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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 uberwaltz

uberwaltz's avatar
uberwaltz
13,381 posts
 
I don’t know of any SUTs which provide a bypass function, although perhaps there are some.
The Denon au-320 most definitely has a straight through bypass option as I have told Elliot in previous threads.

I used mine to run a 0.24mv ZYX into input 1 running at the 1;10 setting and input 2 had a regular MM cart running through it on the bypass selection when in use.
Both worked perfectly well to my ears running into a Manley Chinook (amongst other stages) set at 47k and 60db gain.
And by that I mean QUIET!
I liked the flexibility of having two SUT in one AND a bypass option, gave a lot of options re cartridge choices.
Oh and I liked the prices of used AU-320 units!
So the 0.3mv should be perfectly fine at 1;10 into the mx phono.

YMMV
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