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BAC "Posiloc" Counterwight System for Rega Tonearms
Image 1 of 10 ; BAC "Posiloc" Counterweight System for Rega Image 2 of 10 Image 3 of 10 ; These next images show how it looks on a Rega Image 4 of 10 Image 5 of 10 Image 6 of 10 Image 7 of 10 Image 8 of 10 Image 9 of 10 Image 10 of 10
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The Better Audio Company,

"Posiloc" Counterweight system for Rega Tonearms.

Here, at the Better Audio Company, we have developed a unique counterweight system, that we believe is the best available for the Rega tonearm, regardless of cost.

When we set about designing this system, our design criteria was to make a system that actually does what it is meant to, i.e. make your sound improve for the "better".

We believe we have achieved this with our unique system.

What makes our system unique is two-fold.

Firstly, we have what we call "controlled de-coupling", i.e. the counterweight is not fixed in a hard, rigid fashion, but with the slightest degree of decoupling. This is achieved using a PTFE sleeve in the counterweight which, after experimentation, is the correct thickness to give the required decoupling that is suitable for a wide range of cartridges, both MM and MC.

Secondly, in order to have a controllable decoupling, the stub needs to be as rigid as possible so that this decoupling is repeatable. We have achieved this with a unique way of securing the stub to the tonearm. This is done with a special collet system that work in reverse to the way you would normally expect a collet to work, i.e. when the stub is screwed into the tonearm, the stainless steel screw is nipped up, then about 1/16th of a turn is all that is needed to loc this stub so securely that it is actually impossible to remove without first loosening the screw. Note that the screw was not "torqued up", as is required by a lot of stub designs, but is just turned 1/16th. This is to pull the collet outward to grip the thread so tightly that the stub and tonearm are as though they have been welded together.

Removing it however, is as simple as loosening the screw slightly, pushing it until you feel a light click, then the stub can be removed easily.

The end result of all this, is an improvement in sound that belies it's modest cost. The most striking change is in the solidity and precision of base notes, along with a more precise placement of individual instruments across the soundstage. Treble is much more controlled with less distortion, and the whole sound is so much easier to discern.

It fits all standard Rega straight tonearms that use the pressure cast tube, such as the RB250, 202, 251, 300, 301, 303, 700,1000  (i.e. it is not suitable for the s-shaped R200 tonearm).     

This is one of the most cost effective sound improvements you can make to your Rega Tonearm.