effective mass of Jelco tonearms


Can anyone help with the effective mass of Jelco tonearms with detachable headshells [I believe SA 250 or 750}?I've found conflicting values, including 18.5 gms, and other values. Is this without or with headshells, and if with headshells, what is the weight of the headsshell?
boofer

Showing 1 response by fleib

The SA-750 is said to have an eff mass of 20g. It's considered a good match with the DL103(d) or other low compliance carts.

I don't have one of these arms. The info was reported in VE a number of years ago by the UK importer. Because the 750 has fluid damping of the pivots, it's said to be compatible with a wide range of medium compliance carts. The S shaped 250 has no fluid damping, but looks similar in construction and the geometry is the same.
Regards,