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Linn Forums / Linn Music Systems & Hi-fi Separates / Turntables & Record Players: Linn Sondek LP12 v / Skidding Ekos Lift/lower device.

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Skidding Ekos Lift/lower device.
2017-10-02, 18:33
Post: #11
RE: Skidding Ekos Lift/lower device.
(2017-10-02 17:23)bettermusic Wrote:  If it lowers fine on the inner tracks it could be that you are dropping it too close to the outer edge where the LP isn't yet flat and the needle is just sliding down the slope till it catches the grooves.

I'm an experienced turntable user, various models since the early seventies, never had this problem before, but my eyesight isn't as sharp as it used to be, so I'll put my glasses on and see if I am mis cueing the run in.

I will check the platform to see if it is bent perhaps causing the arm to slide minutely along it inwards to the record, if so is it possible to gently bend it back, removed from the piston first of course.

I'm also considering whether its due to the fact that the Dynavector design has a very short cantilever, almost no cantilever at all in fact and little damping, therefore low compliance, thus when the stylus lands on the outer run in, energy from the downward travel of the arm is not absorbed causing it to skid as described, a higher compliance cantilever like most other carts would act like a shock absorber absorbing the energy and thus a softer landing?
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2017-10-02, 18:57
Post: #12
RE: Skidding Ekos Lift/lower device.
It could also be that the rubber pad has smoothed with use and the arm is slipping too easily at that point. If you have any green stylus cleaning paper, try roughing it up with a little strip of that.

'troll
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2017-10-02, 21:34
Post: #13
RE: Skidding Ekos Lift/lower device.
I'm also considering whether its due to the fact that the Dynavector design has a very short cantilever, almost no cantilever at all in fact and little damping, therefore low compliance, thus when the stylus lands on the outer run in, energy from the downward travel of the arm is not absorbed causing it to skid as described, a higher compliance cantilever like most other carts would act like a shock absorber absorbing the energy and thus a softer landing?
[/quote]

That sounds plausible too. Let us know what you figure out.

Gary

LP12/Cirkus/Radikal/Kore/Ekos1/Tkable balanced/Uphorik/Krystal/ADSM/1/aktiv Akubariks
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2017-10-03, 08:01 (This post was last modified: 2017-10-03 08:19 by smokestack.)
Post: #14
RE: Skidding Ekos Lift/lower device.
(2017-10-02 17:23)bettermusic Wrote:  If it lowers fine on the inner tracks it could be that you are dropping it too close to the outer edge where the LP isn't yet flat and the needle is just sliding down the slope till it catches the grooves.

It's a combination of this, an overly smooth rubber surface on the lift lower platform as Moomintroll mentioned ...and sometimes an overly slow descent of the lift lower.

The stylus can touch the record but not yet be low enough to drop into the groove when it starts to slide down the lip of the record.
A slow descent of the lift lower , common if cold or a bit sticky with lack of frequent use, exacerbates the issue.

The typically low bias adjustment with the Ekos & early SE is probably also a contributing factor ...and it's always well worth investigating this factor as the improvements in sound quality when you get the bias right are often not subtle ! Wink
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2017-10-03, 13:38
Post: #15
RE: Skidding Ekos Lift/lower device.
I've has the skidding problem with my early-model Ekos SE since day 1, first with an Akiva and then with my Kandid. Increasing anti-skate force from 1.75g to 2+g and using the cueing lever to lower the arm VERY slowly help somewhat.

I don't think uneven record surface is the cause, because I never had the problem with other TTs and arms. I've learned to live with it, but I wish I didn't have to.

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2017-10-03, 19:00
Post: #16
RE: Skidding Ekos Lift/lower device.
(2017-10-03 13:38)Chaucer Wrote:  . I've learned to live with it, but I wish I didn't have to.

Me too, I've already had one Dynavector damaged by what I suspect was down to this issueSad
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