[sdiy] OT: Turnrable pre - converting from moving coil to magnet

[Travis Shire]

Yes, buy a MC cart and leave the preamp as is. MC carts sound way better 
than MM carts. They are spendy, but worth it if your serious about getting 
the most out of the vinyl format. MM preamps are common and cheap. You can 
even build one if you want. I have 2 Denon MC carts that are used for 
critical listening and transferring to CD. Since the stylus is not user 
replaceable, I try to not put many miles on them. I have a box full of 
Shure/Pickering/AT/Stanton/etc. MM carts for everyday use.



>I would *guess* that the input and feedback resistors on each channel need 
>to be changed. MC carts have lower output than MM carts, so MC pres have 
>more gain. I assume there's an impedance difference, too.
>
> Hopefully an expert will chime in, here.
>
> Maybe you should just buy a moving coil cartridge. :-)
>
> John
>
>
> At 04:06 PM 8/17/2009, Gil W. wrote:
>>I wonder if any of you is into Hi-Fi system modifications...
>>
>>I just got a Famco "Nuance" preamp which sounds great with my Quad 405 
>>amp. When I connect my turntanle (Sansui SR-5090 + Shure M44E cart.) I 
>>hear only low frequency, as if there's a low pass on about 500hz.
>>
>>I checked the about the and found that the it was designed for moving coil 
>>input (where there was a similar model which had moving magnet input). So 
>>any suggestion how would I convert the input so it supports moving magnet 
>>? Is this as simple as replacing two resistors ? Or is the entire design 
>>inherently different ?
>>
>>I know it works fine with moving coil input as this is what my friend, who 
>>sold it to me, has in hos system, and it always sounded very good !
>>
>>Thanks !