Rega P25 Setup Question

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.

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.

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?

The whole idea with any tonearm and it's counterweight is to keep the weight as close to the pivot point as possible. With the way Rega uses their VTF dial, it adds a spring to the mix and makes you use the weight further back on the shaft, away from the pivot point. There are many people who actually take the spring out as a mod to the arm. They say it improves the sound. I have never done this, but trust the ears of several who have.

The way you initally had it would have worked, but it's kinda hard to tell how much VTF you had because you ran out of room on the VTF dial.

The aftermarket weights, like your Expressimo, not only add more mass, but drop the center of gravity below the shaft even more than the stock units. That's why it's shaped like a tear drop. These weights REALLY do work and sound better. I sure would try to find a headshell weight for your cartridge, (or change carts) to utilize the Expressimo.

You are correct in that the dial on the side of the arm is for VTF and slider is for anti skate.

You're welcome. My pleasure!

Here's a link for a 3 gram headshell weight:

http://www.lpgear.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=LG&Product_Code=STDHDSHWT&Category_Code=HEADSHELLS