Smooth, open - but does sound better with a preamp in front of it. https://www.parts-express.com/topping-tp60-t-amp-tripath-ta2022-50wpc-(80wpc-4-ohm)-mini-amplifier--310-326
  2. Deang

    Heresy III w/ integrated amp?

    I'm using the Cambridge CXA60 with some Radian Coaxials which have the same sensitivity as the Heresy III. Trust me, unless you live in a barn, it'll get plenty loud enough. I've owned a lot of integrated amps over the years, the CXA60 makes my top three.
  3. Deang

    overdriven amplifier

    Scroll down to “amplifier power required” https://www.crownaudio.com/en-US/tools/calculators
  4. Electrical first order isn't the same as acoustical first order. http://www.audio-focus.com/THIEL2/PDF_Thiel/techpaper_general.pdf
  5. Understand some, but not all. Still pretty interesting. A slower pass tonight when I have more time.
  6. Deang

    New Deang AA's with Jupiters

    For the low pass, the only nice thing about the CFAC is that you get lower DCR compared to the same gauge in a standard wire air core. Personally, I'm fine with steel laminates in the low pass. The DCR is lower and they cost less. It's a win-win. The Werner C-core is an impressive unit. However, I'm convinced that any difference I heard (slight) was related more to the differences in marked attenuation (compared to the units we normally use around here) than any other supposed advantage of the C-core. However, I can't be 100% certain of this. Please review the following thread if you haven't seen it already. https://audiokarma.org/forums/index.php?threads/c-core-auto-transformers.516061/#post-6714319
  7. Deang

    New Deang AA's with Jupiters

    Usually just means things don’t sound as compressed - a bit more relaxed. “Black background”. Over time, what you are listening for is how well the loudspeaker gets out of the way.
  8. Deang

    KP-301 KP-3.0B Crossover

    Tap 4 is 3dB down. Yeah, I thought it was cap coil cap coil, but it’s not. Could be very much as you say. Hey, I just build this stuff. Interesting.
  9. As far as skin effect goes, yes. As for Q, Litz rules.
  10. http://www.acdcaudio.net/tubes-technical/skin-effect-in-audio
  11. It’s only 75 cycles. The only thing you’re gaining is messing up the driver, cabinet, port alignment. I would leave it alone.
  12. Deang

    AL3 and AB3 Crossovers

    Without muddying the waters too much, the AL-3 for the LaScala is roughly equivalent to the AB-2 for the Belle - and the AL-4 is roughly equivalent to the AB-3, which was the last official network designed by Klipsch for the Belle. You are not likely to find a pair for sale any time in the near future. However, the schematic is available.
  13. Deang

    New Deang AA's with Jupiters

    And I agree with Schu’s statement. All of these builds sound outstanding, but will not sound the same.
  14. Deang

    New Deang AA's with Jupiters

    Using these type of parts in the new designs is cost prohibitive because of part count. It works well for what I do because the filters are simple and only have three capacitors. I bought some for the networks supporting my Radian Coaxials. Gee, I sure hope it sounds good. 😮
  15. Deang

    New Deang AA's with Jupiters

    I’ve always recommended any film and foil over a metalized. The PPT Theta is best value in that category. A 2uF Theta is $20, which I consider very reasonable for what they are giving you. By contrast, the polystyrene RTX is $60, and the Jupiters are almost $90. I always said I would use a Mylar if I could find a true film version of it. These are also in oil and hermetically sealed. A lot of capacitor for $40 a piece.
  16. Deang

    New Deang AA's with Jupiters

    There’s only a handful of commercial companies that wind capacitors, and they simply wind to a vendor’s specs and put their label on them. Looking at the spec sheet for the 524 Series, it seems highly unlikely that it’s not the same capacitor.
  17. Deang

    New Deang AA's with Jupiters

    I’m going to guess that anything you’ve ever heard involved either the old worn cans or entry level metalized capacitors. Films sound smoother and a bit more subdued, not having that characteristic exaggerated sizzle and low level grain that many metalized capacitors have. Of course, nothing that would be noticed in a triple blind, hands tied behind your back test.
  18. Deang

    New Deang AA's with Jupiters

    The set on top came out of my personal LaScalas - that’s the only set like that I’ve ever built. The Werner autoformer and copper foil inductor on the low pass were simply to satisfy curiosity. The capacitors are MusiCaps and RTX MultiCaps (all film and foil). The set on the bottom is how I would prefer to build these in the future. Jupiter on the primary, and Arizona Blue on the tweeter. The Arizonas are Mylar film/paper in oil and hermetically sealed. The capacitor is actually the 524 Series from Electrocube. https://4donline.ihs.com/images/VipMasterIC/IC/ELCU/ELCUS00028/ELCUS00028-1.pdf
  19. Deang

    KP-301 KP-3.0B Crossover

    Didn’t even notice the .pdf. Looks like a 24dB/octave midrange. The autoformer has too much inductance to actually be doing anything (other than introducing phase shift). The series resistor behind the autoformer is attenuating and manipulating the impedance before it gets to the input tap. The resistor in parallel with the polyswitch is the tweeter protection. These are all uneducated guesses.
  20. Deang

    KP-301 KP-3.0B Crossover

    Pretty simple filter really. 12dB/12dB/18dB - more power handling and slightly better imaging at moderate power levels.
  21. People now entertaining lunacy. Seriously?
  22. That’s just the end sleeve - the wire and jacket are perfectly fine.
  23. I think the barometric pressure in the room changed.
  24. Deang

    KP-301 KP-3.0B Crossover

    It’s a stupid feature that customers want, so the company caves and adds it - because if they don’t, then it’s something the competition has that they don’t. It’s marketing, not engineering.
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