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    R.I.P. Siegfried Linkwitz

    On his Homepage:
    Siegfried Linkwitz (1935-2018).

    A warm hearted freethinker, pioneer, innovator and friend passed away. Itīs sad..... Frank Brenner

    "Celebration of Life" for Siegfried...
  2. I'm 69. Greetings! Peter

    I'm 69. Greetings!
    Peter
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    OT: Bruckner No. 5 stereo

    directed by Herbert Blomstedt with NDR Elbphilharmonie Orchester
    recorded Sonntag, 11. Juni 2017
    Published on Jun 15, 2017
    Duration 1:19:36
    Best listening with good imaging speakers.
    (It can be...
  4. pat2pdf

    https://www.pat2pdf.org/

    With the knowledge of the patent number it can be printed legally-
    ____________
    Peter

    This one?
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    Valves will produce a lot of heat which nust be...

    Valves will produce a lot of heat which nust be dissipated, Too much heat will shorten valves lifetime.

    Fans might be a solution, but the valves should not be in a direct air stream.

    What about...
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    G20/ Beethoven

    Today in the evening the guests will meet in the Elbphilharmonie.
    It will be played "Ode an die Freude".
    Here is an recording by the Elbphilharmonie on Youtube.
    It might be advantageous to switch...
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    Hamburg Elbphilharmonie "Elphi"

    In a few days, next month, Hamburg will come into the focus of the daily news.
    I would like to point to the new „Elbphilharmonie“ in Hamburg, a concert hall which opened in january this year.
    ...
  8. :confused: :confused: The Literatur added by...

    :confused: :confused:

    The Literatur added by me was was quite helpful in my projects.

    ____________
    Hoerninger
  9. Keele published an AES preprint "The vented...

    Keele published an AES preprint "The vented loudspeaker: A restatement" on his own website. It containes many tabled alignments and some math for it.
    I think this is officially enough.

    In this...
  10. Thank you for sharing, Clark. Presumably Daphne...

    Thank you for sharing, Clark.
    Presumably Daphne Oram has been far ahead of time. Maybe she should have met some psychodelic musicians instead of The Who, Mick Jagger and The Beatles.
    ____________...
  11. Thank you for sharing. ___________ Peter

    Thank you for sharing.
    ___________
    Peter
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    Barenboim / Beethoven

    DanielBarenboim - Beethoven: Sinfonien 1-9 [4 DVDs]
    with the West-Eastern Divan Orchestra

    The performance is very lively and appealing.

    Produced in DTS 5.1 and...
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    Yes these are monaural amps, they are heavy. I...

    Yes these are monaural amps,
    they are heavy.
    I presume they are based on a genuin Philips design introduced with the The EL34 in 1949 by Philips the parent company of Mullard.

    Service manual...
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    What else with two trannies and four EL34? Old...

    What else with two trannies and four EL34?
    Old dchool - I own a similar amp Philips ELEL6432 with Ua = 685V. :D
    Pictures: http://www.ebay.de/itm/251953526457?clk_rvr_id=1210363013663&rmvSB=true
    or...
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    Jbl pl 100

    additional info:
    http://www.audioheritage.org/vbulletin/showthread.php?19890-Back-in-the-50s-a-new-Hartsfield-is-built&p=203817&viewfull=1#post203817

    https://sites.google.com/site/jblpl100/ (H....
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    Tube for Hartsfield

    In those days JBL offered a powerful sophisticated tube amp for the Hartsfield.
    It was created by an external developer.
    For details I should make a search.
    This amp is unobtainable today I...
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    Or something different?

    interesting. My first association was SINGER (USA). ;)
    ____________
    Peter
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    http://www.audioheritage.org/vbulletin/attachment....

    http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=68645&stc=1&d=1449753484
    A modern variant without batteries.
    ___________
    Peter
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    Besides that the Nazis during that time tried...

    Besides that the Nazis during that time tried every way to support their ideologie it seems to have been more common to publish textbooks which were intended to be added wth pictures (not necessarily...
  20. Thread: Chuck Berry

    by Hoerninger
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    He has influenced so many. ___________ Peter

    He has influenced so many.
    ___________
    Peter
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    Of course, but thinking about horn systems, too...

    Of course, but thinking about horn systems, too little numbers of crossover points means more directivity (longish horns)

    For example
    two-way: 40 Hz - 900 Hz - 20...
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    two-way but coax. :) ____________ Peter

    two-way but coax. :)
    ____________
    Peter
  23. Thread: 476be

    by Hoerninger
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    I don't know, but i would insert it. __________...

    I don't know, but i would insert it.
    __________
    pETER
  24. Thread: 476be

    by Hoerninger
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    NO RISK, NO FUN? A compression driver, most...

    NO RISK, NO FUN?
    A compression driver, most often a costly product, I would always use with a protection capacitor -best in a charge coupled version .
    ____________
    Peter
  25. HF, thank you for your response. The second ...

    HF, thank you for your response.
    The second paper you are mentioning is o.k. the first one is
    A.G. WEBSTER. 1919, Acoustical impedance, and the theory of horns and of the phonograph, Proc. Natl....
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