About

This is about the things that I’ve learnt and am happy to share, discuss and to learn even more from others.

This is about the things that “float my boat”. Things that get me excited, cool things, beautiful things, things that make me pleased… and things that make me sad.

Enjoy… and feel free to let me know if you do!

Owen

DarkLantern forums – please visit our new Audio/Music/Film/etc discussion forums.

18 thoughts on “About

  1. I just discovered your excellent blog, Owen – I’ll be checking in regularly to follow along. Our audio interests are similar: single-ended triodes, full-range drivers, DIY, oh my! Keep up the good work!

    • Hi Nate – thanks for looking in. Always pleased to hear from other enthusiasts with similar (or different) interests. Feel free to comment on anything,any time! Cheers, Owen

    • Hi Justin – do you mean the Tractrix horns? I do not mass produce them, but we have made a few for other enthusiasts. Unfortunately however, I am not able to organise overseas shipping at the moment. Cheers.

  2. Hi Owen:

    I am very interested in the Terminator arm. Have you made any modifications or changes in your set up? Also, what is the source for the alignment gauge for the arm? Other than that, your blog is fun to visit.

    Steve

    • Hi Steve – I have made only a few minor mods – mostly upgrades implemented after discussion with the designer (Vic Patacchiola) – eg. arm pivot weights, arm wire dressing, counterweight fixing, updated arm wand – most of which can be found on the TransFi webpages. The paper gauge was something that I drew, printed – I can email you a PDF if needed. Let me know if I can expand in more detail about anything in particular Thanks for looking – Owen

  3. Owen – I would like to make a pair of your horns. Would it be possible to email me a pattern of your MDF that you made for your white Tractix horn mold? And the mouth recurve that you cut the sanding block to .( and how they align or fit together, where they meet or fit together like I mean) I’don’t know if it could be done via email, scale wise,( I live in very rural (far from big city) Texas, USA, so do not have access to a large enlarging copier) but it could be done full scale on plain paper scotch taped together and folded up and postal mailed.Thank you very much, email beachguy1957@yahoo.com

    • Hi Marc – happy to help, if I can.
      It would be easiest if I give you the tractrix curve in a list of horiz offsets along the horn axis in increments. You can then plot them full size on large paper or directly onto your curve template – that’s what I did.
      I’d have to give you metric millimetre dimensions however!

      I could send you letter size 1:1 scale PDFs which could be printed & joined, but scale could be less than accurate.

      Alternatively, you could use an online tractrix calculator yourself.

      Re. the mouth ‘roll’ this is personal preference & not critical once the Tractrix curve reaches 90deg to horn axis.

      Rgds, Owen

  4. Here we try to kindly inquire about the permission to post your wonderful photo “on-the-ferry.jpg”

    We found it on the web and hope you agree it’s a great image that deserves the context of our project website!
    On http://www.my-wtc.com you can find a lot of wonderful images. Most of them are accompanied by some personal notes of the authors.
    As of now we have a wonderful collection of more than 500 images from 48 countries show people in front, on top or inside the World Trade Center.

    Best greetings from Berlin, Germany

    Robert Ziegler and Stefka Ammon

    • Hi Robert & Stefka – thank you for your interest – I am very happy for you to post my image/s on your webpage, together with any text – I like your webpage concept.

      – Kindly reference my name & DarkLantern blog page.
      – Please insert the note, “This image is licensed under a Creative Commons Attribution 4.0 International License.”
      Best Wishes. Owen

  5. hi owen – sorry to pop up here – was just about to post ecofan o.t.l. pictures at audioenz but seem to be blocked – perhaps you can help, kind regards, adam (ecofan)

  6. Hi Owen, thanks for the site and your A-enz blog. I’m compiling a history of high-fidelity and I’m hoping you can tell me what David Whittaker’s background was: engineer, machinist, toolmaker or otherwise. Thank you. Brendan

    • Hi Brendan – apologies for delay in replying (work, minor illness…) – as far as I know, Dave was not formally trained in engineering work. However he did machine parts on his own lathe (incl. the TT platters). Specialist work was outsourced (eg. heat treatment, plating, tungsten-carbide parts, etc). Dave told me that he sought advice also from the University of Auckland, for the TT.

      Tell me a little more about your hifi history project. – Cheers, Owen

      • Hi Owen, thanks for your reply. I am compiling a product-based history of high-fidelity audio, from 1920 to the present. At completion, this will be an Internet-based Wiki with database, translated into major languages, and donated to the AES to be freely available online. After five years I am past the halfway point to finish the first phase of product selection, categorization, and chronology. I have been greatly helped by many during this project, especially Siegfried Linkwitz, Bruno Putzeys, Pierre Lurne, Daniel Weiss, and David Fletcher, (co-founder Sumiko, SOTA, and Pacific Microsonics). I am fortunate to live in New York where the public library reference collection includes every English-language journal I could wish for and an excellent selection of European journals with the notable exception of France’s Revue du Son. There are no Japanese journals, however as I could not read them anyway, I’ve used numerous websites, usually Japanese, with Google Translate. I am nearing the end of my initial research and trying to tie up loose ends. I am making this inclusive, not USA-centric, thus my inquiry. Thanks again. Brendan

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