Hi. i have a audio technica atn91 cartridge for it and want to know the tracking force and the counterweight i should set?

There's no right answer to this. Normally it is set to the specifications of the cartridge. If you don't know this look up the cartridge model number on the net. However even that is a rough guide. The idea is to set it to a point when the stylus stays in the groove, but does not rumble when playing. Sadly this can only be done by trial and error. Till it sounds good and doesn't jump out of the groove.

Start at 1 gram and work your way up. Depending on the cartridge, 1.5 to 3 grams should be sufficient. Don't make it too heavy...use as light a weight as will play and track record properly. After you have set the weight, set the anti-skate knob (or counterweight) to the same force.

hi,
Do one thing adjust counterweight on the back of the arm to 1.5gm or 2gm by rotating the counterweight. It will give some more pressuer on the styles and will avoid the jerking
ok

These are the specs for your cartridge - it is of the moving magnet variety. Vector-Aligned Dual Magnet design and A-T's exclusive Paratoroidal signal generator. This unique signal-generating system is composed of a unified, laminated coil core wound with a single piece of wire. Internal mechanical and electrical connections are eliminated, minimizing magnetic losses and assuring better signal transfer. PCOCC wire

Cartridge Specifications (ATP-2)

Frequency Response 15-22,000 Hz

Channel Separation 23/17 (dB at 1 kHz/10 kHz)

Vertical Tracking Force 3.0 - 5.0 grams

Stylus Construction Bonded round shank

Output 5.3 mV at 1 kHz, 5 cm/sec

Channel Balance 1.5 dB

Stylus Shape 0.4 x 0.7 mil elliptical
Cantilever Alloy tube

If the tonearm balance and tracking force for your cartridge are adjusted correctly, ignore it.

Register and download the manual for free at vinylengine.com

http://www.vinylengine.com/library/denon/dp-7f.shtml

Eeeww, page 8 says the counterweight snaps on and the tracking force is factory set. Any self-repecting turntable should have precise manual balance and tracking adjustments. Or your counterweight is not on? Either way, I'd look seriously at getting the stylus checked for excessive wear if it's tracking too heavily. The manual says 500 hours of normal use. You'll be carving up your recordings.

Maybe post the question to the guys at Vinylengine

The first problem could be the stylus needs cleaning. Please shine some light on the stylus ( needle ) and see if it has picked up dirt from the record groove. This will prevent the stylus from tracking the song properly. Clean using a fine brush in the direction in which the stylus passes the record groove i.e from back of the pick up arm to front- NEVER SIDEWAYS.
Next check the counterweight adjustment at the back of the Pick up arm. The tracking force should be between 1.5 to 3 grams depending on the brand of the cartridge. What ever be the chosen weight the antiskating knob should also be set to the same number.
The skipping can also be because of heavy bass vibration traveling up the body of the Turntable.Good turntables have a floating suspension to prevent this. The tuntable platter will be suspended on springs.You can place it on a rubber Matt or move it away from the speakers ,esp: sub woofers.

KEEP THE ANTI SKATE AT 0 FOR NOW,then you need 2 balance the tonearm with the rear counterweight so it just hovers at around the height of the platter.now you need to zero the gauge on the rear counterweight being carefull not to turn the counterweight,then check again that the tonearm still hovers.then screw counterweight inwards untill the dial on counterweight reads between 1.5- 2 grams dependin on tracking weight of cartridge.then adjust antiskate 2 whatever u set the tracking weight to.i would also double check with a spirit level ur level surface

It doesn't screw on, it pushes on....

"With the tonearm locked in place, put the anti‐skate
dial on "0" and push the counterweight onto the rear of
the tonearm. Make sure that the numbers face to the
front of the turntable. Turn the weight until you feel it
"click" into place.

Unlock the tonearm from the rest, and move it
toward the middle, about one inch from the edge of the
platter. Hold the arm off the surface with your right
hand on the finger lift. Begin turning the counterweight
one way or the other, until the arm seems to just
"float".

As seen in the picture, the arm, when properly
floating, will not face up nor down.. it will stay
with the platter. It may take a few tries to get
correct. Lock the tonearm back on it's rest.

Holding the rear, silver, section of the counterweight
with one hand, use your other hand to turn JUST the
number ring. It doesn't matter which direction you turn
it, but you will want "0" to face up when you are done.

Using just one hand, turn the entire counterweight
(the silver part) COUNTERCLOCKWISE until the
recommended tracking force is achieved. New
cartridges will tell what the ideal number is. As a rule of
thumb, however, most "hi‐fi" cartridges track between
1 and 2 grams, while most DJ cartridges track between
3 and 5 grams.

Set the anti‐skate dial to coincide with the tracking
force... in other words, if the tracking force is 2 grams,
set the anti‐skate dial to "2". The exception is for DJ's
who scratch and back‐cue. Your anti‐skate must be left
on "0". "

No, you should not need to install extra weights. Adjust the tomearm counterweight (on the back of the tonearm).
Install new cartridge.
Set tracking force dial to zero.
Adjust counter weight so tonearm floats vertically. This is the balance point.
Dial in tracking force, 1 to 3 grams.
If you cannot achieve balance point then you may have to add weight between the cartridge and the cartridge mount

Here's a procedure for setting the tonearm...

Look up the recommended tracking force for your cartridge/stylus.

Unplug the power to the turntable and place it on a perfectly level surface.
Set the Tracking Force and AntiSkating to 0.
Using the tonearm elevation control, raise the tonearm.
Manually move the tonearm in toward the platter.
Manually rotate the platter Clockwise a few turns to disengage any cueing mechanisms.
Disengage the tonearm elevation control. The tonearm will either float or drop. This is why we have no power, just in case it hits the platter.
Adjust the counterweight until the tonearm floats exactly horizontal. Use the flat portion of the tonarm rest as a gauge.
Return the tonearm to its rest.
If you don't have a Stylus Tracking Force Gauge. Dial in the prescribed tracking force and a corresponding anti-skate reading. Play records.