From: Patent Tactics, George Brock-Nannestad
Hi Phillip and Graeme,
you posted:
On 26/05/2006 you wrote;
ph> Cool cartridge/headshell modification. I never would've
ph> thought of this. Now how does it work (so I can do it)?
I wouldn't recommend you do this, it raises the mass of the headshell
by some considerable degree (the switch probably weighs more than the
headshell) and this is not a good idea at all. Far better to place
the switch further down the line.
----- actually it is a good idea. It enables the reversal of polarity of
the floating (non-grounded) coil in a stereo pickup, thereby enabling
summing to vertical instead of horizontal. I have used it for 30+ years,
only, precisely because of the mass you mention, Graeme, mine is a
switch I obtained from a company that manufactures hearing aids, with no
metal, except for switch blades and contact points (gold, rather than
silver). The rest is plastic. Soldering needed precision work. I did
not have a preamplifier that permitted doing reversal at the time.
Kind regards,
George