atomicbob
Last Activity:
Mar 19, 2025 at 4:38 PM
Joined:
Sep 27, 2015
Messages:
2,697
Trophy Points:
113
Positive ratings received:
22,457
Neutral ratings received:
4
Negative ratings received:
9

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Received: Given:
Like 20,196 5,945
Dislike 5 0
Respectfully Disagree 4 0
heart 359 108
Miss Information 4 0
Epic 1,725 102
Agreed, ditto, +1 177 30
Gender:
Male
Location:
On planet
Occupation:
acoustic research scientist

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atomicbob

dScope Yoda, Male, from On planet

Pyrate BWC MZR

My daughter is guest DJ tonight: https://www.ksjd.org/show/melodic-memoir Colorado USA - begins 6PM local time Mar 4, 2025

atomicbob was last seen:
Mar 19, 2025 at 4:38 PM
    1. atomicbob
      atomicbob
      1. Qildail, Ti_Leo, Jinxy245 and 12 others like this.
      2. View previous comments...
      3. atomicbob
        atomicbob
        Live the volumes were fine. The ‘AI’ generated list of songs played is a different story.
        Mar 4, 2025
      4. Case
        Case
        Fiona, Marianne, Sinead,..outstanding
        Mar 5, 2025
        atomicbob likes this.
      5. CEE TEE
        CEE TEE
        Oh, it runs in the family!!
        Mar 5, 2025
        atomicbob and Case like this.
    2. atomicbob
      atomicbob
      Spent the day measuring Thomson-CSF 6080WA in TA-66. Started listening to I Robot. Fully sucked in. Posts will wait until tomorrow.
      1. Grattle, Justin S, Slade01 and 9 others like this.
    3. atomicbob
      atomicbob
      We have an evening custom of sitting in front of a fire with cat in lap and good red at the elbow. Our cat will herd me if I am not prompt.
      1. CEE TEE, zottel, Biodegraded and 12 others like this.
      2. joch
        joch
        That's the most awesome thing I've read today.
        Feb 13, 2025
        atomicbob, Thad E Ginathom and Case like this.
      3. Case
        Case
        Well deserved, Bob, well deserved. Cheers
        Feb 14, 2025
        atomicbob and Thad E Ginathom like this.
      4. atomicbob
        atomicbob
        The Lab Cat (Thomas) is very spoiled these days. He also has considerable lap time with the spare human (my wife.)
        Feb 14, 2025
        joch likes this.
    4. atomicbob
      atomicbob
      Distortion surfaces for 5 6AS7g measure differently and may be consistent with why they sound different. Graphs to be posted in a few days.
      1. atomicbob
        atomicbob
        630+ graphs and a few recordings which I am vetting and consolidating for an output of less than 70 for posting. Writeup nearly finished. Need to go enjoy cat on lap in front of a fire with a glass (or two) of good red.
        Feb 11, 2025
    5. atomicbob
      atomicbob
      Nothing gets adrenaline flowing like the distinctive sound a cat makes just before regurgitating, especially when on carpet.
      1. View previous comments...
      2. YMO
        YMO
        You and me both. This is why I sometimes want to cook my cat.
        Feb 9, 2025
      3. SofaSamuraiX
        SofaSamuraiX
        Plus they make the best sweet and sour chicken.
        Feb 9, 2025
      4. Thad E Ginathom
        Thad E Ginathom
        And why oh why, when we put a newspaper in front of them, do they refuse it and vomit on the mat anyway!
        Feb 9, 2025
        atomicbob, SofaSamuraiX and Lyander like this.
    6. atomicbob
      atomicbob
      Rocking out listening to Alan Parsons - I Robot evaluating 6AS7g tubes in TA-66 with HD800S (unmodified) and Holo Cyan 2 for source.
      1. View previous comments...
      2. atomicbob
        atomicbob
        I listen between 75 and 85 dBSPL which is lower than many listeners. HP drivers are not moving as far which may account for my divergent opinion of HD800S and EQ. I use Sonarworks for HP correction. In my chain I drop level by 7 dB before allowing any EQ. For sub bass boost I insert +7 dB shelf at 15 Hz with Q=0.53 using EQuick.
        Feb 5, 2025
        Riotvan and rlow like this.
      3. Thad E Ginathom
        Thad E Ginathom
        I thought, for a moment, that you were going to say "between 75 and 85 RPM!"
        Feb 6, 2025
        atomicbob and Riotvan like this.
      4. Riotvan
        Riotvan
        @Thad E Ginathom It's possible but you need a power assisted chair and a much longer cable.
        Ah yeah sonarworks is not an option for me(different sources besides pc), i tried it in the past and couldn't quite replicate what they do with other eq software.
        Feb 6, 2025
        atomicbob and Thad E Ginathom like this.
    7. atomicbob
      atomicbob
      It's snowing outside, I have a head cold. Time to sit in front of a fire with treasured cat on lap, cup of tea and hibernate.
      1. zottel, Jinxy245, Slade01 and 17 others like this.
      2. View previous comments...
      3. CEE TEE
        CEE TEE
        Oh yeah, the kids and family have been passing it around and getting waves over the past 2 months. I was holding out as long as I could and then...hopefully only one long wave for me.
        Feb 3, 2025
      4. joch
        joch
        I had one flu after another since early December. I have enough prescribed meds to classify my pee as toxic discharge. Get well soon @atomicbob and all you guys. Wishing everyone good health.
        Feb 4, 2025
      5. atomicbob
        atomicbob
        Wow! Many of you have had some pretty nasty crud! My symptoms are limited to periods of nose running like Niagara Falls, sinus congestion, less than zero energy, cognitive degradation and sleeping a lot.
        Feb 4, 2025
    8. atomicbob
      atomicbob
      Working on a Distortion Surface suite comparison between xDuoo TA-66, BH Crack, and Woo WA3. There are remarkable similarities.
      1. View previous comments...
      2. atomicbob
        atomicbob
        @roshambo123 pardon my ignorance, but in this context what does WCF mean?
        Jan 29, 2025
      3. roshambo123
        roshambo123
        White Cathode Follower
        Jan 29, 2025
      4. atomicbob
        atomicbob
        While all three amps are cathode follower designs, I don't believe they qualify as WCF types. These amps have plate of driver connected to grid of output tube and both tubes have cathode connected to ground via a resistor. No driver cathode to output tube plate connection.
        Jan 29, 2025
        Sqveak likes this.
    9. atomicbob
      atomicbob
      Had a demi tasse of real coffee first time in years. Big mistake. Vibrating with Burning Down the House on continuous loop in my head ...
      1. View previous comments...
      2. Thad E Ginathom
        Thad E Ginathom
        Can't drink it at all. So sad: I love the smell, love the flavour.
        Jan 13, 2025
      3. atomicbob
        atomicbob
        @Thad E Ginathom Apparently I no longer can either. Like you I love the smell and taste, but it doesn't love me.
        Jan 13, 2025
        Thad E Ginathom likes this.
      4. yotacowboy
        yotacowboy
        I, too, cut out most caffeine at the suggestion of my cardiologist. still can't shake my morning cappuccino, but quicker extraction means less caffeine.
        Jan 13, 2025
        Pocomo and atomicbob like this.
    10. atomicbob
      atomicbob
      Breath deep the gathering gloom Watch lights fade from every room Bedsitter people look back and lament Another day's useless energy spent..
      1. Cryptowolf, jag42, yotacowboy and 8 others like this.
      2. View previous comments...
      3. atomicbob
        atomicbob
        Many projects begun, none completed sufficiently for posting.
        Often my feline companion beckons me to sit in front of the fireplace and provide a warm lap with a drink at my elbow.
        Such is life now.
        Dec 6, 2024
      4. atomicbob
        atomicbob
        Tonight offers a great example of enjoying the benefits provided by many years of wisdom gained. Several hours by the fire watching a BW movie from the 1930's with a cat snoring in my lap and enjoying a fine red beverage. Remember to take time for things that matter in your respective lives.
        Dec 6, 2024
      5. Thad E Ginathom
        Thad E Ginathom
        I was thinking it would be John Betjeman or someone like him. Turns out it's The Moody Blues! They didn't appeal to me: maybe I should give them another chance some time.
        Dec 8, 2024
        Cryptowolf and atomicbob like this.
    11. atomicbob
      atomicbob
      Will be investigating hardware of a different purpose: M4 oxygen tanks, regulator and masks to be worn while exercising.
      1. Royaume, GoodEnoughGear, Case and 6 others like this.
      2. Lyander
        Lyander
        May you have good music to keep you company during exercise. Monotonous routines are heavier on the mind than they are on the body IMO
        Nov 1, 2024
      3. atomicbob
        atomicbob
        Music is great to set a workout pace for indoor steps. Outside I prefer the sounds of nature. O2 is to combat an issue I have developed called exercise induced desaturation.
        Nov 1, 2024
      4. joch
        joch
        Good to know you’re keeping to exercising. Staying healthy by staying fit. More power to you, AB!
        Nov 1, 2024
        RestoredSparda, atomicbob and Lyander like this.
    12. atomicbob
      atomicbob
      Fiio FT1 impresses for tonal balance in a closed back at $150. 100 Hz -4dB Q=0.71 fixes the slight perceived thickness. Bargain.
    13. atomicbob
      atomicbob
      Sidetracked again having entered the age of mists, pists and ologists. More specialists added to my healthcare team.
      1. hifiandrun likes this.
      2. View previous comments...
      3. Sqveak
        Sqveak
        There should be a heart button on profile posts like these.
        I can only hope that the results are a perfect score of all clears.
        Sep 20, 2024
      4. joch
        joch
        You’re a brave man. More power to you.
        Sep 20, 2024
        atomicbob likes this.
      5. Thad E Ginathom
        Thad E Ginathom
        Bob, congratulations on surviving it all so far. Long may you continue to do so.

        Cheers!

        One of my granny's stranger proverbs: It's a creaking door that hangs the longest.
        Sep 21, 2024
        Cryptowolf and atomicbob like this.
    14. atomicbob
      atomicbob
      Volume Control Resistance Stability thread has been updated with a "vintage" P&G pot:
      1. atomicbob
    15. atomicbob
      atomicbob
      Found a vintage Penny & Giles rotary fader to add to the resistor stability evaluation along with TKD & DACT 21.
      1. Gazny
        Gazny
        Maybe one of us could volunteer a autoformer too?
        Aug 20, 2024
        roderickvd likes this.
      2. CEE TEE
        CEE TEE
        Excellent, thank you for the investigation Bob!
        Aug 20, 2024
      3. purr1n
        purr1n
        Looking forward to this
        Aug 21, 2024
    16. atomicbob
      atomicbob
      What is this, Attack of the Marketing Bots month? (Think Attack of the Killer Tomatoes.)
      1. Qildail, Jinxy245, joch and 4 others like this.
      2. Biodegraded
    17. atomicbob
      atomicbob
      Sorry to be offline for awhile. Much catching up in order. Been through enough CT scans I might begin to glow in the dark ...
      1. zottel, Qildail, Case and 9 others like this.
      2. View previous comments...
      3. Armaegis
        Armaegis
        On the plus side, if you glow then you won't need a nightlight to go to the bathroom...
        Jul 3, 2024
      4. purr1n
        purr1n
        Take care of your health. Always a seat for you here.
        Jul 3, 2024
        Pocomo, Case, atomicbob and 2 others like this.
      5. atomicbob
        atomicbob
        Thank-you all for the kind thoughts.

        There will be good days, and some not so good. Still recovering from those &!%* statins.

        It has provided me incentive to prioritize living each day as if it might be my last.
        Jul 3, 2024
        zottel, Qildail, Case and 2 others like this.
    18. atomicbob
      atomicbob
      If anyone ever receives a dislike from me it is most likely aging eyes, trembling hands, fat fingers on a mobile device.
      1. View previous comments...
      2. joch
        joch
        Been there done that! Glad there’s an undo option.
        May 31, 2024
      3. zottel
        zottel
        This has happened quite a number of times to me, too. I always immediately corrected it. At least I hope so.
        May 31, 2024
        atomicbob likes this.
      4. roshambo123
        roshambo123
        My one dislike here was an accident from a senior member. I wear it proudly
        May 31, 2024
    19. atomicbob
      atomicbob
      Augmenting auditory evaluations with palatial delights in the form of fermented red of good character.
      1. Qildail, yotacowboy, Case and 6 others like this.
      2. bixby
        bixby
        That coupled with brain wave timing especially after the witching hour can be a transformative listening experience.
        May 19, 2024
        Grattle and atomicbob like this.
    20. atomicbob
      atomicbob
      If I seem terse & unclear keep in mind I am 15 days recovering from 58 days of statins. Statins lower cholesterol at the price of ...
      1. bixby likes this.
      2. View previous comments...
      3. atomicbob
        atomicbob
        @internethandle : works for some of which you are fortunate to be one. Others can suffer miserably.
        @Erroneous : thank-you she is getting around pretty well now. We both are back to having smiles on our faces.
        May 10, 2024
      4. bixby
        bixby
        Statins are shit. My med record says I am allergic to statins (yes thanks to those side effects, stopped after 4 -6 wks and two types ), Drs no longer say hey you need to be on statins. And no $$$ for big pharma and just a slight bit above the level they set to get everyone on them.
        May 19, 2024
        atomicbob likes this.
      5. bixby
        bixby
        When you actually take a deep dive into the science, lower cholesterol from statin use has a lower all cause morbidity stat of something approximating 12 days. IIRC
        May 19, 2024
        atomicbob 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.