input impedance load on a cartridge.


I am interested in purchasing an MC cartridge that prefers a 400ohm "load"from the pre amp. My head amp for MC cartridges provides 110ohms which is the highest recommendation for the unit (according to the manual). In theory I should be able to change the resistors to alter the load but I am worried that going beyond the recommended value would harm the pre amp/head amp.

Can I alter the resistors to accommodate the cartridge or should I be looking for a different cartridge (or a different head amp)?

I am particularly interested in the possibility of changing the load. The alternative cart/pre option is of secondary interest.


128x128oharchie
Keith Herron is a proponent of "infinite" loading of mc cartridges. Gauging by atmasphere’s excellent post above, one can conclude Herron pre’s are also stable designs. Loading of mm and mi cartridges is a different matter.
That explains why I almost always like 47K since I have a herron. If I had a chance to try an mp1 I wouldn't turn it down. 

There are the so called ''10x and 20x'' cart impedance rules.

In the user manual of my Klyne 7PX 3.5 there are recomended

loads for 26 '''well known'' carts ; the most 47 K the rest 1 K (9x).