Making phono resistance plugs


Any ideas about making a pair? Looks simple. Any esoteric suggestions? Need a little over 400 ohm. Any particular brand of resistor, or plug? 
coachpoconnor

Showing 3 responses by lewm

If I sometimes forget to say that I am only expressing my opinion, then let me say it again; I am only expressing my opinion.  So, my opinion is that installing a pot to control phono load is probably not going to sound optimal, unless one uses a stepped attenuator where each step is made with a single value high quality resistor.  THAT could sound fine.  Lots of excellent phono stages do something along those lines.  I did not mean to imply that the idea is "wrong".  Sorry about that. 
lalitk, "My thought" on loading your Hana cartridge is to start with a 47K ohm load and listen for an hour or so, at the very least, using a variety of your favorite LPs.  Then, if you are not happy, gradually reduce the load resistance until you reach a value that pleases you.  But this is a process best done slowly and deliberately.  As to the idea of using a potentiometer to dial in the load "on the fly", that is not advisable, will degrade sound.  Definitely it would not be "magic".
Y-adapter trick is appealing, but keep in mind that the phono stage will "see" the source impedance of the cartridge itself in parallel with the paralleled resistance.  This is not necessarily a disaster but something to keep in mind.  Same is true of the parallel "plug" technique.
Oldhv, that reference you cited is poorly written at best and in some cases plain wrong, in my opinion. One could argue about the audibility of the load resistor itself, but it certainly is in the signal path, contrary to what is stated. Second, the article gives the impression that one can choose any load resistance by inserting a parallel plug, which of course is not true. The resistor in the parallel position will be in parallel with whatever is the fixed load resistance inside the phono stage, which is most often 47,000 ohms.Therefore, you can never achieve a load resistance higher than 47,000 ohms by using a parallel plug resistor.