Cartridge incompatibility, Soundsmith and Luxman


I have a Soundsmith Zephyr MIMC Star cartridge that sound really amazing, but I just changed to a Luxman L-590AXII and the gain and loading is fixed.

Output/loading for cartridge: 0.4mV, recommended load resistance 470 ohm

Input sensitivity/impedence for the amp: 0.3mV, 100 ohm

 

The gain should be ok, but the load is way off and you can clearly hear it. The highs are rolled off and I need to crank up the volume to be acceptable level.

 

So here's the question... what cartridge would work in this setup? Would love to keep the Soundsmith, but I'm not going to add SUT with additional cables and all that complexity.

128x128audiojan

Showing 7 responses by rauliruegas

The 0.42 cents resistor linked inside >Mouser is good enough for the op unit and for almost any other.

 

The Z foil is a true killer for that Luxman.

 

R

 

The Vishay Z foil is not an industry standard and yes it's the Vishay resistor with the highest quality and it's not the only Z foil in the market. The Charcroft is a Z foil resistor too.

 

R.

This another example of what @mijostyn linked. Is the Westminster phono stage. btw, did you know of its existence?:

 

 

 

R.

 

 

Dear @lewm : " Obviously you know nothing about quality resistors ".

I think that @mijostyn  knows what he was talking about and certainly you don't.

 

The linked Vishay resistors ( at lower than 1 dollar price. ) were and are a world electronics standard ( not only in audio. ) just as Wima is in the whole industry standard for capacitors.

The next link is the 17K+  Reference Phono 3SE by Audio Research and guess what: Vishay Roderstein an Wima:

 

R

 

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.

Dear @audiojan : " need to go down the route of an SUT. "

Well, due to what you have in the Luxman that’s the bad move ( is up to you. ) that degrades the higher the cartridge signal against a " simple " internal modification below Luxman advise. Maybe I have to say SUT is the wrong way to go for the quality level of the cartridge you own, can’t benefit you in anyway but the other way around but as I said: is up to you.

 

" there is no problem to replace the 100 ohm load resistor with a 470 ohm load resistor. Any skilled technician can do that. I would do that way before throwing either baby out with the bathwater.  "

 

R.

Dea @audiojan  :  I think that before you pull the trigger for a different cartridge put in contact with Luxman and ask if exist a posibility that they can change the impedance to 400-500 ohms. You can try and maybe find out the solution.

 

Regards and enjoy the MUSIC NOT DISTORTIONS,

R.