With 3.5mV output you should not need more than 43dB in any case. Many MM preamps have 37dB for 5mV carts as standard. 40dB for 3.5mV equals them. The Itch has at least 43dB on healthy tubes. Either the V15 has gone weak (usually its rubber suspension) or it needs more load capacitance to liven up or you need gain elsewhere in the system's chain.Salas it's normal more gain using the SHURE V15 type III or have I to look for the need of more gain in other place?
Salas also coud be an incorrect 47K loading?
LC resonant tank. Ignoring the effects of the resistances, the resonant frequency is given by:
Inductance: 500 mH, Capacitance: 332 pF, Frequency = 12.4 kHz
Load resistor = √L/C
5000000000000 ÷ 332 = 15.060.240.963,85542
√( √( 15060240963,85542 ) ) = 38.807,52628531664
So 38.8K load resistor in place of 47K?
LC resonant tank. Ignoring the effects of the resistances, the resonant frequency is given by:
Inductance: 500 mH, Capacitance: 332 pF, Frequency = 12.4 kHz
Load resistor = √L/C
5000000000000 ÷ 332 = 15.060.240.963,85542
√( √( 15060240963,85542 ) ) = 38.807,52628531664
So 38.8K load resistor in place of 47K?
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What do you think the calculated value get from Hagerman Hagerman Technology LLC: Cartridge Loading?
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