atomicbob
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acoustic research scientist

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atomicbob

dScope Yoda, Male, from On planet

Friend BWC MZR

Wavelight measurements posted: https://www.superbestaudiofriends.org/index.php?threads/rockna-wavelight-technical-measurements.11095/ Jun 12, 2021 at 12:22 PM

atomicbob was last seen:
Jun 15, 2021 at 8:06 AM
    1. atomicbob
    2. atomicbob
      atomicbob
      Putting a wrap on Rockna Wavelight measurement data collection.
    3. atomicbob
      atomicbob
      Working on another ABX comparison per request of @Hands
      1. Marv, CEE TEE, Cryptowolf and 6 others like this.
      2. gixxerwimp
        gixxerwimp
        Poor you, got sucked into another Hands "X-off" ... LOL
        Jun 9, 2021
        atomicbob, Jinxy245 and Cryptowolf like this.
    4. atomicbob
      atomicbob
      Reverse Midas Touch day ... I need to just stop and go back to bed.
      1. View previous comments...
      2. atomicbob
        atomicbob
        @JayC look in the Urban Dictionary for Reverse Midas Touch
        Jun 4, 2021
        JayC likes this.
      3. JayC
        JayC
        Haha I know, I was trying to make it a bit lighter by being silly. Hope that was a solitary bad day!
        Jun 5, 2021
        atomicbob and Cryptowolf like this.
      4. atomicbob
        atomicbob
        Everyone has days like that. It was my turn in the barrel. Things have improved greatly, though I am not nearly as energetic as many years ago. The system is less energetic if domains of opposite direction alternate ...
        Jun 8, 2021
        Cryptowolf likes this.
    5. atomicbob
      atomicbob
      Again a short drive-by post. By the end of May I will have finished the IP transfer and once again be semi-retired. Back to fun stuff soon.
      1. Josh83, Syzygy, abraxas666 and 20 others like this.
      2. View previous comments...
      3. atomicbob
        atomicbob
        @Koth Ganesh No wish to communicate with a con man. Nothing to gain and likely everything to lose.
        May 27, 2021
        Cryptowolf and Koth Ganesh like this.
      4. Koth Ganesh
        Koth Ganesh
        @atomicbob, it’s not Amir himself that will give you grief, it’s his minions.
        May 27, 2021
        atomicbob likes this.
      5. atomicbob
        atomicbob
        @Koth Ganesh yes, it is a losing proposition to engage any of them no matter how you approach the situation.
        May 28, 2021
    6. atomicbob
      atomicbob
      This is a drive-by post ... life has been extraordinarily crazy for the last three weeks ...
      1. View previous comments...
      2. Cryptowolf
        Cryptowolf
        If you are calling the lawyers involved elephants, I've been called far worse. :) Take care and please avoid getting stepped on.
        May 3, 2021
        atomicbob likes this.
      3. atomicbob
        atomicbob
        @Cryptowolf : Dancing elephants comprise many participants including lawyers, VPs, policy makers (often human resources) and (gasp) other technical types. The specific phrase " crushed by the process" was carefully chosen.
        May 3, 2021
        Cryptowolf and Senorx12562 like this.
      4. Cryptowolf
        Cryptowolf
        Well said, I seldom encounter such artful turns of phrase outside usage by my fellow legal colleagues.
        May 4, 2021
    7. atomicbob
      atomicbob
      Working in corporate is much like working with a bull...
      1. Deep Funk, Lyander, Jinxy245 and 3 others like this.
      2. atomicbob
        atomicbob
        Sometimes you are in front of the bull, butting heads and getting gored. Most of the time you are behind the bull wading in bullshit. Occasionally you are on top of the bull for a wild ride. But when you fall off you must be careful not to get trampled in the process.
        Apr 7, 2021
      3. Azimuth
        Azimuth
        And they like to chase after the wavy red flag for whatever reason. And you can't stop them most of the time.
        Apr 7, 2021
        atomicbob and Cryptowolf like this.
      4. Cryptowolf
        Cryptowolf
        And some people think getting gored or trampled by the bull is an indication of character, while most of us do our best to avoid the sharp or tramply things.
        Apr 7, 2021
    8. atomicbob
      atomicbob
      Loaner dac2541 measurements concluded finally. Moderna vaccination #2 tomorrow. May be out of sorts for awhile.
    9. atomicbob
      atomicbob
      Performing basic research today. Decoder: basic research is what I am doing when I don't know what I am doing.
    10. atomicbob
      atomicbob
      Running dac2541 warm-up measurement sequences. T=0, 1, 2, 4, 8, 24, 48, 72 hrs ... Thousands of measurements will be acquired.
      1. Azimuth, JayC, Walderstorn and 11 others like this.
      2. Azimuth
        Azimuth
        I would Epic this if I could.
        Mar 15, 2021
      3. atomicbob
        atomicbob
        Results so far (on my lab unit) indicate most important burn-in is the first 100 to 500 hours. After burn-in there isn't much measurable warm-up change past the first hour. I'm going to repeat with the loaner unit over the next several days. My apologies to all those after me on the list. My lab unit has more than 1700 power on hours. I'm not certain how many hours are on the loaner.
        Mar 15, 2021
    11. atomicbob
      atomicbob
      Out of the blue our health care provider called and offered C19 vaccines if we could show up in short order. On a 45 day path to 94% free.
      1. sheldaze, Jinxy245, Skyline and 22 others like this.
      2. gixxerwimp
        gixxerwimp
        Guess the Best Before date was coming up fast ...

        Glad you're getting one. My mom just got her first.
        Mar 3, 2021
        atomicbob likes this.
      3. atomicbob
        atomicbob
        @gixxerwimp : you win the cigar. I learned vials of vaccine hold many doses. Once seal is broken the 6 hour time to expiration begins. Appointment cancellations result in wasted vaccine doses. We were fill-ins at the beginning of the vial seal puncture.
        Mar 4, 2021
        gixxerwimp likes this.
    12. atomicbob
      atomicbob
      Attended an AES zoom meeting tonight with Bob Ohlsson and John Windt discussing their engineering at Motown Records and the room acoustics.
      1. Josh83, Jinxy245, Cryptowolf and 4 others like this.
    13. atomicbob
      atomicbob
      Next several days will be consumed with corporate cultural unfreezing.
      1. Azimuth, Syzygy and Koth Ganesh like this.
      2. View previous comments...
      3. atomicbob
        atomicbob
        Search for Senn Delaney for an example
        Feb 23, 2021
      4. Koth Ganesh
        Koth Ganesh
        Send me the picture of the "kumbaya" moment when you get a chance
        Feb 23, 2021
        atomicbob likes this.
      5. atomicbob
        atomicbob
        Currently listening to Hallelujah Train, Mark "Mr. B." Braun Joybox album
        Feb 23, 2021
    14. atomicbob
      atomicbob
      I promised Mrs AB a critical evaluation of Numbskull BDX with a grilled steak dinner for Valentines Day weekend. Snowing and a foot deep ...
      1. Syzygy, Cryptowolf, Jinxy245 and 5 others like this.
      2. atomicbob
        atomicbob
        I'd better get busy and shovel a path the the grill. I might even have to wear a jacket and long pants tonight.
        Feb 13, 2021
        Biodegraded likes this.
      3. Erroneous
        Erroneous
        Show her you love her with a reverse sear. Finish it with herbed butter and she'll be all aflutter.
        Feb 13, 2021
        atomicbob, Syzygy and Cryptowolf like this.
    15. Wilson
      1. Cryptowolf and atomicbob like this.
      2. atomicbob
        atomicbob
        In addition to the VF14 the AC701K was also an important tube, used in the KM54 microphone. I have a KM54 and several AC701K spare tubes. When I was active in recording this was another special sounding mic.
        Feb 12, 2021
        Cryptowolf and Wilson like this.
    16. atomicbob
      atomicbob
      Currently at grumpcon 3 thanks to inflamed rhomboid from too much time at computer workstation. 7 days of pain with 14 more likely to go.
      1. Syzygy and bixby like this.
      2. View previous comments...
      3. Biodegraded
        Biodegraded
        Have you ever thought about retiring? ;-)
        Feb 9, 2021
        atomicbob likes this.
      4. atomicbob
        atomicbob
        @Biodegraded the problem is that I found what I love doing in life. If I gave that up I might die of simple boredom. This is just another pothole in the great road of life.
        Feb 9, 2021
      5. Thad E Ginathom
        Thad E Ginathom
        Hope your rhomboid gets better soon, Bob.

        My recipe for many hours spent, daily, in front of computer, is to slouch with my feet up. "worst" possible posture. Seems to work for me, but hey, I've been wrong before.
        Feb 10, 2021
        atomicbob likes this.
    17. atomicbob
    18. atomicbob
      atomicbob
      Vetting data for Soekris dac2541; 1000s of measurements, 457 graphs, 8 pdf reports. Organizing down to 10 posts is time consuming.
      1. atomicbob
        atomicbob
        Not nearly as much fun as listening to dac2541 + SW51+ and HD800-Jmod.
        Jan 31, 2021
        obsiCO, Cryptowolf, luckybaer and 5 others like this.
      2. Gazny
        Gazny
        Thank you for all the effort, it is used by many of us.
        Jan 31, 2021
    19. atomicbob
      atomicbob
      Just on a zoom meeting with Bill Hanley and David Scheirman talking about Woodstock 99. What a SR engineer's nightmare. Way beyond sound.
    20. atomicbob
      atomicbob
      Say I have the money to buy an F1, does it necessarily follow that I am a proficient driver? After all I've been driving cars for decades.
      1. Cryptowolf, Jinxy245, m17xr2b and 2 others like this.
      2. View previous comments...
      3. gixxerwimp
        gixxerwimp
        Well, glad I closed the tab after 5 sec then ...
        Glad you're enjoying the tea!
        Jan 27, 2021
        atomicbob likes this.
      4. ChaChaRealSmooth
        ChaChaRealSmooth
        @atomicbob Ah, that makes sense now! Didn't see it that way
        Jan 27, 2021
        atomicbob likes this.
      5. atomicbob
        atomicbob
        Jan 27, 2021
        ChaChaRealSmooth likes this.
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  • About

    Gender:
    Male
    Location:
    On planet
    Occupation:
    acoustic research scientist
    Gear List:
    See about section for my opinions
    My enjoyment of particular recreational music systems is inextricably intertwined with my personal preferences. The following lists are representations of my tastes in music, components and listening levels. The section on music is only a sample of my library but should provide sufficient insight into my musical preferences. I am rigorous and exacting with component measurements. That doesn’t automatically make my opinions worth anything without context. Use the following information to decide how well your own preferences converge or diverge with mine when I make comments about equipment in the forum. DO NOT blindly assume a positive comment from me about some component or headphone will automatically translate to auditory happiness on your part. Likewise you may find yourself enjoying something that I don’t. Consider (learning) your own personal preference.

    Music
    50s, 60s & 70s jazz
    Louis Armstrong, Charles Mingus, Thelonious Monk, Sonny Rollins, Miles Davis, Duke Ellington, Cannonball Adderly, Les McCann & Eddie Harris
    Recorded by Columbia (Frank Laico, Fred Plaut), Bluenote (Rudy Van Gelder), Contemporary Records (Roy DuNann)

    More recent jazz artists
    Wynton Marsalis
    Dave Grusin
    Dave Brubeck
    Bela Fleck
    Chick Corea
    Christian McBride
    Wycliffe Gordon
    Ingrid Jensen
    Steve Treseler
    Terell Stafford
    Ronnie Earl
    Steve Gadd Band
    Charlie Haden
    Brad Mehldau

    Medeski, Martin & Wood
    Medeski, Scofield, Martin & Wood
    Ill Considered
    Snarky Puppy
    Pat Metheny

    Artfully deviant
    Steve’n’Seagulls - Thunderstruck
    Two Cellos - Thunderstruck

    A class by himself
    Santana

    60s & 70s rock
    Emerson Lake & Palmer
    Blood Sweat & Tears
    Pink Floyd
    Jethro Tull
    JJ Cale
    Little Feat
    Dave Matthews Band
    Chicago
    Queen
    Cat Steven – Tea for the Tillerman
    Grateful Dead
    Lead Zeppelin

    Tangerine Dream
    Bruce Becvar
    Gary Stroutsos

    Classical composers
    Mozart
    Bach
    Beethoven
    Respighi
    Vivaldi

    Special
    Canadian Brass

    Listening Levels dBSPL
    60~70 quiet, background listening
    70~80 recreational and critical listening
    80~90 rocking out, often with libations at hand
    90~100 Santana Black Magic Woman / Gypsy Queen, ELP Tank - drum solo

    I tend to listen at quieter levels where electroacoustic transducers exhibit greater linearity. Higher levels are more likely to have greater distortion and require higher power amplification. The result is substantial deviation in opinions by listeners attempting to compare headphones when they are listening at different levels.

    DACs
    Treasured
    Holo Audio KTE Spring2
    Schiit Bifrost2
    Matrix Audio X-Sabre Pro
    Lavry DA11

    Enjoy
    Schiit Yggdrasil A2
    Schiit Gungnir MB A2
    Soekris 1421

    Work (recording, editing, acoustic measurements)
    Lavry DA11, AD11
    RME ADI-2 Pro

    Rather not listen
    Auralec Vega
    Resonessence Labs Concero
    Topping D30
    Objective DAC

    Universal Turd
    Audio-gd S19

    Amps
    Treasured
    Eddie Current Zana Deux SE
    ECP Audio DSHA-3F
    ECP Audio T4
    Shortest Way 51+
    Cavalli Liquid Crimson

    Enjoy
    Cavalli Liquid Platinum
    Schiit Lyr3 with PSVane 6SN7
    EC ZDT Jr after hum reduction modifications
    BottleHead Crack (PS modified, no speedball, e80cc driver)
    Cavalli MCTH
    Schiit Magni3+
    Schiit Vali2 with 6CG7
    Project Sunrise with 12BH7 and Linear Power Supply

    Rather not listen
    Objective 2
    Topping anything

    Headphones

    Treasured
    Sennheiser HD800-Jmod
    Focal Stellia
    Sennheiser HD600

    Enjoy
    Sennheiser HD650
    Focal Clear
    HiFiMan HE-500

    Rather not listen
    Most anything planar except for the HE-500

    System
    I developed a VST chain dubbed Immersion Virtualization System which I employ for my recreational listening. This has a substantial influence on my perception of component performance. See the IVS descriptions in the following links:

    https://www.superbestaudiofriends.o...-synergy-special-sound.54/page-14#post-129407

    https://www.superbestaudiofriends.o...-synergy-special-sound.54/page-29#post-221217

    Signature

    Organizing chaos for nearly seven decades.