atomicbob
Last Activity:
Jul 8, 2025 at 3:42 PM
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Gender:
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Location:
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Occupation:
acoustic research scientist

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atomicbob

dScope Yoda, Male, from On planet

Pyrate BWC MZR

You can lead a person to a library but you can't make them think. Jul 6, 2025 at 7:06 PM

atomicbob was last seen:
Jul 8, 2025 at 3:42 PM
    1. atomicbob
      atomicbob
      Seattle Can Meet today ... DSHA-3F was appreciated by aficionados but the Lavry DA11 - Loxjie P20 w GE5670 combo took many by surprise.
      1. Soups, Case, LetMeBeFrank and 6 others like this.
      2. View previous comments...
      3. atomicbob
        Mar 4, 2019
        Soups and famish99 like this.
      4. atomicbob
        atomicbob
        @SoupRKnowva - you missed Muziqboy's modified Convert-2. All internal power supplies replaced with combination LPS / Lion.
        Mar 4, 2019
      5. atomicbob
    2. Luckbad
      Luckbad
      Which of your current top amps do you prefer with the HD6x0? I still haven't heard the Lyr 3, but I I find the Liquid Platinum to be excellent with them.
      1. atomicbob
        atomicbob
        Mar 2, 2019
        Cryptowolf and Luckbad like this.
      2. atomicbob
        atomicbob
        I have spent many enjoyable hours listening to Liquid Platinum and HD6x0. But the magic really happens for me with the HD800-Jmods and any of the Tres Amigos.
        Mar 2, 2019
        Cryptowolf, Luckbad and SoupRKnowva like this.
      3. atomicbob
        atomicbob
        Tres Amigos:
        ECP Audio DSHA-3F
        Cavalli Liquid Platinum
        Schiit Lyr3
        Mar 3, 2019
    3. atomicbob
      atomicbob
      Monday - Tuesday dichotomy
      1. Thad E Ginathom likes this.
      2. View previous comments...
      3. Thad E Ginathom
        Thad E Ginathom
        Good!

        You were supposed to insert an "o" into "cat" so that "white" would make sense. But hey... it's the way I tell 'em ;)
        Feb 20, 2019
      4. atomicbob
        atomicbob
        It is even more convoluted: his full name is Dr. Emmett T. Brown. T for trouble and not to be confused with Doc in Back to the Future. Well sort of.
        Feb 20, 2019
        Thad E Ginathom likes this.
      5. atomicbob
        atomicbob
        Lab results for lab cat were within normal range - likely a one-off event. Life has returned to regularly scheduled chaotic program. AES meeting was a great interview of Bob Ezrin. DSHA-3F is proving to be a fantastic listen, especially nice presentation of Pink Floyd.
        Feb 21, 2019
        Thad E Ginathom likes this.
    4. atomicbob
      atomicbob
      Sometimes revisiting the past brings unexpected surprises ...
      1. View previous comments...
      2. DigMe
        DigMe
        I thought this was gonna be about getting together with a old flame and meeting the son you never knew you had.
        Feb 7, 2019
        Psalmanazar likes this.
      3. atomicbob
        atomicbob
        @zonto: it does sound like a fortune. Maybe I have a new career awaiting.
        @DigMe: if that were so the son would likely be The Checkered Demon's protege.
        Feb 8, 2019
        zonto likes this.
      4. atomicbob
        atomicbob
        @Psalmanazar - after many hours listening I have enjoyed the tonal balance. There is one small niggle - a slight mains hum which can only be heard in the acoustic lab when ambient sound levels are very low.
        Feb 8, 2019
        Zampotech, Cryptowolf and Psalmanazar like this.
    5. atomicbob
      atomicbob
      Walking away for an afternoon to spend quality time roaming the waterfront with my lovely wife ... far more important than forum banter.
      1. Soups, BillOhio, Imraan and 17 others like this.
      2. View previous comments...
      3. atomicbob
        atomicbob
        cold and misty waterfront - ducked into a bistro for hot fare but did manage 45 min walking.
        Jan 27, 2019
        Thad E Ginathom likes this.
      4. JK47
        JK47
        Clam chowder?
        Jan 27, 2019
      5. atomicbob
        atomicbob
        Clam chowder was my first choice - wife wanted breakfast - wise man knows when to compromise. Cornmeal waffle, ham and wine was good though.
        Jan 27, 2019
        Thad E Ginathom and BillOhio like this.
    6. atomicbob
      atomicbob
      Another perfectly fine day shot to hell - rebalancing data loads on multiple NAS.
      1. pavi and Cakecake like this.
      2. JustAnotherRando
        JustAnotherRando
        Straight up space constraints, or something more complex to do with balancing throughput?
        Jan 22, 2019
        atomicbob likes this.
      3. Syzygy
        Syzygy
        Oof. I always like to recommend FreeNAS-based solutions, because usually this type of stuff just isn't necessary.

        I had to shave a yak yesterday; feel your pain.
        Jan 22, 2019
        atomicbob likes this.
      4. atomicbob
        atomicbob
        Reconfigured automatic backups from several workstations reverted to a smaller NAS and proceeded to run it out of space. Large NAS setup specifically for backups was only 10% used. All fixed now but no progress on any other projects for the duration.
        Jan 23, 2019
        Cryptowolf likes this.
    7. Taverius
      Taverius
      Quick q, because I've always been bad at this maths: if I'm being kind and assuming 18 bits of significant data in a 24bit stream, how much db of digital attenuation can I apply before I encroach on those 18 bits?
      1. View previous comments...
      2. Taverius
        Taverius
        I mean, to hear the 21st bit at its intended volume peaks have to be at what 126db? More with dithering. I like my ears too much these days so the LSBs are lost no matter what.

        Maybe there's info in the 21st because peaks are very low but eh, attn. is done in fp64 anyway, so it mostly works out for those times when you do want digital attn.
        Jan 21, 2019
      3. Taverius
        Taverius
        I'll try that out one of these days, though the realities of nervosa mean I'll always turn the digital off for serious listening, no matter what I hear.
        Jan 21, 2019
      4. yotacowboy
        yotacowboy
        If you can stand some electronic music, try Pantha Du Prince/Bell Laboratory: Elements of Light for some hand struck bells and percussion, plus a bell carillon.
        Jan 21, 2019
        Taverius and atomicbob like this.
    8. atomicbob
      atomicbob
      somedays the avalanche of ignorance is overwhelming - got to stop perusing certain other forums.
      1. Syzygy, 9suns, Case and 6 others like this.
      2. Brooko
        Brooko
        The worst is reading some of the usual BS and being so disillusioned that you can't be bothered even refuting it any more. And thats how the endless myths continue re-perpetuating. Even after you supply measurements that objectively refute the claims - you still get the same old "but I trust my ears"
        Jan 18, 2019
        atomicbob, monacelli and 9suns like this.
    9. 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
    10. 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
    11. 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
    12. 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
    13. 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.
    14. atomicbob
    15. 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.
    16. 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.
    17. 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.
    18. 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.
    19. 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
    20. 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.
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  • About

    Gender:
    Male
    Location:
    On planet
    Occupation:
    acoustic research scientist
    Gear List:
    See information 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 Spring 2 / 3
    Holo Audio Cyan 2
    Schiit Bifrost2
    Matrix Audio X-Sabre Pro
    Lavry DA11

    Enjoy
    Schiit Yggdrasil A2
    Schiit Gungnir MB A2
    Soekris dac2541

    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 Studio B
    Eddie Current Zana Deux SE
    Schiit Vali 3 with GE JAN 5670w
    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-JAR
    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 seven decades.