Recent content by ianm0

  1. I

    Calling Adjust+ experts...

    That's what I thought too. An important statistical question:. Are enough samples taken to measure the average of the random variable? I doubt it. If not, the measurement is meaningless.
  2. I

    Calling Adjust+ experts...

    I think it was AnalogMagic who made the remark that phase in crosstalks measurements is meaningless, but without elaboration. So I decided to do some further investigation by measuring crosstalks traces at different times. The outcome is summarized in the attached photo. What are your thoughts...
  3. I

    Tonearm height & SRA misconception

    Thank you for the very enlightening reply. First I am in total agreement about the complexity of how the different adjustable parameters are intertwined and can affect what many could hear. Not dissimilar to how the stock market can be affected by the web of correlated economic factors Greed...
  4. I

    The importance of VTA, SRA and Azimuth - pics

    Hi JR With your sophisticated equipment, I hope you can shed some light on: When a particular tonearm height is changed by say, 2 mm and other values, how much is the height of the rear end of the cantilever has changed for a particular cartridge? That will be an interesting academic exercise...
  5. I

    Tonearm height & SRA misconception

    Me too. The entire purpose of my post was to alert people not to religiously follow that 4mm is equivalent to 1 deg, especially when they think they have measured SRA "precisely" using a microscope. It's been repeated by many others that all adjustable parameters are inter-related and changing...
  6. I

    Tonearm height & SRA misconception

    The only point I was trying to make is only geometrical: changing tonearm height by 4 mm does not mean SRA changes by 1 deg. I totally agree that the difference we hear is due to change in VTF, azimuth, zenith, etc. But the exact explanation probably is too complex an issue for all of us to...
  7. I

    Tonearm height & SRA misconception

    To address your first point. When the tonearm height changes and the stylus remains in contact with the record surface, the cantilever must rotate somewhat when the suspension is not a RIGID point. If it were rigid, the rotation of the tonearm about its pivot will have to totally accomodate that...
  8. I

    Tonearm height & SRA misconception

    Since my post above, few friends expressed they had difficulty to understand the math involved. It is actutally quite simple, but I did not do a good job explaining it. So I decided to tidy up the write-up. Here it goes: Tonearm Height and SRA It’s been widely accepted that changing a 9”...
  9. I

    The importance of VTA, SRA and Azimuth - pics

    I did a quantitive ESTIMATE, as guideline only, on the quantitive relationship between SRA and tonearm height. Please see: https://www.whatsbestforum.com/threads/tonearm-height-sra-misconception.35324/
  10. I

    Is this Cartridge Alignment good?

    First, we need to get one fact straight. As long as there is an overhang beyond the spindle, there are TWO null points. If the spindle to pivot distance is slightly "off" from manufacturer's specification, we get just one null point using HIS protractor. However, you still have another null...
  11. I

    Tonearm height & SRA misconception

    It’s been widely accepted that changing a 9” tonearm’s height by 4 mm will approximately alter the SRA by 1 degree. This contradicts valid – to me - claims by audiophiles that they can hear the difference when the aforementioned height changes by a fraction of a mm. Bear in mind the tonearm +...
  12. I

    The importance of VTA, SRA and Azimuth - pics

    The day that AI can take over should not be too far away: we will then get perfect coils alignment, stylus mounting on cantilever, and precise attachment of the latter to the body. Audio Technica, Ortofon, .. should have the resources to go that way. Maybe already.
  13. I

    Is this Cartridge Alignment good?

    The reason why you could only get the cartridge body aligned at A and not ta B is that the pivot-spindle distance is off. The null points on your protractor are not those for the pivot-spindle distance you've got. This is straightforward trigonometry. One way to overcome this without drilling a...
  14. I

    An appeal to Adjust+ owners who also own oscilloscopes

    That's what I thought too. I did ask Dr Feikert and was not given a direct answer.
  15. I

    An appeal to Adjust+ owners who also own oscilloscopes

    One thing I never understood is the phase difference measured by Adjust+ ranges from 0-180. Why not 0-360 or -180 to +180 deg? Traces shown on an oscilloscope are definitive.

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

User Menu

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