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Thread: DACs

  1. #11
    Constant Bitrate
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    usb tube dac

    i guess im getting a little off topic ..please move if needed.
    interesting logic behind the design.

    tube DAC
    http://www.scott-nixon.com/dac.htm

    review links are in the above link... its a neat idea for the usb version. seems it only takes 12V AC which a PS could be built to handle.

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  2. #12
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    you might want to check one of the stickeys 'USB DACs'

    moving this post and yours to that thread.
    Jan Bennett
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  3. #13
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    Quote Originally Posted by crabbdaddy View Post
    i guess im getting a little off topic ..please move if needed.
    interesting logic behind the design.

    tube DAC
    http://www.scott-nixon.com/dac.htm

    review links are in the above link... its a neat idea for the usb version. seems it only takes 12V AC which a PS could be built to handle.

    the stepped attenuator that i got from twisted pear is a 5-12v ac unit also. here is what brian told me about that:
    It was designed for AC input, but if you supply DC instead, the rectifier diodes will just pass it through. Good news is that it won;t matter which pin you use for +12 and GND. Both ways will work the same.
    also, if you were to use that one in an automotive environment you'd probably want to solder the tube to the board. a major factor of tube failure are tubes that aren't seated properly.
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  4. #14
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    Quote Originally Posted by scott_fx View Post
    also, if you were to use that one in an automotive environment you'd probably want to solder the tube to the board. a major factor of tube failure are tubes that aren't seated properly.
    And shock mount it somehow, anything you do how however, the tube will always have some distortion and from the second you turn it on it begins to deteriorate. Tubes sound great in a guitar amp, but they aren't exactly (at least mathematically) good at reproducing a sound accurately.


    -jeffrey

  5. #15
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    that may be true; but there are a lot of people that still love that tube amp sound. :-)
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    Phaze TD1500 ~> Seas g18rnx/p
    Zapco Ref 500.1 ~ 12" tc-9
    Behringer DCX2496 ~ Envision Electronics psu
    Transflective Xenarc

    My Car Pc Install
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  6. #16
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    Live v. warm

    two totally different sounds, completely different ways to go about getting each.

    One of the many beautiful things about this stuff that I just love!
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  7. #17
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    Well when buying tube products, watch out for the cheaper stuff which may not even use tubes or doesn't supply enough voltage for the tube to prefrom well.


    -jeffrey

  8. #18
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    Quote Originally Posted by OhSh1rt View Post
    And shock mount it somehow, anything you do how however, the tube will always have some distortion and from the second you turn it on it begins to deteriorate. Tubes sound great in a guitar amp, but they aren't exactly (at least mathematically) good at reproducing a sound accurately.


    -jeffrey
    I'm not sure where you got your facts for this one. While i was researching tube amps for my car i talked to bk butler himself (if you know tubes, you probably know butler) and he told me that tubes handle vibrations in cars just fine. According to him; tubes were used back in the 'old days' in war planes. I'm guessing if they performed in those conditions; our cars aren't going to destroy them. I've never heard or read about special mounting requirements for a tube amp, maybe there is something i'm missing?
    New System in progress:
    M10k
    Phaze TD1500 ~> Dynaudio MD130
    Phaze TD1500 ~> Seas g18rnx/p
    Zapco Ref 500.1 ~ 12" tc-9
    Behringer DCX2496 ~ Envision Electronics psu
    Transflective Xenarc

    My Car Pc Install
    My Boat Pc worklog

  9. #19
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    Quote Originally Posted by scott_fx View Post
    I'm not sure where you got your facts for this one. While i was researching tube amps for my car i talked to bk butler himself (if you know tubes, you probably know butler) and he told me that tubes handle vibrations in cars just fine. According to him; tubes were used back in the 'old days' in war planes. I'm guessing if they performed in those conditions; our cars aren't going to destroy them. I've never heard or read about special mounting requirements for a tube amp, maybe there is something i'm missing?
    Ok, well, it couldn't hurt.

    -jeffrey

  10. #20
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    here is another one i just found:
    Macrom EXT.A-DSP
    http://www.macrom.it/EN/amps/extreme/ext.adsp_82.htm
    http://www.macrom.it/download.php?fi...0EXT.A1DSP.pdf
    supposed to be similar to the zapco DSP6-SL
    New System in progress:
    M10k
    Phaze TD1500 ~> Dynaudio MD130
    Phaze TD1500 ~> Seas g18rnx/p
    Zapco Ref 500.1 ~ 12" tc-9
    Behringer DCX2496 ~ Envision Electronics psu
    Transflective Xenarc

    My Car Pc Install
    My Boat Pc worklog

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