New turntables - first Technics, now Yamaha?!

[Beobloke]

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

https://www.analogplanet.com/content/tokyo-international-audio-show-2017-day-2

:eek:

[Ammonite Audio]

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!

[RobbieGong]

Wish it was dd though

[sq225917]

Weird without offset, doesn't it need to be much longer or almost pivoting from the edge of the platter?

[Ammonite Audio]

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!

[Barry]

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.

[Ammonite Audio]

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.

[Barry]

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


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.

[paulf-2007]

Uhh belt drive

[Beobloke]

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.

[Floyddroid]

Wish it was dd though

I have stopped believing in all the direct drive bollocks. Good is good in both camps and equally bad is bad. Just my opinion guys not based on scientific fact!:scratch:

[RobbieGong]

I have stopped believing in all the direct drive bollocks. Good is good in both camps and equally bad is bad. Just my opinion guys not based on scientific fact!:scratch:

Defo agree, good and bad in both.

From strictly my own perspective, there's something about the belt round the platter that puts me off. Probably stupid really but as I say that's just me :mental: