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Thread: Calling Ammonite Accoustics ....

  1. #1
    Join Date: Sep 2011

    Location: Kilmarnock, Ayrshire, Scotland

    Posts: 334
    I'm stuart.

    Default Calling Ammonite Accoustics ....

    Hi Hugo, Have you seen this VTA adjust for the Jelco 750, would be interested in your thoughts?

    http://purusaudio.pt/easyVTA.html

  2. #2
    Join Date: Jan 2009

    Location: Norwich

    Posts: 2,437
    I'm Hugo.

    Default

    An interesting idea that looks to be well-executed even if the enlarged base would probably not fit on a Techy and maybe the lowest height setting for the arm is compromised by the addition of the plate that holds the micrometer. I am asked every now and again if I would consider doing a VTAF collar for Jelco arms, but the design and manufacturing costs are (for me) prohibitive and getting bigger as each month passes; and frankly I don't think that the likely demand justifies what would, for me, be a significant investment. VTAF is a nice selling point in theory but in practice most people set it once, then leave alone; it only takes minutes to adjust the height of a Jelco tonearm with my improved collar which has a nice smooth, non-grabby action. For the VTA obsessed, the old playing cards trick offers a cheap and repeatable way of gauging arm height changes for different LPs.

    I wish this chap well, but the last people (in Canada) who made a VTAF support for Jelco arms are no longer in business.

  3. #3
    Join Date: Jan 2018

    Location: Bucks

    Posts: 97
    I'm My.

    Default

    That's a nice balanced response AA. I enquired but it doesn't look like it fits a NAS due to how the adjustment sits on the collar.

  4. #4
    Join Date: Sep 2011

    Location: Kilmarnock, Ayrshire, Scotland

    Posts: 334
    I'm stuart.

    Default

    Thanks for the response Hugo, I'm surprised they can make something like that, sell it for 90, and make a profit. It does look to be well engineered and would certainly make life much simpler when changing carts but I'm worried as to how accurately it holds the arm compared to the Ammonite collar - I don't want to be taking a backward step on azimuth just to get vta on the fly

  5. #5
    Join Date: Jan 2009

    Location: Norwich

    Posts: 2,437
    I'm Hugo.

    Default

    Another factor that might matter in the real world is the height of the micrometer, which might prevent a turntable lid from being closed. Not all decks have lids, of course.

  6. #6
    Join Date: Jan 2008

    Location: Out on the wild and windy moors Lancs / Yorks Border

    Posts: 336
    I'm Andy.

    Default

    I thought it looked good and was reasonably well thought out and presented from the limited info on the video, anyway as I have an array of different carts of various heights I thought it worth ordering, which I have now done.

    Andy
    Analogue
    301 / 3012 / 2m black
    401 / PU7 / AT33ev / Highphonics SUT
    Phono 2 + PSU X 2
    Digital
    Vortexbox, SBT / Teac Dac
    Fiio Taishan
    Cambridge CXC
    Amps
    P50sa, Glasshouse TVC or Quad 34/44
    Quad 303; 606 or Bel Canto Set 40 or NG 300B Set Monoblocks
    Speakers
    Tannoy GRF Memory.
    Q Acoustic 3020.

  7. #7
    Join Date: Oct 2016

    Location: Hampshire

    Posts: 203
    I'm Mel.

    Default

    I have this on my Techie

    http://www.audiomods.co.uk/technicsarm.html

    It fits and works well though I have to say once the novelty of fine VTA adjustment wears off you rarely use it unless you changes carts regularly.

    Mel

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