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Headweights

What are they good for?:

In most cases a headweight is mounted between the cartridge and the headshell part of the tonearm in order to add weight directly over the stylus as a record is played.  The effect is to add 'effective mass' to the tonearm so that it may better accommodate certain types of cartridges, usually low output moving coil, that have very stiff suspensions (low compliance).  It is most effective in the case where a medium or low mass tonearm needs to be paired with a cartridge of low compliance. The other alternative is to simply use a tonearm that already has enough effective mass to adequately operate the suspension of a low compliance MC cartridge.

Q: are there limits to how much mass may be added?  A: yes.  It is possible to add so much weight over the stylus that the counterweight at the other end can't balance it or achieve correct vertical tracking force.

Typically it is desirable for an arm and cartridge pairing to be compatible in terms of mass/compliance to achieve a static arm/cartridge resonance in the range between 8hz and 12hz.  This can be measured with a test record to verify.  (I use test record HFN 001)

 

Denon DL-103 and -103R low output moving coil.

I have on offer one weight known to work with the above cartridge and a few different tonearms.

This headweight is configured into a 'constrained layer' build up. Carbon Fiber / Brass / Carbon Fiber. The dissimilar materials are bonded together and then machined to duplicate the outer dimension of the Denon DL-103 (and R) standard resin body.

 

Thanks for looking.

 

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