Cartridge impedance loading question

Don, I did not (yet) say I prefer 47K. I did say I tried it by serendipitous accident and was surprised at how good it sounded with the MC2000, with the one exception that bass was a bit flabby. When I then switched to the gospel 100R load, I don't believe it sounded as open, free, undamped, dynamic, etc. Whatever adjective you choose, I thought the 47K load made the music sound more like real live music sounds. This was essentially on one Ella Fitzgerald original Verve album, the Berlin Songbook. Obviously, I need several hours more of listening to a wider variety of LPs before I would draw any conclusions. On the other hand, I am very familiar with this album on several different systems in my home.

Most people need an SUT with the MC2000, due to its very low output. If you are using an SUT, then the choice of a net 47K load is not really there for you. Let's say the SUT has 1:10 gain; you'd need a 4.7M load resistor on the secondaries in order to make the cartridge see 47K. Thus I don't wonder that most folks are loading down the MC2000 to around 100R, which in fact ought to be just fine, in theory, based on its 3-ohm internal resistance.

Don, The phono cables are the OEM cables supplied with the Kenwood L07D and L07J tonearm. These are very low in capacitance Litz type. I re-terminated them with male XLRs, for use with the Atma MP1.

Griffithds,
If the cart gets bright (change tonal qualities) with higher value load, it probably is as Atmasphere says. Not sure what good that knowledge will do. You'll load it down anyway.

Lew,
I take it that changing loads in the MP1 isn't that easy. I was thinking, perhaps something like 10 or 20K might tighten up the bass without sacrificing that glorious sound.
This is the preamp you modified for additional gain? Output appears to be 0.05mV.

I think I remember Jcarr recommending the MC3000 which looks similar.
Regards,

The MP-1 has loading strips mounted on the rear panel by the phono input. It might be one of the easier preamps to set cartridge loading.

Atmasphere is of course correct re the ease with which the load R can be changed on the MP1. I, however, never happy unless I am messing around, have installed a 4-pole, DT switch on the rear panel, such that I can choose among 3 load resistances without having to gain access to the rear of the preamplifier to change resistors, as is needed with the OEM set-up. With my switch in neutral position, the load is the basic 47K. With the switch in either of the other two (up or down) positions, the load is 100R or 1000R, respectively. Of course, both those values are in parallel with 47K, so the actual R is slightly lower than either 100R or 1000R. Should I feel the need, it is no problem to modify this arrangement. Truthfully, I am not at all sure that the flabby extreme low bass response I hear with the 47K load is per se due to effects of that load. It could be a tonearm/cartridge resonance thing. Anyway, it's really not objectionable compared to the other benefits.