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

atomicbob was last seen:
Jun 20, 2021 at 8:59 AM
    1. famish99
      famish99
      Do you use a VISA of some sort to control most of your bench equipment, if so which?
      1. View previous comments...
      2. atomicbob
        atomicbob
        I'm using the free versions of Benchvue which are limited to 1 hr per data logging exercise. If I'm going to spend real money I will likely go with National Instruments Lab View.
        Jan 16, 2019
      3. famish99
        famish99
        LabVIEW has quite a few other issues, ignoring license requirements (big ask), but I would still be hamstrung with long runs for the same NI-VISA limitations (we see it on fully loaded 34970 chassis).
        Jan 16, 2019
      4. atomicbob
        atomicbob
        What kind of issues are you having on long runs with Labview?
        Jan 21, 2019
    2. atomicbob
      1. Taverius
        Taverius
        Link 1 was fascinating.

        Looking into further reading, the Beck book from 1953 is now a print of demand from Cambridge U Press, and Valley can be had print-on-demand, leather-bound from India for 40 bucks with free shipping. What a brave new world we live in.
        Jan 15, 2019
        atomicbob likes this.
      2. atomicbob
        atomicbob
        Link 1 is tubes 201 whereas link 2 is valves 101. Visuals in link 2 are some of the best I've seen for introductory material. The rest of that site has some other interesting topics.
        Jan 16, 2019
      3. drgumbybrain
        drgumbybrain
        excelente!! thanks
        Jan 16, 2019
    3. atomicbob
      atomicbob
      Will refrain from posting for awhile. On a Scotch retreat ... as Van Morrison said, let it all hang out. Hombres too.
      1. View previous comments...
      2. brencho
        brencho
        I am really into this scotch retreat
        Jan 13, 2019
      3. GoodEnoughGear
        GoodEnoughGear
        Sláinte!
        Jan 14, 2019
      4. Merrick
        Merrick
        Oh, she give me moonshine whiskey
        Oh, she give me southern love
        Deep in the heart of Texas
        There beneath the stars above
        Oh, she give me southern comfort
        Oh, she give me moonshine love
        Deep in the heart of Texas
        There beneath the stars above
        Jan 14, 2019
    4. atomicbob
      atomicbob
      Touch of the crud - time for an Airborne & Bourbon cocktail now the passive atten measurements post is complete.
      1. LetMeBeFrank, murray, cskippy and 6 others like this.
      2. bixby
        bixby
        that remedy sounds a lot better than raw garlic and greens, hmmm!
        Jan 10, 2019
    5. atomicbob
      atomicbob
      96 hrs of holiday and birthday festivities concluded. Exhilarating and exhausting. Listen to Lyle Lovett Church for how wife feels.
      1. Cryptowolf, DigMe, Jinxy245 and 2 others like this.
    6. atomicbob
    7. atomicbob
      atomicbob
      Gaahhh! Glitter ... the herpes of holiday cards, ornaments, name tags, and on.
      1. View previous comments...
      2. Taverius
      3. Thad E Ginathom
        Thad E Ginathom
        I'm the antichrist personified... but I love Christmas lights!

        And... Happy 25th December to all, whatever :)
        Dec 23, 2018
      4. Thad E Ginathom
        Thad E Ginathom
        PS... I worked for a greeting-card company for 16 years. Lots and lots of robins in snow and stuff like that... but we did not do glitter!
        Dec 23, 2018
        bengo likes this.
    8. atomicbob
      atomicbob
      The ABC trio ... accordion, banjo and castanets, music guaranteed to raise the living dead.
      1. Azimuth, westermac, Jinxy245 and 4 others like this.
      2. View previous comments...
      3. Deep Funk
        Deep Funk
        Banjos are awesome. A true banjo virtuoso can be just a good a tear jerker as a violin virtuoso. Patty Smith's cover of "Smells Like Teen Spirit" has a banjo in it. It adds a dimension to the song I never heard before.
        Dec 14, 2018
      4. atomicbob
        atomicbob
        Hey, I like Bela Fleck (banjo), Steve N Seagulls (banjo + accordion) etc. but putting that trio together is just asking for trouble.
        Dec 14, 2018
        Jinxy245 likes this.
      5. Azimuth
        Azimuth
        Or get somebody dead.
        Dec 14, 2018
        atomicbob likes this.
    9. atomicbob
      atomicbob
      Once again we should all be thankful to our forum moderators dealing with clean-ups when spambots unleash attack of the killer tomatoes.
      1. DigMe
        DigMe
        Glad I missed it.
        Dec 12, 2018
        Azimuth likes this.
      2. zerodeefex
        zerodeefex
        Meh, we get more from you guys than you get from us deleting random crap and banning people.
        Dec 12, 2018
        Thad E Ginathom, Jinxy245 and Azimuth like this.
    10. atomicbob
      atomicbob
      Celebrating 34th corporate anniversary, 46yrs in my field, 51 yrs employed and still counting, though I have stopped using the slide rule.
      1. DigMe
        DigMe
        Damn, dude. I think you've set a new longevity record for Wal-Mart greeters. Congrats!!
        Dec 12, 2018
        Thad E Ginathom and atomicbob like this.
      2. atomicbob
        atomicbob
        Welcome to Wal-Mart. Now get your shit and get out!
        Dec 12, 2018
        Thad E Ginathom and DigMe like this.
    11. atomicbob
      atomicbob
      Very nice time with my wife on a planned Date Weekend.
      1. Cryptowolf, Elnrik, Lyander and 11 others like this.
      2. View previous comments...
      3. Thad E Ginathom
        Thad E Ginathom
        Are you going to see each other again?
        Dec 3, 2018
        DigMe, Mystic, atomicbob and 5 others like this.
      4. Syzygy
        Syzygy
        Oh man, a whole weekend! I'd almost kill for that!

        Anybody 'round here good with kids for a weekend?!
        Dec 3, 2018
        DigMe likes this.
      5. atomicbob
        atomicbob
        A weekend off, no responsibilities, no distractions, no family obligations, just some quiet time to actually enjoy each other's company. A nice fire, grilled meat, bottle of good red and, of course, lord of the manor, The Cat, alternating between our laps.
        Dec 3, 2018
    12. atomicbob
      atomicbob
      Keysight impedance paper, LCR meter, pulse gen, oscilloscope, audio cables, what could possibly go wrong ...
      1. ultrabike, Cryptowolf and briskly like this.
      2. atomicbob
        atomicbob
        Plenty. Two days of experiments with many failures. Analysis of data from failures + re-reading literature = Light Bulb!
        Nov 27, 2018
        ultrabike, Cryptowolf and famish99 like this.
      3. Taverius
        Taverius
        Are you doing measurements of cables? Cuz that sounds fun (to read about after you've done all the hard work)
        Nov 27, 2018
      4. atomicbob
        atomicbob
        Yes, interconnect cables from 8 vendors. Several days of valid measurements following several days of learning.
        Nov 28, 2018
        Taverius likes this.
    13. atomicbob
      atomicbob
      1. View previous comments...
      2. atomicbob
        atomicbob
        Keysight impedance paper + BK 891 LCR + several interconnect cables = ?
        Nov 22, 2018
      3. Priidik
        Priidik
        ↑ All 'free time' taken care of, haha!
        Nov 22, 2018
        atomicbob likes this.
      4. atomicbob
        atomicbob
        @Priidik - you know it, you've been there. Many experiments later and now more questions than answers.
        Nov 23, 2018
        Priidik likes this.
    14. atomicbob
    15. atomicbob
      atomicbob
      Lowering forum SNR by nitpicking trivial matters annoys me.
      1. Kolohe, Elnrik, famish99 and 7 others like this.
      2. E_Schaaf
        E_Schaaf
        nitpicking is definitely its own form of noise
        Nov 19, 2018
        Jinxy245 likes this.
      3. Vent
        Vent
        "Corrections" should certainly be sent by private message, to be sure.
        Nov 19, 2018
      4. atomicbob
        atomicbob
        Actually, I don't mind corrections if mistakes have been made. I'm more grumpy about debating trivia concerning several amps similarity / difference without any substantial enlightenment resulting in many of the posts. There are a few useful facts coming forth, but not many.
        Nov 19, 2018
        obsiCO, Wilson, Vtory and 1 other person like this.
    16. atomicbob
      atomicbob
      phases of FotM ...
      1. View previous comments...
      2. frenchbat
        frenchbat
        Shhhhh ... Don't give massdrop's secret sauce !
        Nov 15, 2018
      3. ButtUglyJeff
        ButtUglyJeff
        You forgot the part about wanting to build an LPS, but can't tell you what a multimeter is...
        Nov 16, 2018
      4. atomicbob
        atomicbob
        Excellent suggestions!!
        However the profile post is 400 chars and limit is 420.
        Maybe deserves a spot somewhere else with additions.
        Nov 16, 2018
        Elnrik likes this.
    17. atomicbob
      1. View previous comments...
      2. Elnrik
        Elnrik
        Thanks again for all your work Bob!
        Nov 14, 2018
        Lyander, zonto, Wilson and 2 others like this.
      3. GanGreinke
        GanGreinke
        Do you have a synergistic system in mind for the Liquid Platinum?
        Nov 14, 2018
      4. atomicbob
        atomicbob
        The obvious pairing would be Gungnir MB A2 + LP and HD800 / HD6x0, for my preferences. But that will have to wait a bit until after attending some corporate responsibilities.
        Nov 15, 2018
    18. atomicbob
      atomicbob
      Digging in for a very long measurement session ... at least 120 measurements planned for today.
      1. View previous comments...
      2. atomicbob
        atomicbob
        Half the allotted time consumed, only 25% of measurements acquired. Today's amp measures so well that it is necessary to edit scripts and re-scale graphs for data to be visible, ie. not off the charts.
        Nov 10, 2018
        JustAnotherRando and westermac like this.
      3. westermac
        westermac
        Nov 10, 2018
      4. atomicbob
        atomicbob
        status update: 16 hrs total over two days so far - several hundred measurements. Still a few measurements to go ... tomorrow after corporate responsibilities. I'm done for today, I hear a wine glass calling my name. Then my least favorite part. Vetting the data, organizing, write-up and post. Wish I could automate some of that.
        Nov 11, 2018
        westermac and Lyander like this.
    19. atomicbob
      atomicbob
      Everyone needs a belief system, whether it be role models, heroes, headphone gurus, etc. Me, I believe I'll have another glass of wine.
      1. Deep Funk, Griffon, jowls and 9 others like this.
      2. ultrabike
        ultrabike
        I believe in Harvey Dent.
        Nov 8, 2018
        Deep Funk, Mystic and atomicbob like this.
      3. Deep Funk
        Deep Funk
        To quote Douglas Adams, "We apologize for the inconvenience."
        Nov 9, 2018
        atomicbob likes this.
    20. bengo
      bengo
      Wondering if Liquid Platinum + Gungnir Multibit A2 could be a value / special synergy award
      1. View previous comments...
      2. Skyline
        Skyline
        Modi Multibit/Vali 2 is my pinnacle for "value", though many might say Modi 3 better fits the bill.
        Nov 8, 2018
      3. atomicbob
        atomicbob
        Gungnir MB A2 + Liquid Platinum is a pairing that will be of high interest and I intend to evaluate such in the future, when I get around to installing the A2 PCBs into my GMB. However, as @zerodeefex points out, system synergy requires all components of the system to assess properly, transducers especially.
        Nov 8, 2018
      4. atomicbob
        atomicbob
        Value has many thresholds, depending on depth of a given individual's pockets. Performance / Price ratio is a better indicator for this combination, I think.
        Nov 8, 2018
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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.