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Which SUT? .... for .3mv/10 ohms MC cartridge into 3mv MM input sensitivity

Please help me choose a SUT for my 1st MC cartridge.

Now I have more than enough volume using my existing MM cartridges thru my mx110z MM Phono input which says sensitivity 3mv/47k ohms impedance.

AT440ml is 3mv.
Shure 97xe is 4mv
Shure V15VxMR is 5mv
Grado ME+ Mono is 5mv.

coming tomorrow: AT33PTG/2 MC .3mv/10 ohm coil impedance/dc resistance

..................

signal boost, am I getting it right?

1. Is 3mv a MINIMUM strength for the mx110z input?

2. .3mv x 10 = 3mv (+20db correct?) (minimum boost therefore x10/+20db)?

3, if correct, is .3 x 20 = 6mv equiv to +40db?

4. if so, a SUT providing +40db is more than enough for the .3mv and any likely future MC?
.........................

impedance/loading: I am not getting it.

I read about a general rule: coil impedance x 10 for ____?
A33PTG/2: 10 ohm coil x 10 = 100 ohm

too high impedance sounds thin? bright?
too low impedance sounds dull?

(how?) (minimum?) (where?)
......................................................

Thanks as always, and this time I will definitely wait for advice before getting anything. I am not in a hurry for this, Bill will loan me one of his SUT’s until I get my own.

Elliott


elliottbnewcombjr

Showing 1 response by billwojo

billwojo
397 posts
 
I use the Denon AU-320 SUT with my Denon DL-103 cartridge that specs a 0.3mv output voltage. It's set at 1:10 step up ratio and works fine into my Audio Research SP8.
When using a SUT a bit of experimentation and other folks results is quite useful as a guide. Most folks settle on a 1:10 ratio for the DL-103. Seems to work quite well.
The AU-320 has two ratios, 1:10 and 1:36 with primary impedance of 40ohms and 3 ohms.When I get to Elliotts we can try both ratios but I suspect the 1:10 will work quite well. Simple flick of a switch. I would research and see what folks with that cartridge have settled on. It's the best place to start.
BillWojo
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