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  1. M

    Introducing Olympus & Olympus I/O - A new perspective on modern music playback

    if you add some caps and bypasses length can be compensated for to some extent, but generally shorter IS better....but on a NAS?
  2. M

    Introducing Olympus & Olympus I/O - A new perspective on modern music playback

    a 'passive pre-amplifier', or rather a (shunt) resistor between DAC and AMP works fine. I can recommend Khozmo as one of the most neutral versions I've heard (and used with Z foil resistors). The sonic difference between digital volume control and real colume control is quite real IME, Metrum...
  3. M

    Introducing Olympus & Olympus I/O - A new perspective on modern music playback

    I'd say that taking the Koenigsegg to Munich High End over the German Autobahn would be best of both worlds...one would need a dash of tranquilizers upon arrival in order to aprreciate sound I guess..
  4. M

    Post your female vocal videos

    don't be an a%%...this thread is for systems playing vocals, feel free to start a thread on female vocals
  5. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    yeah I noticed that ad! crazy find
  6. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    A while ago we did a tweeter shootout from plusminus 7Khz upwards and the KL302 did very well. I would not say it lacks sparkle
  7. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    isn't that exactly what I wrote? Dogma, what dogma?
  8. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    That is the beauty of designing your own speaker, one can adapt and try things... The Bionor does not really have a tweeter in it's original design, 500Hz and upwards are taken care of by the top horn (or horns for the Bionor II) It IS adjustable, I agree it's not likely tuned in the horizontal...
  9. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    great question, I always think that great composers (and conductors) play with that aspect...
  10. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    Theoretically they are Kugelwellenhorns, patented for having a large phase coherent 'plug' A calculated phase coherent speaker IMHO always sounds worse than a speaker that is physically time adjusted..call me silly but that is my preference and that of many who have heard the difference so far...
  11. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    the answer to what question please?
  12. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    more so than most of what I heard at High End Munich last year... I'll go for the setup I tested in my prototype, full range and a super tweeter rather than the 500Hz higher order crossover the horn.
  13. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    the mind is indeed building a similar picture (I'd not call what I perceive ina concert hall as hologram at all), yet the way different systems do that is differing...and for me some ways work better than others, for others it'll be the other way around. I find phase/time coherence to be of...
  14. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    indeed, the decca tree is a great set up Yet we can discuss recordings until we're green around the nose, the thing is that the recording does not change when replayed with a vintage or modern speaker.
  15. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    Overall I vastly prefer simpler recordings, they do not have to be early or old! The modernistic stereo meccano construction box recording (and mastering) I usually leave alone.
  16. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    Just listen to what Decca did in the early days of Stereo https://abbeyroadinstitute.co.uk/blog/the-decca-tree-the-secrets-behind-the-legendary-recording-technique/ Or the BBC recording training manual. Leaving the recording methods/quirks out of the comparison as that stays the same for both...
  17. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    while they will be different I tend to think that some speaker systems make the difference more pronounced than others... And what is wrong with some good mono '-) I've heard GREAT mono recordings played back with two speakers that probably painted a better 'picture' than many stereo recordings.
  18. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    what issue please?
  19. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    the one mentioned in my signature, A G2 connected single tube amp; PL519, effectively making it a mesh triode. something like 2.5W, plenty at something like 105dB/W/m
  20. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    Peter , that is exactly what I was trying to refer to! In our local concert hall I have seats in row 12, just about right for great 'soundstage' but it simply does not exist. The energy fills the room, and it's almost true surround sound (without the horrible effects home theatres invented) In...
  21. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    My initial question leading to this quest was what the exact horn curve is...the patents drove me in the direction of a Kugelwellenhorn, later I found a patent for a hybrid curve....knowing the drawing is not scaled properly the question was there. My trionor prototype is torn down before...
  22. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    that I'll adapt as needed, but will stick to a large baffle and FLH design. I think they sound great and quite natural, as expected, which is also enhanced when compared to the current high end 'sound fingerprint' which IMHO is overly detailed sound stage oriented. My Bionor based 'Trionor'...
  23. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    So, after all this time the quest has come to an end, I've analyzed all the measured data and done that again....the Bionor horn is not the magical part I once thought it was ...it's a mere segment of a circle. My audio OCD would not let go but now I can, so the design for my in house system can...
  24. M

    Modern speakers vs Vintage speakers

    good old blu tack
  25. M

    David Karmeli’s Bionor/Lamm/AS-2000 Audio System

    aren't we all ;-) You can use 4 Quad 57's per channel :-)
  26. M

    Modern speakers vs Vintage speakers

    the problem as I see it is that time is against us, for my espressomachine dating back to the fifties the engineers are already long dead..not much details are left. For a speaker or speaker chassis design going back to the 1920ies? Patents are greatm yet they typically omit the finer detail and...
  27. M

    Modern speakers vs Vintage speakers

    I'd LOVE to be able to make that comparison and then (after the fact ) be informed about the differences..I just fear that not enough specifics are known about the 1920 original to make it worthwhile....I suspect the 2022 repro was made under a lot of assumptions trying to get close to the...
  28. M

    Modern speakers vs Vintage speakers

    I agree, so let me listen to those drivers...I did not intend or say that Zylon is bad, I said Kevlar is bad.
  29. M

    Modern speakers vs Vintage speakers

    Not having the drivers made of Zylon makes tha tpretty difficult...would love to, until now paper works best for me but I'm open to anything....wood was second best so far
  30. M

    Modern speakers vs Vintage speakers

    I know how speaker cones made of Kevlar sound...pretty horrible at best IMHO, especially for tweeters Stiffer does not mean it's harder than steel, hardness is measured in Rockwell... stiffness in tensile compression or young's modulus. https://en.wikipedia.org/wiki/Zylon

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