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Old December 14th 12, 01:26 PM posted to uk.rec.audio
Jim Lesurf[_2_]
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Posts: 2,668
Default Record player arm bounces back at the end of each side

In article
,
D.M. Procida wrote:
RJH wrote:


Well, it won't do that without some force. Something is pushing it
back. Maybe it is not as free as you think. Alternatively, look at
Jim's suggestion that the bias is set wrongly. I don't know how it
is applied on this arm, but if you adjust it off as far as possible,
that will tell you if it is responsible.

d


Sounds like a combination of wildly out tracking weight, bias
adjustment and turntable level. Can't think how/why else that could
happen. Has the TT been moved or adjusted recently?


I had a new cartridge fitted a while ago by a local hifi shop.


On further checking, the tracking weight is too low.


In fact it can't be set higher than 1.6g (for a Goldring Elan cartridge)
because the cartridge has been mounted right at the close end of the
mount, rather than in the middle.


If the overhang is wrong the skating force may be out, and could cause
problems consistent with your report.

Do you have an alignment protractor and a test LP? FWIW I tend to recommend
the Analogue Productions "Ultimate Test LP". I did some comparisons of test
LPs a few years ago and concluded this was better made than many others. If
you don't have one, I think you can get something like a PDF on the web
somewhere of a protractor to print and stick to a card.

If they'd put it in a more sensible place there'd be a proper range of
adjustment.


I'll try it on 1.6g and see what happens, but I am not very impressed by
the way it was installed.


Again, if you alter the downforce you should try a test LP as it will show
up any mistracking or marked rise in distortion if you haven't got the
right 'trade off' for the various factors involved.

Slainte,

Jim

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