Thread: The Audiophile Thread

  1. #2026
    Member rcarlberg's Avatar
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    Quote Originally Posted by Dave (in MA) View Post
    I did a google image search and found a little bigger copy
    Ah yes, good idea. Big-ass version of the photo can be found here. From this we can identify Miles Davis "The Original Quintet (First Recording)," Paul Horn "Profile of a Jazz Musician," Lead Belly "Memorial, Vol.3" and others if I work at it.

  2. #2027
    Parrots ripped my flesh Dave (in MA)'s Avatar
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    What's the audiophile's take on having your turntable in your fireplace?

  3. #2028
    cunning linguist 3LockBox's Avatar
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    ^ It looks like it might be one of those flip phono models

  4. #2029
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    Quote Originally Posted by Dave (in MA) View Post
    What's the audiophile's take on having your turntable in your fireplace?
    A “warm” sound typical of Analog!
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  5. #2030
    Parrots ripped my flesh Dave (in MA)'s Avatar
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    Quote Originally Posted by Dave (in MA) View Post
    Dave's audio tip:
    Always make sure to wipe your feet on the doormat before stepping on your vinyl.

    I spotted Crown of Creation
    It's the Atomic Mr. Basie, you dummy.

  6. #2031
    Member rcarlberg's Avatar
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    Quote Originally Posted by Dave (in MA) View Post
    It's the Atomic Mr. Basie, you dummy.
    Cripes, you're right.

    "Atomic Mr. Basie" = 1958
    "Crown of Creation" = 1968
    McQueen photo = 1963

  7. #2032
    Member Zeuhlmate's Avatar
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    Quote Originally Posted by rcarlberg View Post
    You'll have to explain someday how frequencies WE CAN'T HEAR(!) could make a difference in our experience of music.
    Perhaps.
    Imagine a pond. throw a stone, it makes ripples. Throw another, bigger, or different or... it makes other ripples. These ripples will cross and makes synergy or counterditto, and new ripples emerge, bigger smaller, etc..
    Imagine this takes place above your hearing ability, but creates ripples in the lower spectrum you can hear or feel.

  8. #2033
    Member rcarlberg's Avatar
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    Quote Originally Posted by Zeuhlmate View Post
    Perhaps.
    Imagine a pond. throw a stone, it makes ripples. Throw another, bigger, or different or... it makes other ripples. These ripples will cross and makes synergy or counterditto, and new ripples emerge, bigger smaller, etc..
    Imagine this takes place above your hearing ability, but creates ripples in the lower spectrum you can hear or feel.
    Many years ago, when I managed the service department of an audio company, one of my engineers designed a new preamp section for our tape player. The first run of circuit boards we had made all sounded terrible. It wasn't until we put the output on an oscilloscope that we figured out why : the main amplification stage was oscillating hypersonically, like at 30,000 or 40,000 cycles. We just needed to add a capacitor across the terminals to quelch it, and they worked fine.

  9. #2034
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    I find that I like vinyl better than digital music more and more these days. The tech that exists today for a good turntable and sound is incredible nowadays. I agree with this person when they say "You need digital music. You should want vinyl records."
    https://musicology-101.com/?p=1153

  10. #2035
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    Quote Originally Posted by snowwomn View Post
    I find that I like vinyl better than digital music more and more these days. The tech that exists today for a good turntable and sound is incredible nowadays. I agree with this person when they say "You need digital music. You should want vinyl records."
    https://musicology-101.com/?p=1153
    If most vinyl starts with a digital master which is compressed to fit in the limited dynamic range of records, how can that be better. Granted that there is a lot of shitty digital mastering.
    On the verge of indecision
    I'll always take the roundabout way

  11. #2036
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    Quote Originally Posted by rcarlberg View Post
    Many years ago, when I managed the service department of an audio company, one of my engineers designed a new preamp section for our tape player. The first run of circuit boards we had made all sounded terrible. It wasn't until we put the output on an oscilloscope that we figured out why : the main amplification stage was oscillating hypersonically, like at 30,000 or 40,000 cycles. We just needed to add a capacitor across the terminals to quelch it, and they worked fine.
    In 77, I worked as a designer and next to me was a senior consultant who wrote the ic op amp cookbook. We would not have designed something with oscillations. The most interesting design I looked at was high power MOSFETs which were new. Today these devices are incorporated in class D architectures (including receivers) that need to amplify and drive 4 ohm speakers. Hafler was a follow on to Dynaco, and they designed power MOSFET amps, sometime referred to solid state tubes.
    On the verge of indecision
    I'll always take the roundabout way

  12. #2037
    Member Zeuhlmate's Avatar
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    Quote Originally Posted by Firth View Post
    If most vinyl starts with a digital master which is compressed to fit in the limited dynamic range of records, how can that be better. Granted that there is a lot of shitty digital mastering.
    But a digital mastering might not be limited to max 20 khz like the CD is. DAT tapes were digital, but the limit was 100 khz.

  13. #2038
    Member Zeuhlmate's Avatar
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    Quote Originally Posted by rcarlberg View Post
    Many years ago, when I managed the service department of an audio company, one of my engineers designed a new preamp section for our tape player. The first run of circuit boards we had made all sounded terrible. It wasn't until we put the output on an oscilloscope that we figured out why : the main amplification stage was oscillating hypersonically, like at 30,000 or 40,000 cycles. We just needed to add a capacitor across the terminals to quelch it, and they worked fine.
    But - there you go ?
    The sounds you heard were unwanted, but...

  14. #2039
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    Quote Originally Posted by Zeuhlmate View Post
    But a digital mastering might not be limited to max 20 khz like the CD is. DAT tapes were digital, but the limit was 100 khz.
    ??

    16 bit, 32, 44.1 or 48 khz

    https://en.wikipedia.org/wiki/Digital_Audio_Tape
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  15. #2040
    Member hFx's Avatar
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    Maybe trust your ears bot not your mind...

    Paper on Illusory Sound Texture
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  16. #2041
    Quote Originally Posted by Dave (in MA) View Post
    Dave's audio tip:
    Always make sure to wipe your feet on the doormat before stepping on your vinyl.

    I spotted Crown of Creation, In A Silent Way, Sketches, At Jazz Inn, and I could swear I recognize the sleeve just past the LP lying in the foreground.
    Pretty sure that's 'The Atomic Mr Basie' not Crown... and Kind of Blue not Silent Way.

    edit- oops...missed a few posts.

  17. #2042
    Member rcarlberg's Avatar
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    Quote Originally Posted by Zeuhlmate View Post
    But - there you go ?
    The sounds you heard were unwanted, but...
    Ultrasonics affected the audible frequencies, but not in a good way. I have trouble imagining an alternative.

  18. #2043
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    I can't get over that giant bowl of cigarette packs on the coffee table in that shot of Sinatra.
    I don't like country music, but I don't mean to denigrate those who do. And for the people who like country music, denigrate means 'put down.'- Bob Newhart

  19. #2044
    Member rcarlberg's Avatar
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    Is that what they were? I was trying to figure it out.

  20. #2045
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    Quote Originally Posted by rcarlberg View Post
    Ultrasonics affected the audible frequencies, but not in a good way. I have trouble imagining an alternative.
    Strong self oscillating signals affect the linearity of the circuit, as the audible range signals are superimposed on the ultrasonic oscillation.
    My Progressive Workshop at http://soundcloud.com/hfxx

  21. #2046
    Man of repute progmatist's Avatar
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    Quote Originally Posted by Firth View Post
    If most vinyl starts with a digital master which is compressed to fit in the limited dynamic range of records, how can that be better. Granted that there is a lot of shitty digital mastering.
    Actually, the opposite is true. Music on digital media more often than not is brickwalled to death. If vinyl records were brickwalled, they'd be unplayable. It would be like running one's stylus over a saw blade.

    Apart from a Shostakovich Symphony, there are very few examples of music utilizing the full dynamic range of a CD.
    Last edited by progmatist; 08-01-2019 at 04:00 PM.
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  22. #2047
    Man of repute progmatist's Avatar
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    Quote Originally Posted by rcarlberg View Post
    Ultrasonics affected the audible frequencies, but not in a good way. I have trouble imagining an alternative.
    Ultrasonic tape biasing plays a major role in making magnetic tape recording possible.
    "Well my son, life is like a beanstalk, isn't it?"--Dalai Lama

  23. #2048
    Man of repute progmatist's Avatar
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    Quote Originally Posted by Dave (in MA) View Post
    What's the audiophile's take on having your turntable in your fireplace?
    I keep my CD recorder in the fireplace, for burning CDs.
    "Well my son, life is like a beanstalk, isn't it?"--Dalai Lama

  24. #2049
    Member rcarlberg's Avatar
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    Quote Originally Posted by progmatist View Post
    Apart from a Shostakovich Symphony, there are very few examples of music utilizing the full dynamic range of a CD.
    Which one? I might need to buy me this

    I have some Copland that pushes the DR limit. I have Flim & The BBs. I have three test CDs called "Sonic Booms" by Brad S. Miller. John Greenland's "Soft Robot" comes pretty close. But I take your question.

  25. #2050
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    Quote Originally Posted by progmatist View Post
    Ultrasonic tape biasing plays a major role in making magnetic tape recording possible.
    ...but still in the linear range of the circuits. Self oscillations usually max out.
    My Progressive Workshop at http://soundcloud.com/hfxx

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