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Philips 777 stylus force adjustment

I have a Philips 777 and forgot how to adjust the tone arm. I have to adjust the tone arm counter-weight stylus force, but am not sure what to set it for. Also the dial in back spherical/elliptical. I have an Ortifon LM15 cartridge and stylus.

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LM15 has an elliptical stylus so 1,5 - 1,8g should be sufficient, and also dial the same number on the anti skate for elliptical stylus and go for it

Posted on May 26, 2008

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I have a technic sl 1200 mk2 , my anti skate is


I gather you don't know how to adjust the tonearm. First put the stylus pressure, and antiskating to zero. Balance the tonearm for a free floating position. Ortofon cartridges will list the stylus pressure, generally 1.5 grams. Dial in the correct pressure, and set the antiskating to the same as the stylus pressure. If you require more assistance, or would like to inquire about repairing your Technics, please visit my website at audioserviceclinic.com. You may contact me there. Thank you.

Dec 09, 2014 | Audio Players & Recorders

1 Answer

All 33 records seem to be skipping. Is there a weight adjustment option for teh tone arm?


there is a counter weight on the rear of the tonearm that will add weight to the stylis (tracking force)

Apr 29, 2013 | Jensen JTA460 Turntable

1 Answer

My stylus arm exerts 4 grams weight


Four grams seems a little much. I find it hard to believe Sony relied solely on an inaccessible spring for stylus pressure adjustment. Back in the day, we used to tape a coin on top of the back end of the tone arm to adjust pressure so it may be necessary to improvise

Sep 29, 2012 | Sony PS-LX250H Turntable

1 Answer

Need to adjust stylus pressure on my akai ap-a101 turntable


Not sure exactly with this one looked at a googled picture. The counter balance weight needs to come forward toward the stylus to increase weight and move back to decrease. there looks to be a thumb screw on the right of the counter weight turn anti clockwise slightly one of three things will happen either the weight will start to move down the arm, the screw will undo the weight will come loose and can be moved forward or back on the arm or not very much at all will happen at all.
Best to mark the position of the weight first so you can return it to its original position after you over adjust and cut your own grooves in you cherished vinyl only a small adjustment is required. failing that put a small piece of blu-tack on the top of the cartridge only joking.

Feb 24, 2011 | Audio Players & Recorders

1 Answer

This is a question for my daughter who lives in Japan. She has a Crosley turntable she bought from Urban Outfitters. The stylus arm has suddenly started skating over the record, ie won't play anything. ...


I have no experience of Crosley turntables, however, stylus arm skating across the record surface on any turntable is normally due to the counter balance weight being incorrectly adjusted. In order to track across a record properly, the stylus must press down on to the record very lightly. If there is too little pressure, skating is what tends to happen. Too much pressure can cause distortion of the sound and excessive wear of the record.

At the pivoting end of the stylus arm, there should be a counter balence weight. This is normally adjustable (but not always - depends on quality and features of the particular turntable), and is used to set the pressure the stylus applies to the record surface, measured in grammes. The manual that came with it should tell you how to adjust it, but for most turntables stylus pressure is between 1 to 3 grammes.

If you dont have the manual, have a good look at the pivoting end of the stylus arm to see if soemthing is obviously wrong, or if not whether there is something with numbers on it that can be turned or slid. This is likley to be the counter weight. Try adjusting it.
Within reason, the stylus weight isnt critical so a "trial and error" approach wont do any harm.

Nov 12, 2009 | Crosley CR249TA Turntable

1 Answer

What is tracking force and arm weight for Dual 505-2 deck?


http://ortofon.de/ should give you the weight. It should also give you the range of tracking force. To get the right weight you can use a stylus balance. The electronic ones are expensive but good. The mechanical ones are not great but better than nothing. I set my turntable up with an Ortofon-branded mechanical balance for weight, and a test record for tracking force.

Apr 09, 2009 | Audio Players & Recorders

3 Answers

Difficulty balancing the tone arm on kd-1033 turntable.


A new stylus should not change the tone arm balance setting if it is the correct stylus.

Does your arm have a sliding balance weight at the rear of the arm? If so you can slide this slightly towards the cartridge to regain the correct playing weight.

I would suggest you get a repair shop to do this for you, or you could finish up damaging your records.

Jan 01, 2009 | Kenwood KD-291RC Turntable

1 Answer

Skatinig


You need to adjust the downward force by adjusting the counter weight which is on the back of the tone arm. Rotate it so it's closer to the tone arm fulcrum to increase the weight on the arm, like tightening a nut on a bolt.

Oct 04, 2008 | Numark TT1520 Turntable

1 Answer

I balanced my tonearms correctly. i think .. but the stylus jumps off the record and when i back spin (cue) the needle skates drasticly. can you walk me through the balancing proceedure and tell me how to...


Balancing the tone arm is a two step process. Set the needle weight adjustment to zero(0) and make sure that the tone arm is balanced. It should rest horizontally without touching anything. Next, set the needle weight (usually 1.5 grams). Both adjustments should be on the rear of the tone arm. That should cause the tone arm to drop toward the record and have the correct pressure for the needle. Also, check the anti-skate adjustment. If that is off, the behavior you describe will occur as well.

Dan

Jul 21, 2008 | Technics Audio Players & Recorders

1 Answer

Re:


Hi Vat,
Although I live in Canada now, I was born in the former
Czecholsovakia. While I spent a year in the Czech Republic in
2006, I was amazed how advanced their technology was, in
comparison to Canada or the US. If you want modern technology,
Prague is the place to go. Anyway ...

1) As I said before, do NOT adjust the tone-arm weight up
and down. This setting must be set to match the stylus and
the cartridge !!! The wrong setting is very bad.

To get the weight adjusted correctly, do the following.

a) Check the cartridge and stylus (needle) specifications, on
the WEB if necessary.

A typical tracking weight is between 0.9 grams to 1.5 grams,
but this very much depends on the needle geometry. To much
weight will damage the needle and the record, but

so will too little, because the needle will not stay on the
surface, skipping or mistracking on loud passages.

Note that the tracking acceleration is proportional to the
the square root of the loudness, multiplied by the frequency
squared. So if the tracking force is too low, the needle will
bounce over high frequencies and damage the record as
well as the needle's tip.

2) Once you know the correct force for your needle, adjust
the rear weight for ZERO force, such that the needle just
floats weightlessly in the air. If your turn-table has an anti-
skating adjustment, set that to zero as well.

3) At this point the tone-arm should be totally weightless,
and should neither touch the plater nor swing up/down
by itself. It should float halfway.

4) A this point, adjust the rear weight's dial (not the weight) to
read zero. Note that the dial will slide, while you hold the
weight still. You have now calibrated the tone-arm's zero
point.

5) Now, adjust the weight (with the dial) to read the desired
tracking force, for example 1.25 grams.

6) Now adjust the anti-skating dial to the same number as
the rear weight. This setting compensates for the radial
(towards the center) component of the friction vector,
caused by the needle riding on the record groove, at some
specific (average) tone-arm angle.

7) Your tone arm is now balanced, and you should not
touch it after this, accept for minor adjustments.

For brand new records, you may lighten the tone-arm
by 10%. For old records, you can make it a little heavier.
Similarly, you can adjust the anti-skating to prevent a
record from skipping, but a bad record should be played
only once (and stored on your computer).

8) For some tone-arms and cartridges, the cartridge pitch
(up/down angle) is also adjustable. This requires a special
jig or gauge, supplied by the cartridge manufacturer.

The pitch can be adjusted either by the use of screws or
wedges, and by lowering / raising the rear gimble. On my
Technics SL 1200, the gimble elevation is adjustable with
a large ring, and my SURE V15 cartridge came with a guage
for adjusting it correctly.

9) It may also be possible to adjust the cartridge's yaw and
radius, but all of these adjustments should only be done
using the correct gauges and by strictly following the
cartridge installation manual.

10) NONE of these adjustments should effect the tone-arm
cueing or return process. There should be plenty of
clearence if the cueing mechanism is working properly,
except, perhaps, for the gimble elevation, if the cartridge
is unusually tall.

11) Is the cuing mechanism (i.e. the tone-arm lifter)
mechanical or hydraulic ?

Is it the lift consistent or does the tone-arm drop down
with time?

Does the tone-arm move parallel to the plater, or does the
stylus height change with tone-arm position (yaw)

You are looking for a mechanical defect in the cuing
mechanism.

12) How much over all lift do you get between the down position
and the up position? This should be at least 8 to 15mm

If the cuing mechanism is worn out, it may not move enough.

If it starts too low, it may move enough but not raise the
needle enough to clear the record.

If the cartridge is tracking too low, you may have to
remove some wedges or spacers between the cartridge
and the head, or lift the rear gimble if it is adjustable, or
get a different tone-arm head, that matches the cartridge
profile.

Finally as silly as this sounds, make sure that the
platter is fully dropped and properly engaged. If the
plater is too high, for what ever reason, this would also
cause the needle to drag.

Also make sure that the rubber mat on the plater is the
right one and that it is not too thick.

Martin


installation manual.

Jul 02, 2008 | Audio Players & Recorders

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