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Thread: New turntables - first Technics, now Yamaha?!

  1. #1
    Join Date: Jul 2009

    Location: Hampshire, UK

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    I'm Adam.

    Default New turntables - first Technics, now Yamaha?!

    Following the SP-10R, it looks like there might possibly be another high end Japanese turntable in the offing...

    https://www.analogplanet.com/content...how-2017-day-2

    Engineers: fixing problems you didn't know you had in ways you don't understand.

  2. #2
    Join Date: Jan 2009

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    I'm Hugo.

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    Not quite an SP-10R competitor, but it's nice to see the Japanese big names lending weight to the turntable market. I like the idea of the straight arm without offset, even if it appals Michael Fremer!

  3. #3
    Join Date: Apr 2011

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    I'm Robert.

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    Wish it was dd though
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  4. #4
    Join Date: Mar 2010

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    I'm Simon.

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    Weird without offset, doesn't it need to be much longer or almost pivoting from the edge of the platter?
    Kuzma Stabi/S 12", (LP12-bastard) DC motor and optical tacho psu, Benz LP, Paradise (phonostage). MB-Pro, Brooklyn dac and psu, Bruno Putzeys balanced pre, mod86p dual mono amps, Yamaha NS1000m

  5. #5
    Join Date: Jan 2009

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    Quote Originally Posted by sq225917 View Post
    Weird without offset, doesn't it need to be much longer or almost pivoting from the edge of the platter?
    In theory, yes, but those odd little Abis straight arms apparently sound great!

  6. #6
    Join Date: Jan 2009

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    I'm openingabottleofwine.

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    In doing away with angular offset, there is only one degree of freedom to play with, and there will only one radius of the record groove where there is perfect tangential tracking. The single degree of freedom is the difference between the effective arm length (L) and the turntable centre (spigot) to arm pivot distance (D).

    For arms with two degrees of freedom they are the arm overhang (L>D) and the offset angle.

    For arms with a single degree of freedom, it is the arm underhang (L<D).



    H. G. Baerwald, ‘Analytic treatment of tracking effort and notes on optimal pick-up design’. Journal of the Society of Motion Picture Engineers. pp. 591 – 622, 1941.
    Barry

  7. #7
    Join Date: Jan 2009

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    Quote Originally Posted by Barry View Post
    In doing away with angular offset, there is only one degree of freedom to play with, and there will only one radius of the record groove where there is perfect tangential tracking. The single degree of freedom is the difference between the effective arm length (L) and the turntable centre (spigot) to arm pivot distance (D).

    For arms with two degrees of freedom they are the arm overhang (L>D) and the offset angle.

    For arms with a single degree of freedom, it is the arm underhang (L<D).
    Of course, yet arms that deliberately fly in the face of that can apparently sound great, without any need for bias compensation. I'm not saying that ignoring accepted wisdom is better, just that lateral thinking sometimes brings surprising benefits. I like to see designers daring to be different.

  8. #8
    Join Date: Jan 2009

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    The lack of bias compensation is an interesting advantage, as can be seen on the arm in question.

    Quote Originally Posted by Amonnite Acoustics
    I'm not saying that ignoring accepted wisdom is better, just that lateral thinking sometimes brings surprising benefits. I like to see designers daring to be different.
    Yes, such as the Reed 3P arm which allows azimuth adjustment 'on the fly', but in doing so causes arm motion in the vertical plane to deviate slightly from true verticality.
    Barry

  9. #9
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    Uhh belt drive
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  10. #10
    Join Date: Jul 2009

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    Also, don’t forget back in their heyday, Yamaha offered a non offset arm as an optional upgrade for the GT-2000 - the YSA-2.
    Engineers: fixing problems you didn't know you had in ways you don't understand.

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