In article 496f1aff.1315218@localhost, Don Pearce (Don Pearce) wrote:
On Thu, 15 Jan 2009 11:03:42 +0000 (GMT), Jim Lesurf
wrote:
[snip]
http://jcgl.orpheusweb.co.uk/temp/arm.html
Can anyone identify the arm? And does anyone know of a user or setup
manual for it on the web?
[snip]
Can't think of the name, but I certainly recognise it.The bias control
is really crude with that little weight that leans against the rod- very
prone to friction.
Yes. Although at present that doesn't work as the support won't clamp to
the pillar as it is fractured. Can probably fix that with a bodge, though.
As for the counterweight, I think there should be an additional weight
there too. You set the numbers to zero, balance by sliding the weight
back, then set tracking force by twisting - the numbers approximate
grams.
Yes. The turntable/arm are 'at work' so I can presently only experiment
with it for short periods of time. But there is a grub screw which seems to
lock the widget with the scale to the weight. If this is loose you can
adjust where the zero is set. I tried to see if this also allows the weight
to be slid backwards some more, but no joy.
It does seem likely that there should be another weight, but no sign of it
when I caught the unit. It has been sitting. forgotten, at the back of the
department 'stores' for many years so I doubt anyone now knows where this
may have gone.
The turntable should be rescuable, but I think the arm is for the bin.
Yes. However it would be useful if I could make it work well enough to be
able to check the turntable. Otherwise I'll have to get another arm and fit
that before knowing if the effort is worthwhile.
If I knew the turntable was in excellent useable condition I might be
willing to get something like a working ancient SME and fit it. But not
worth the bother/cost if the turntable is ruined or requires extensive
work. Particularly as IIRC the 301 was notorious for rumble when used with
stereo LPs rather than mono, and radiates hum with enthusiasm. Maybe a
Sonotone LP/78 turnover mono cartridge would be appropriate here. :-)
FWIW The cartridge is totally ruined. The stylus is bent and flattened
against the underbody of the cart. Guess someone tried to use it with the
playing force wildly high (presumably due to the missing counterweight.)
I'm curious to know what arm it is. Irritating that I haven't recognised it
or been able to find info as yet. And identifying it may help with getting
a suitable replacement for a missing counterweight...
Slainte,
Jim
--
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