Recent content by miglto

  1. miglto

    New Avantgarde Duo Mezzo G3

    IIRC, Mezzo G3 without iTron is about $65K (actually about the same price as my Duo Mezzo when I purchased it).
  2. miglto

    New Avantgarde Duo Mezzo G3

    I was tickled by the possibility that there was another Miguel with a Kondo Ongaku and AG Mezzo’s!!! I am one of those Miguels: http://instagram.com/ongakumeansmusic But I see this is Ultimate’s setup. Beautiful. I DEFINITELY want to know how Ongaku and iTron compare!!! Thank you.
  3. miglto

    New Avantgarde Duo Mezzo G3

    The passive version still has powered basshorns. The midrange and tweeter are passive.
  4. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    If your pivot-spindle and overhang are correct, you only need to line up to one null point and the other one will be correct, in principle. It is useful to line up to both since “lining up” is prone to error.
  5. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    Interesting separation of tracking error and zenith misalignment. I sort of blend them together because at the end of the day it is the cartridge angle and the “fix” for both (in terms of angle) is the same: rotate the cartridge to minimize distortion. But I get your point. Barring the use of...
  6. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    At the null points, the zenith error will be zero (assuming you used Wally Tools protractor to compensate for the stylus’s slight misalignment). As such, AT THE NULL POINTS (there are only two) the IMD will be the lowest possible your system can have. So it’s really a question of where you want...
  7. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    Zenith error - that is how much the stylus contact edges are not perpendicular to the groove - affects distortion. The IMD (Inter Modulation Distortion) additionally increases (approximately) as 1/r. What you really want to minimize is IMD, that is: IMD ~= Zenith Error / r The various...
  8. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    Thx. Did not realize there was a download option. I downloaded from this link, this book is amazing. Thank you!
  9. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    Really interesting. Anyone has a link to the full pdf of the book (it is at this point public domain).
  10. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    In my experience it is useful to find good alignment targets but that is only the starting point. Most cartridge’s styli are not exactly square with the cantilever and/or body, and for this reason, once you have done a good alignment you need to fine-tune zenith (and azimuth) to get the best...
  11. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    You can see the Lofgren null points (as r- and r+) in this post on this thread: https://www.whatsbestforum.com/threads/baerwald-lofgrenb-stevenson-the-math-behind-alignment-conventions.37508/post-909686
  12. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    To reiterate as succinctly as possible: The formula for zenith error requires only three quantities: effective length, overhang, and offset angle. First way to use this formula: Given these three geometrical parameters, it tells you exactly what the zenith error is everywhere and in particular...
  13. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    I have read the paper and done the equations. The very first formula in this paper is exactly the one I posted initially in this thread. Nothing here is in any contradiction to what I stated. The point here is: given null points and effective length you can determine everything else. And that...
  14. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    Found this paper (the very first formula is the same as what I got): https://www.aes.org/tmpFiles/elib/20230925/21560.pdf
  15. miglto

    Baerwald? LofgrenB? Stevenson? The math behind alignment conventions

    Indeed, but clearly getting zenith as good as possible is improving the sound. You will have other problems like wow&flutter from a non-centered whole etc, for sure. It's a matter of improving what we can to get as close as possible to the best sound we can get with the setup. Agreed. I would...
See more

About us

  • What’s Best Forum is THE forum for high end audio, product reviews, advice and sharing experiences on the best of everything else. This is THE place where audiophiles and audio companies discuss vintage, contemporary and new audio products, music servers, music streamers, computer audio, digital-to-analog converters, turntables, phono stages, cartridges, reel-to-reel tape machines, speakers, headphones and tube and solid-state amplification. Founded in 2010 What’s Best Forum invites intelligent and courteous people of all interests and backgrounds to describe and discuss the best of everything. From beginners to life-long hobbyists to industry professionals, we enjoy learning about new things and meeting new people, and participating in spirited debates.

Quick Navigation

Home Forums Contact us

User Menu

Login
Steve Williams
Site Founder | Site Owner | Administrator
Ron Resnick
Site Co-Owner | Administrator
Julian (The Fixer)
Website Build | Marketing Managersing
Top Bottom