Rega P25 Setup Question

I'm pretty sure the dial on the side of the arm is for tracking force and the "slide" on the base of the arm is for anti-skate. That's the way mine is setup.

It is REALLY preferred that you don't use the spring loaded VTF dial at all. Leave it a ZERO and get a tracking force gauge to set the cartridge at the desired 2.2 grams by sliding the counterweight forward and/or back to achieve this. Your cartridge might be to light to accomplish this without using the VTF dial though. You could add an extra weight at the cartridge end.

Here is an excerpt from the manual:

Cartridge tracking force adjustment

1. Ensure that the tracking force adjustment knob is set to the zero position.

2. With the cartridge permanently fitted in the correct position adjust the main balance
weight so that the arm is “floating” with the stylus just 1mm clear of a record.
(This adjustment should be made with the anti-skating knob to zero. Note: Even
at zero there will be some small residual anti-skating force. Therefore it may also
be necessary to gently touch the arm bearing carrier to stop the arm moving outwards).

3. Rotate the tracking force adjustment knob to the required tracking force. If in
doubt it is usually advisable to use a tracking force that corresponds with the
upper limits of the cartridge manufacturer’s range.

Anti - Skating (bias) adjustment

Set the bias adjustment knob to the same number as the tracking force. Note:
This is not critical and a figure of 1-1.5g will normally be suitable for moving magnet
cartridges and 1.5-2g for most moving coil cartridges.

Okay, I'm getting confused now. My understanding was vertical tracking force was equal to weight... I thought anti-skating was a horizontal (or diagonal ?) force applied by a spring.

Section 3 in the manual mentions the "tracking force adjustment knob", then the Anti-Skating (bias) adjustment knob... and that I should set it to the same number as the "Tracking Force"... this leads me to believe there are two knobs that should be set to the same value... such as a "VTF" adjuster and a Bias, or antiskate adjuster... I see now that these are the same knob, or at least that there is only one, anti-skate knob on the turntable.

My problem I think, as far as getting even more confused, as Mofimadness points out, was that the heavy weight from expressimo is too heavy and putting it all the way forward was still not enough to balance my cartridge weight. I've put the stock rega weight on and it does in fact balance now and I have some room to move forward still... So, I'll get a scale and measure the 2.2g.

Does this sound reasonable ?

Thanks :)

Mrgoby, yes use the stock weight for now. The anti skate adjuster in NOT a knob, but a small silver "slider" that sits right under the arm on the black base. If the arm is in the arm rest, it's right underneath the arm just to the left of the cueing lift. It sildes from front to back and has markings 0, 1 ,2. Do you see it?

Okay, I'm starting to see clearly now. Thankyou Mofimadness, for I now see this anti-skating slider and all is made clear.

Just to get this straight, the knob/dial on the side of the tonearm is for VTF, though, correct ? So basically the way I had it setup wouldn't have damaged my cartridge, due to lots of anti-skate force being applied ?

Out of curiousity, why is it recommended not to use the spring loaded VTF, for better sound, or to prevent stylus damage, or both ?

I know the expressimo is supposed to cut down on gyroscopic resonance, or some such thing. Would it be worth it to add more weight to the stylus end and use the expressimo, or is there any disadvantage to doing such a thing ?

Thanks a lot for the help.