Cartridge incompatibility, Soundsmith and Luxman

Dear @audiojan  :   I already told you that before ant thing else you can contact directly to Luxman to have a better know about that 100 ohms resistor and if  it can changed by a technician . 

You don't have to distress at all before doing that and after Luxman answer you can now what to do.

Normally the change of that resistor could be simple for a good technician, don't have to do it by your self.

You like the SS quality level performance, well at least make the intent by email to Luxman for know if you can follow enjoying the cartridge in the future or not.

Sorry @lewm  but you made a very high bad " noise " here with the SUT when the unit has no SUT . You gave an explanation of MC cartridge and SUT impedance and the like with out any necessity to do it. Sorry but no sense of what you posted down there about. Even in the same post you said the need of a good technician to change the resistor. Makes sense to you? because  the OP does not needs that kind of mix-up/confusion for something that's simple to solve even that till today the OP just does not email Luxman , obviously is up to him. Never mind.

R.

I have no idea what you’re talking about. I never advocated a SUT to solve this particular problem. I really think you ought to reread whatever previous post of mine has got you confused, and maybe then you will understand better what I was trying to say. Anyway, I think you would agree that a clear pathway to a solution has been agreed-upon by just about everyone who has commented in the past 48 hours. So there really is no need to bring up whatever it is you don’t like about me or my previous comment.

If you cannot find a technician to switch out the built in loading resistor (assuming this IS the issue), and you are against using an external SUT feeding the MM input, you will be in the still troublesome spot of finding a cartridge that works.  Do you have a dealer that is willing to allow you to audition cartridges or allow you to bring in your integrated amplifier to see if sounds okay with particular cartridges the dealer has to offer? 

I would hate to hazard a guess as to which cartridges might be compatible, not only with your integrated, but with the rest of your system and your particular taste.  The 100 ohm fixed load suggests a cartridge with a low impedance of the coils in the cartridge itself-at most an impedance of 10 ohms, and much lower would be better still. 

Most low/medium output cartridges with a typical 0.4mv - 0.6mV output and ~ 5 - 10 ohms coils should work well with that Luxman MC phono. The carts like the SS Zephyr and (I'm guessing) Benz LPS / Ruby / SLR are the outliers that have any trouble. There are a number of MC phono stages that only offer a 100 ohm load, since it's a very typical value in this range. 

@lewm is right, he never advocated a SUT here. I don't think anyone was suggesting that, except OP. I touched on cable requirements for a SUT, but to be clear I definitely wouldn't try to throw a SUT on this thing (the JFET headamp is another deal entirely). 

It was me who pondered that there might be a SUT inside not Lew. I realize that many MC inputs offer a 100Ω option but I found 100Ω as the only option to be a bit odd particularly for something likely to be paired with a 40Ω denon 103.  Add to this that there are many who insist that a MC cartridge should be loaded at 47kΩ and the single 100Ω option seems like a very limiting choice for any active circuit but a perfectly logical one for an internal SUT.

dave