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problems with technics sl1200mk2
 

offline nacmat on 2007-01-13 09:43 [#02031570]
Points: 31271 Status: Lurker



for some reason , probably some adjustment I didnt do
correctly , when the record gets to the end of a side (near
to the centre of the vinyl, the cartridge seems to jump from
line to line, as if it wasnt able to be clser to the
center... any idea of what is happening?


 

offline dave_g from United Kingdom on 2007-01-13 10:17 [#02031594]
Points: 3372 Status: Lurker



anti skate settings? this controls how much force is used to
pull the tonearm away from the middle. The natural tendancy
is for it to move towards the middle, so anti skate pulls it
back. Maybe this is set too high?

It might help if you said:
what cartdridge?
what weight are you using?
what anti skate?
what height?

I use Shure M44Gs at 0.75g, height 2 and anti skate 2. I
wind the weight up to 2.5 for scratching.


 

offline nacmat on 2007-01-13 10:29 [#02031597]
Points: 31271 Status: Lurker



stanton 500 al II

0.55g
height 1 (16mm)
tracking force 2
anti skate 2


 

offline Combo from Sex on 2007-01-13 10:31 [#02031600]
Points: 7540 Status: Regular



grey or black?


 

offline dave_g from United Kingdom on 2007-01-13 10:36 [#02031603]
Points: 3372 Status: Lurker | Followup to nacmat: #02031597



0.55g!!!
not enough weight. think they work over 2-5g.
if you don't use enough weight they will skip becuase there
is not enough pressure to keep the needle in the groove.
More weight gives better tracking, but wears out records
quicker.

Do you know how to set it up properly?

this might be of help.


 

offline horsefactory from 💠 (United Kingdom) on 2007-01-13 10:42 [#02031605]
Points: 14867 Status: Regular | Followup to Combo: #02031600



1200 = grey


 

offline vlari from beyond the valley of the LOLs on 2007-01-13 10:44 [#02031606]
Points: 13915 Status: Regular



listen to dave


 

offline nacmat on 2007-01-13 11:23 [#02031619]
Points: 31271 Status: Lurker | Followup to dave_g: #02031603



2-5... I have that in 2

.55g is what I thought the cartridge weighed


 

offline dave_g from United Kingdom on 2007-01-13 12:01 [#02031633]
Points: 3372 Status: Lurker | Followup to nacmat: #02031619



2g is a little on the light side for these cartridges, so
maybe just a bit more pressure is needed.

If it is not already, move the cartridge as far forward on
the headshell as possible and ensure it is straight.

Assuming you have the counter weight set correctly, I would
suggest playing around with the anti skate dial.

Also perhaps try it at 5g pressure to see if it is capable
of not skipping at all. Maybe it is a problem with the
vinyl?

Does it happen with all records?
Are you sure your weight is set correctly? When you reduce
it to 0g the tonearm should float nice and level in mid
air.
I take it you are turning the metal thing and not just the
numbers on the counter weight?



 

offline Phobiazero from the next Xltronic (Sweden) on 2007-01-13 12:05 [#02031634]
Points: 10507 Status: Webmaster | Show recordbag



you finally bought a turntable?


 

offline Combo from Sex on 2007-01-13 12:31 [#02031652]
Points: 7540 Status: Regular | Followup to horsefactory: #02031605



Oh you're right! I've got that model :D and it works finey.
Oh I've got Ortofon concorde pro as a cartridge with 2.0g
weight.


 

offline nacmat on 2007-01-13 13:00 [#02031669]
Points: 31271 Status: Lurker | Followup to Phobiazero: #02031634



yes!!!

listening to my analords finally

dave: thanks for all your advece I will let you know

the thing is:

I set the balance to 0

then I set the tracking force to 2 (2-5)

but I cannot really put it much more than that cos the
balance reaches the end of its way...

so far it works fine with all records now, except the
plaid/lfo/clark ep


 

offline dave_g from United Kingdom on 2007-01-13 13:20 [#02031679]
Points: 3372 Status: Lurker | Followup to nacmat: #02031669



I don't really understand what you just said. You need to
get the tonearm to "float" in mid air, then move only the
numbers on the counter weight to zero. i.e. it is floating
so there is no pressure downwards.

Now twist the metal weight and the numbers together to set
the pressure/tracking force/weight. Wind it up to something
like 3. If you keep turning it more the numbers go back to
zero, but this doesn't mean zero. it is actually 4!!! When
you get to 3, for every number you rotate to, increase, so
it goes:
0g(floating)
1g
2g
3g
0g (4g)
1g (5g)

etc. Don't use more than 5g ever!

Leave the height at about 1. That is on the big ring at the
base of the gimball assembly for the tonearm.

Try playing around with the anti skate to get the best
results at the problem points on those records.

Also if the needles are new, they will need a few days to
"break in" so they will skip more at first, so maybe you
just need to use more pressure for a week or so?

Enjoy the analords.


 

offline nacmat on 2007-01-13 13:49 [#02031692]
Points: 31271 Status: Lurker | Followup to dave_g: #02031679



understood everything

i will follow your words

thanks a lot

what I meant was this:

I get the tonearm to "float" in mid air, then move only the
numbers on the counter weight to zero. i.e. it is floating
so there is no pressure downwards.

Now I try to twist the metal weight and the numbers together
to set
the pressure/tracking force/weight. to something
like 3. the thing is that after I get to 2.5, I cannot turn
anymore, the movility is over for some reason the weight is
in the top of its moving possibilities... I could reach to 3
though by turning the metal weight in the other direction
(against clock)


 

offline dave_g from United Kingdom on 2007-01-13 14:18 [#02031704]
Points: 3372 Status: Lurker | Followup to nacmat: #02031692



if you mean that you wind it so far that it won't go any
further, you should have enough pressure for a stanton 500.
The instructions with the turntable should explain it as
well and has pictures which probably make more sense than my
words...

However...
If you want even more pressure, you can take the whole
weight off and put it back on the other way, so the numbers
face backwards.
You will need to find the zero point again, but you should
be able to use more pressure in this position, since you can
get the metal weight closer to the fulcrum.
The key thing to remember is the less weight, the better for
the vinyl, but it is more likely to skip.

I don't think the technics manual has this "trick" in it!



 

offline Combo from Sex on 2007-01-13 14:55 [#02031715]
Points: 7540 Status: Regular | Followup to nacmat: #02031669



Hey! Don't put too much weigh! You'll fuck your rekkids,
boy.


 

offline Drunken Mastah from OPPERKLASSESVIN!!! (Norway) on 2007-01-13 19:02 [#02031855]
Points: 35867 Status: Lurker | Show recordbag



I just want to make sure, if it's still not working
corerclty

maybe you need to put on the little extra weight thingie?


 


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