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Re: Again this is simple.....

Are you saying you've modelled how a beam formed by an armtube, cartridge and countweight behave when excited by a 15Hz resonance or impulse imparted by a record warp?

It is indeed simple; a cartridge exerts torque on the arm tube which acts agains any other force rting to deflect (rotate) the beam from vertical.

A C/W whose mass is split equally above and below the fulcrum (i.e./e.g. a circular concrentric one on a Rega, but not if it were on an SME)) doesn't exert any such torque.

It is 'intuitively' right that the C/W should also hang and provide a similar centering torque to the cartridge.

To reiterate, the problem is the unwanted variations in VTF an underslung C/W inflicts on a beam-centred pivot/fulcrum arrangment.

A compromise is needed (or a suspended 'smart' C/W), hence the Tecnoweight and my proposed DIY variation.


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