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Phono Preamp Gain

Hi all,

I am in the process of getting a new cartridge and I want to make sure the output voltage is a good fit for my system. First off here's what I'm working with:

VPI Prime
Schiit Mani (30dB, 42dB, 48dB, 59dB gain options)
Prima Luna Dialogue Premium Integrated (239mV input sensitivity using KT88 tubes) (S/N ratio 81)
JBL L100

My question is what do I use for Vout in this equation to calculate the correct gain to choose on the Schiit Mani phono preamp??


20log(Vout/Vin)


Using the input sensitivity of the integrated and the output voltage of the  Soundsmith Otello ES Moving Iron Cartridge I get 

20log(.239V/.00212V) = 41dB gain

Is this correct?
My main issue is I dont know if my assumption to use .239V is correct.

Cheers



nmo25

Showing 1 response by stevecham

stevecham
3,340 posts
 
I too have a Mani and for cartridges with 4-5 mV of output, which mine are, the 42 dB setting is ideal. I tried the 48 dB setting and the soundstage collapsed and was far more compressed. Can’t hurt to try it though and see if you get the same result.

The Soundsmith Otello has an output of 2.12 mV.

Go with 42 dB.
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